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Nanostructured Materials For Solar Energy Conversion

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Nanostructured Materials for Solar Energy Conversion

Nanostructured Materials for Solar Energy Conversion Book
Author : Tetsuo Soga
Publisher : Elsevier
Release : 2006-12-14
ISBN : 9780080468303
Language : En, Es, Fr & De

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Book Description :

Nanostructured Materials for Solar Energy Conversion covers a wide variety of materials and device types from inorganic materials to organic materials. This book deals with basic semiconductor physics, modelling of nanostructured solar cell, nanostructure of conventional solar cells such as silicon, CIS and CdTe, dye-sensitized solar cell, organic solar cell, photosynthetic materials, fullerene, extremely thin absorber (ETA) solar cell, quantum structured solar cell, intermediate band solar cell, carbon nanotube, etc. including basic principle and the latest results. There are many books written on conventional p-n junction solar cells, but few books focus on new concepts in this area. * Focuses on the use of nanostructured materials for solar energy * Looks at a wide variety of materials and device types * Covers both organic and inorganic materials

Nanostructured Materials for Next Generation Energy Storage and Conversion

Nanostructured Materials for Next Generation Energy Storage and Conversion Book
Author : Tulay Aygan Atesin,Sajid Bashir,Jingbo Louise Liu
Publisher : Springer Nature
Release : 2019-11-15
ISBN : 366259594X
Language : En, Es, Fr & De

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Book Description :

Nanostructured Materials for Next-Generation Energy Storage and Conversion: Photovoltaic and Solar Energy, is volume 4 of a 4-volume series on sustainable energy. Photovoltaic and Solar Energy while being a comprehensive reference work, is written with minimal jargon related to various aspects of solar energy and energy policies. It is authored by leading experts in the field, and lays out theory, practice, and simulation studies related to solar energy and allied applications including policy, economic and technological challenges. Topics covered include: introduction to solar energy, fundamentals of solar radiation, heat transfer, thermal collection and conversion, solar economy, heating, cooling, dehumidification systems, power and process heat, solar power conversion, policy and applications pertinent to solar energy as viable alternatives to fossil fuels. The aim of the book is to present all the information necessary for the design and analysis of solar energy systems for engineers, material scientists, economics, policy analysts, graduate students, senior undergraduates, solar energy practitioner, as well as policy or lawmakers in the field of energy policy, international energy trade, and libraries which house technical handbooks related to energy, energy policy and applications.

Nanostructured Materials for Solar Energy Conversion

Nanostructured Materials for Solar Energy Conversion Book
Author : Son Thanh Hoang
Publisher : Unknown
Release : 2013
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

The energy requirements of our planet will continue to grow with increasing world population and the modernization of currently underdeveloped countries. This will force us to search for environmental friendly alternative energy resources. Solar energy by far provides the largest of all renewable energy resources with an average power of 120 000 TW irradiated from the sun which can be exploited through solar electricity, solar fuel, and biomass. Nanostructured materials have been the subject of extensive research as the building block for construction of solar energy conversion devices for the past decades. The nanostructured materials sometimes have peculiar electrical and optical properties that are often shape and size dependent and are not expected in the bulk phase. Recent research has focused on new strategies to control nanostructured morphologies and compositions of semiconductor materials to optimize their solar conversion efficiency. In this dissertation, we discuss the synthesis and characterizations of one dimensional nanostructured TiO2 based materials and their solar energy conversion applications. We have developed a solvothermal synthesis method for growing densely packed, vertical, single crystalline TiO2 rutile nanowire arrays with unprecedented small feature sizes of 5 nm and lengths up to 4.4 [mu]m. Because of TiO2's large band gap, the working spectrum of TiO2 is limited to the ultra violet region with photons shorter than 420 nm. We demonstrate that the active spectrum of TiO2 can be shifted to ~ 520 nm with incorporation of N via nitridation of TiO2 nanowires in NH3 flow. In addition, we demonstrate a synergistic effect involving hydrogenation and nitridation cotreatment of TiO2 nanowires that further redshift the active spectrum of TiO2 to 570 nm. The Ta and N co-incorporated TiO2 nanowires were also prepared and showed significant enhancement in photoelectrochemical performance compared to mono-incorporation of Ta or N. This enhancement is due to fewer recombination centers from charge compensation effects and suppression of the formation of an amorphous layer on the nanowires during the nitridation process. Finally, we have developed hydrothermal synthesis of single crystalline TiO2 nanoplatelet arrays on virtually all substrates and demonstrated their applications in water photo-oxidation and dye sensitized solar cells.

Nanostructured Composite Materials for Solar Energy Conversion

Nanostructured Composite Materials for Solar Energy Conversion Book
Author : Anonim
Publisher : Unknown
Release : 2015
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Nanostructured Composite Materials for Solar Energy Conversion book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Nanoenergy

Nanoenergy Book
Author : Flavio Leandro de Souza,Edson Roberto Leite
Publisher : Springer Science & Business Media
Release : 2012-08-30
ISBN : 3642317367
Language : En, Es, Fr & De

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Book Description :

Low dimensional systems have revolutionized the science and technology in several areas. However, their understanding is still a great challenge for the scientific community. Solar energy conversion devices based on nanostructured materials have shown exceptional gains in efficiency and stability. In this context, nanostructures allow an improvement of surface properties, transport and charge transfer, as well as direct application as sensors and storage devices and energy conversion. This book discuss the recent advances and future trends of the nanoscience in solar energy conversion and storage. It explores and discusses recent developments both in theory as well as in experimental studies and is of interest to materials scientists, chemists, physicists and engineers.

Nanomaterials for Solar Cell Applications

Nanomaterials for Solar Cell Applications Book
Author : Sabu Thomas,El Hadji Mamour Sakho,Nandakumar Kalarikkal,Oluwatobi Samuel Oluwafemi,Jihuai Wu
Publisher : Elsevier
Release : 2019-06-12
ISBN : 0128133384
Language : En, Es, Fr & De

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Book Description :

Nanomaterials for Solar Cell Applications provides a review of recent developments in the field of nanomaterials based solar cells. It begins with a discussion of the fundamentals of nanomaterials for solar calls, including a discussion of lifecycle assessments and characterization techniques. Next, it reviews various types of solar cells, i.e., Thin film, Metal-oxide, Nanowire, Nanorod and Nanoporous materials, and more. Other topics covered include a review of quantum dot sensitized and perovskite and polymer nanocomposites-based solar cells. This book is an ideal resource for those working in this evolving field of nanomaterials and renewable energy. Provides a well-organized approach to the use of nanomaterials for solar cell applications Discusses the synthesis, characterization and applications of traditional and new material Includes coverage of emerging nanomaterials, such as graphene, graphene-derivatives and perovskites

Nanostructured Materials for Photocatalysis Water Treatment and Solar Desalination

Nanostructured Materials for Photocatalysis  Water Treatment and Solar Desalination Book
Author : Hiran D. Kiriarachchi
Publisher : Unknown
Release : 2019
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Maintaining a constant supply of clean drinking water is among the most pressing global challenges in our time. About one-third of the population is affected by the water scarcity and it can only get worse with climate change, rapid industrialization, and the population growth. Even though nearly 70 percent of the planet is covered by water, the consumable freshwater content is only 2.5 percent of it. Unfortunately, the accessible portion of it is only 1 percent. Even so, most of the freshwater bodies are choked with pollution. Considering the vast availability of saline water on the planet and the increasing wastewater generation, seawater desalination, and wastewater treatment and recycling seem to have the potential to address current water-related issues. Therefore, it is necessary to find efficient techniques for seawater desalination and wastewater treatment. The use of nanostructured materials for these applications is becoming a popular approach due to the unique chemical and physical properties they possess compared to bulk materials Solar energy is the cleanest and most abundant renewable natural resource available. Materials for solar photothermal energy conversion are highly sought after for their cost savings, clean environment, and broad utility in providing water heating and/or steam for many applications including domestic water heating and solar-driven desalination. Extensive research efforts have been made to develop efficient solar absorbers with characteristics such as low weight, low thermal conductivity, broad solar absorption and porosity to be able to float on water to provide more efficient and cost-effective solar steam generation systems. Metal NPs have been proposed to take advantage of the high efficiency of the photothermal energy conversion associated with surface plasmon resonance absorption. Nanostructured carbon-based materials such as graphene oxide, carbon nanotubes, carbonized biomass are also in use due to their excellent photothermal energy conversion ability over the range of the visible and near infra-red region of the electromagnetic spectrum. In this dissertation, five projects based on the utility of nanostructured materials for desalination, photocatalysis and water treatment will be discussed. The first three projects involve the fabrication and design of plasmonic and carbon-based photothermal materials for applications in solar steam generation, water desalination, and wastewater treatment. In the fourth project, a unique shape of ZnO nanostructure was synthesized for photodegradation of organic dyes in industrial wastewater. The final project demonstrates the shape-controlled synthesis of iron carbide nanostructures and composite materials of aminated graphene oxide for the removal of Cr(VI) from wastewater.

Synthesis Assembly and Characterization of Hybrid organic inorganic Nanostructured Materials for Solar Energy Conversion Devices

Synthesis  Assembly and Characterization of Hybrid  organic inorganic  Nanostructured Materials for Solar Energy Conversion Devices Book
Author : Andrés Ruland Palaia
Publisher : Unknown
Release : 2013
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Synthesis Assembly and Characterization of Hybrid organic inorganic Nanostructured Materials for Solar Energy Conversion Devices book written by Andrés Ruland Palaia, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

The Physics of Solar Energy Conversion

The Physics of Solar Energy Conversion Book
Author : Juan Bisquert
Publisher : CRC Press
Release : 2020-06-09
ISBN : 0429000146
Language : En, Es, Fr & De

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Book Description :

Research on advanced energy conversion devices such as solar cells has intensified in the last two decades. A broad landscape of candidate materials and devices were discovered and systematically studied for effective solar energy conversion and utilization. New concepts have emerged forming a rather powerful picture embracing the mechanisms and limitation to efficiencies of different types of devices. The Physics of Solar Energy Conversion introduces the main physico-chemical principles that govern the operation of energy devices for energy conversion and storage, with a detailed view of the principles of solar energy conversion using advanced materials. Key Features include: Highlights recent rapid advances with the discovery of perovskite solar cells and their development. Analyzes the properties of organic solar cells, lithium ion batteries, light emitting diodes and the semiconductor materials for hydrogen production by water splitting. Embraces concepts from nanostructured and highly disordered materials to lead halide perovskite solar cells Takes a broad perspective and comprehensively addresses the fundamentals so that the reader can apply these and assess future developments and technologies in the field. Introduces basic techniques and methods for understanding the materials and interfaces that compose operative energy devices such as solar cells and solar fuel converters.

Surface Enhanced Nanostructured Electrode Materials for Solar Energy Harvesting and Conversion

Surface Enhanced Nanostructured Electrode Materials for Solar Energy Harvesting and Conversion Book
Author : Zhichao Shan
Publisher : Unknown
Release : 2016
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

This dissertation presents surface enhanced photoanodes and oxygen evolution reaction (OER) catalysts for solar water splitting to produce hydrogen. The enhancement could be achieved by either introduced surface plasmon enhanced metallic nanostructures, such as Au or Ag nanoparticles, or adjusted surface structure, chemical composition and band structure of TiO2. This dissertation also presents various electrochemical and spectroscopic techniques used to characterize nanostructured materials for solar water splitting reactions. Firstly, a model photoanode comprised of [email protected] core-shell nanoparticles (NPs) on a nanostructured TiO2 substrate is presented for visible light sensitive photoelectrochemical properties. The nanostructured electrode is coated with TiO2 nanowires (NW) on Ti plate to provide a high surface area for efficient light absorption and efficient charge collection from [email protected] NPs. Pronounced photoelectrochemical responses of [email protected] NPs under visible light responses were obtained. These responses were attributed to collective contributions of local surface plasmon enhancement, enhanced charge collection by [email protected] NWs, and high surface area of the nanostructured electrode system. The shell thickness and core size of the [email protected] core-shell structure can be controlled and the optimal photoelectrochemical performance with a core size of 17 nm (in diameter) and shell thickness of 8 nm was formed. Secondly, a [email protected]/[email protected] nanostructured photoanode was prepared by decorating a CdS thin film layer onto a Au/[email protected] NWs substrate. Compared to CdS/[email protected] NWs photoanode, [email protected]/[email protected] exhibits a significant enhancement to water splitting efficiency. iii The enhanced photoelectrochemical catalytic activity is attributed to the surface plasmon enhancement of Au nanoparticles. XPS, XRD, SEM, EDS, high resolution TEM, AC impedance and other electrochemical methods were applied to resolve the structure-function relationship of the nanostructures of [email protected]/[email protected] NWs and [email protected]/[email protected] NWs electrodes. The studies of the photocatalytic activity of the core-shell structure, as well as a core-shell structure predictive model can further improve the understanding of the interplay between the shell thickness and core size and guide the design of highly efficient core-shell materials. Lastly, chapter 5 of this dissertation presents a high efficiency, durable, and low-cost oxygen evolution reaction (OER) catalyst based on earth-abundant elements, carbon, oxygen, and titanium for renewable energy conversion and storage devices. In this study, we report a highly active nanostructured electrode NanoCOT (C, O and Ti) for an efficient OER in alkaline solution. The NanoCOT electrode is synthesized from the carbon transformation of nanostructured TiO2 in an atmosphere of methane, hydrogen and nitrogen by a CVD process. The NanoCOT exhibits highly enhanced OER catalytic activity in alkaline solution, providing a current density of 1.33 mA/cm2 at an overpotential of 0.42 V, which is about 4 times higher than an IrO2 electrode and 15 times higher than a Pt electrode because of its nanostructured high surface area and favorable OER kinetics. The enhanced OER catalytic activity of NanoCOT is attributed to the presence of a continuous energy band of the titanium oxide electrode with predominantly reduced defect states of Ti (e.g., Ti1+, Ti2+ and Ti3+) formed by chemical reduction with hydrogen and carbon. OER performance of NanoCOT can also be further enhanced by decreasing its overpotential 150 mV at a current density of 1.0 mA/cm2 after coating its surface electrophoretically with 2.0 nm IrOx nanoparticles (NPs).

Sustainable Material Solutions for Solar Energy Technologies

Sustainable Material Solutions for Solar Energy Technologies Book
Author : Mariana Amorim Fraga,Delaina Amos,Savas Sonmezoglu,Velumani Subramaniam
Publisher : Elsevier
Release : 2021-08-18
ISBN : 0128215933
Language : En, Es, Fr & De

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Book Description :

Sustainable Material Solutions for Solar Energy Technologies: Processing Techniques and Applications provides an overview of challenges that must be addressed to efficiently utilize solar energy. The book explores novel materials and device architectures that have been developed to optimize energy conversion efficiencies and minimize environmental impacts. Advances in technologies for harnessing solar energy are extensively discussed, with topics including materials processing, device fabrication, sustainability of materials and manufacturing, and current state-of-the-art. Leading international experts discuss the applications, challenges, and future prospects of research in this increasingly vital field, providing a valuable resource for students and researchers working in this field. Explores the fundamentals of sustainable materials for solar energy applications, with in-depth discussions of the most promising material solutions for solar energy technologies: photocatalysis, photovoltaic, hydrogen production, harvesting and storage Discusses the environmental challenges to be overcome and importance of efficient materials utilization for clean energy Looks at design materials processing and optimization of device fabrication via metrics such as power-to-weight ratio, effectiveness at EOL compared to BOL, and life-cycle analysis

Nanostructured Functional and Flexible Materials for Energy Conversion and Storage Systems

Nanostructured  Functional  and Flexible Materials for Energy Conversion and Storage Systems Book
Author : Alagarsamy Pandikumar,Perumal Rameshkumar
Publisher : Unknown
Release : 2020-07
ISBN : 0128195525
Language : En, Es, Fr & De

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Book Description :

Nanostructured, Functional, and Flexible Materials for Energy Conversion and Storage Systems gathers and reviews developments within the field of nanostructured functional materials towards energy conversion and storage. Contributions from leading research groups involved in interdisciplinary research in the fields of chemistry, physics and materials science and engineering are presented. Chapters dealing with the development of nanostructured materials for energy conversion processes, including oxygen reduction, methanol oxidation, oxygen evolution, hydrogen evolution, formic acid oxidation and solar cells are discussed. The work concludes with a look at the application of nanostructured functional materials in energy storage system, such as supercapacitors and batteries. With its distinguished international team of expert contributors, this book will be an indispensable tool for anyone involved in the field of energy conversion and storage, including materials engineers, scientists and academics.

The Physics of Solar Energy Conversion

The Physics of Solar Energy Conversion Book
Author : Juan Bisquert
Publisher : CRC Press
Release : 2020-06-09
ISBN : 0429000154
Language : En, Es, Fr & De

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Book Description :

Research on advanced energy conversion devices such as solar cells has intensified in the last two decades. A broad landscape of candidate materials and devices were discovered and systematically studied for effective solar energy conversion and utilization. New concepts have emerged forming a rather powerful picture embracing the mechanisms and limitation to efficiencies of different types of devices. The Physics of Solar Energy Conversion introduces the main physico-chemical principles that govern the operation of energy devices for energy conversion and storage, with a detailed view of the principles of solar energy conversion using advanced materials. Key Features include: Highlights recent rapid advances with the discovery of perovskite solar cells and their development. Analyzes the properties of organic solar cells, lithium ion batteries, light emitting diodes and the semiconductor materials for hydrogen production by water splitting. Embraces concepts from nanostructured and highly disordered materials to lead halide perovskite solar cells Takes a broad perspective and comprehensively addresses the fundamentals so that the reader can apply these and assess future developments and technologies in the field. Introduces basic techniques and methods for understanding the materials and interfaces that compose operative energy devices such as solar cells and solar fuel converters.

Tuning Energy Transport in Solar Thermal Systems Using Nanostructured Materials

Tuning Energy Transport in Solar Thermal Systems Using Nanostructured Materials Book
Author : Andrej Lenert,Massachusetts Institute of Technology. Department of Mechanical Engineering
Publisher : Unknown
Release : 2014
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Solar thermal energy conversion can harness the entire solar spectrum and theoretically achieve very high efficiencies while interfacing with thermal storage or back-up systems for dispatchable power generation. Nanostructured materials allow us to tune the spectral properties and heat transfer behavior to enable such systems. However, under high temperature conditions, thermal management, system optimization and minimization of parasitic losses are necessary to achieve competitive solar power generation. This thesis seeks to achieve spectral control and thermal management through manipulation of nanostructured materials. First, this thesis presents the design and development of a nanophotonic solar thermophotovoltaic (STPV) that harnesses the full spectrum of the sun, in a solid-state and scalable way. Through device optimization and control over spectral properties at high temperatures (~1300 K), a device that is 3 times more efficient than previous STPVs is demonstrated. To achieve this result, a framework was developed to identify which parts of the spectrum are critical and to guide the design of nanostructured absorbers and emitters for STPVs. The work elucidated the relative importance of spectral properties depending on the operating regime and device geometry. Carbon nanotubes and a silicon/silicon dioxide photonic crystal were used to target critical properties in the high solar concentration regime; and two-dimensional metallic photonic crystals were used to target critical properties in the low solar concentration regime. A versatile experimental platform was developed to interchangeably test different STPV components without sacrificing experimental control. In addition to demonstrating significant improvements in STPV efficiency, an experimental procedure to quantify the energy conversion and loss mechanisms helped improve and validate STPV models. Using these validated models, this thesis presents a scaled-up device that can achieve 20% efficiencies in the near term. With potential integration of thermal-based storage, such a technology can supply power efficiently and on-demand, which will have significant implications for adoption of STPVs. Second, the thesis shifts focus away from solid-state systems to thermal-fluid systems. A new figure of merit was proposed to capture the thermal storage, heat transfer and pumping power requirements for a heat transfer fluid is a solar thermal system. Existing and emerging fluids were evaluated based on the new metric as well as practical issues. Finally, sub-micron phase change material (PCM) suspensions are investigated for simultaneous enhancement of local heat transfer and thermal storage capacity in solar thermal systems. A physical model was developed to explain the local heat transfer characteristics of a flowing PCM suspension undergoing melting. A mechanism for enhancement of heat transfer through.control over the distribution of PCM particles inside a channel was discovered and explained. Together, this thesis makes significant contributions towards improving our understanding of the role and the effective use of nanostructured materials in solar thermal systems.

Nanostructured Materials for Electrochemical Energy Production and Storage

Nanostructured Materials for Electrochemical Energy Production and Storage Book
Author : Edson Roberto Leite
Publisher : Springer Science & Business Media
Release : 2010-03-20
ISBN : 9780387493237
Language : En, Es, Fr & De

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Book Description :

Here is an authoritative reference from world-renowned research groups for those working in materials science and electrochemistry. The authors describe properties of nanostructured materials that can improve performance in alternative energy devices.

Advanced Nanomaterials and Their Applications in Renewable Energy

Advanced Nanomaterials and Their Applications in Renewable Energy Book
Author : Jingbo Louise Liu,Sajid Bashir
Publisher : Elsevier
Release : 2015-08-06
ISBN : 0128017082
Language : En, Es, Fr & De

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Book Description :

Advanced Nanomaterials and Their Applications in Renewable Energy presents timely topics related to nanomaterials' feasible synthesis and characterization, and their application in the energy fields. In addition, the book provides insights and scientific discoveries in toxicity study, with information that is easily understood by a wide audience. Advanced energy materials are important in designing materials that have greater physical, electronic, and optical properties. This book emphasizes the fundamental physics and chemistry underlying the techniques used to develop solar and fuel cells with high charge densities and energy conversion efficiencies. New analytical techniques (synchronous X-ray) which probe the interactions of particles and radiation with matter are also explored, making this book an invaluable reference for practitioners and those interested in the science. Provides a comprehensive review of solar energy, fuel cells, and gas storage from 2010 to the present Reviews feasible synthesis and modern analytical techniques used in alternative energy Explores examples of research in alternative energy, including current assessments of nanomaterials and safety Contains a glossary of terms, units, and historical benchmarks Presents a useful guide that will bring readers up to speed on historical developments in alternative fuel cells

Advanced Energy Materials

Advanced Energy Materials Book
Author : Ashutosh Tiwari,Sergiy Valyukh
Publisher : John Wiley & Sons
Release : 2014-02-12
ISBN : 1118904842
Language : En, Es, Fr & De

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Book Description :

An essential resource for scientists designing new energymaterials for the vast landscape of solar energy conversion as wellas materials processing and characterization Based on the new and fundamental research on novel energymaterials with tailor-made photonic properties, the role ofmaterials engineering has been to provide much needed support inthe development of photovoltaic devices. Advanced EnergyMaterials offers a unique, state-of-the-art look at the newworld of novel energy materials science, shedding light on thesubject’s vast multi-disciplinary approach The book focuses particularly on photovoltaics, efficient lightsources, fuel cells, energy-saving technologies, energy storagetechnologies, nanostructured materials as well as innovatingmaterials and techniques for future nanoscale electronics. Pathwaysto future development are also discussed. Critical, cutting-edge subjects are addressed, including: Non-imaging focusing heliostat; state-of-the-art ofnanostructures Metal oxide semiconductors and their nanocomposites Superionic solids; polymer nanocomposites; solid electrolytes;advanced electronics Electronic and optical properties of lead sulfide High-electron mobility transistors and light-emittingdiodes Anti-ferroelectric liquid crystals; PEEK membrane for fuelcells Advanced phosphors for energy-efficient lighting Molecular computation photovoltaics and photocatalysts Photovoltaic device technology and non-conventional energyapplications Readership The book is written for a large and broad readership includingresearchers and university graduate students from diversebackgrounds such as chemistry, materials science, physics, andengineering working in the fields of nanotechnology, photovoltaicdevice technology, and non-conventional energy.

NANOSTRUCTURED MATERIALS FOR H

NANOSTRUCTURED MATERIALS FOR H Book
Author : Xiang Liu
Publisher : Open Dissertation Press
Release : 2017-01-26
ISBN : 9781361034804
Language : En, Es, Fr & De

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Book Description :

This dissertation, "Nanostructured Materials for High Performance Energy Storage and Conversion Devices" by Xiang, Liu, 劉翔, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: With the growth of population and changing of the lifestyles, our global energy demands is increasing dramatically. Since the traditional fossil fuel resource is very limited, it is necessary and urgent to pursuit sustainable energy alternatives, including both green energy sources and sustainable energy storage systems. Solar energy is the most promising alternative of clean energy source, since it is clean, abundance and widely available at most places on the earth. Recently, the dye-sensitized solar cell (DSSC) has attracted increasing research interests for its low cost and long lifetime. Moreover, to make the best use of the energy sources, it is needed to develop suitable energy storage system. Lithium ion battery (LIB) has becoming the key technology for energy storage, especially in recent years. It has been widely used in portable devices like smart phones, PCs and wearable electronic devices. More importantly, due to the high energy density of lithium ion battery, it has become the most promising and critical energy storage technologies for electric vehicles (EV) and hybrid electric vehicles (HEV). In both DSSCs and LIBs, metal oxides represent important parts of the devices. This dissertation covers the basic principle as well as the strategies for performance enhancing of both lithium ion batteries and dye-sensitized solar cells. Various TiO2 based anode materials for LIBs were investigated. The morphology and structure would significant affect the lithium storage of TiO2 anode; a simple in situ fabrication procedure was developed to further enhance the capacity of TiO2 nanotube anode. Moreover, in order to develop high energy density materials, SnO2 based anode materials were investigated. Composite materials of tin and copper oxides on CNT matrix as well as Al2O3 stabilized SnO2 hollow sphere with GO wrapped anodes were fabricated and studied. The composite anode is an efficient way to increase the stability of the electrode upon cycling. For the energy conversion, ZnO-based DSSCs were studied. We developed a low temperature (150C) procedures for ZnO-based DSSCs, the low temperature procedure is less energy consuming, and may have the potential usage on future flexible devices. Subjects: Nanostructured materials Metallic oxides Lithium ion batteries - Materials Solar cells - Materials

The Physics of Solar Cells

The Physics of Solar Cells Book
Author : Juan Bisquert
Publisher : CRC Press
Release : 2017-11-15
ISBN : 1351395572
Language : En, Es, Fr & De

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Book Description :

The book provides an explanation of the operation of photovoltaic devices from a broad perspective that embraces a variety of materials concepts, from nanostructured and highly disordered organic materials, to highly efficient devices such as the lead halide perovskite solar cells. The book establishes from the beginning a simple but very rich model of a solar cell, in order to develop and understand step by step the photovoltaic operation according to fundamental physical properties and constraints. It emphasizes the aspects pertaining to the functioning of a solar cell and the determination of limiting efficiencies of energy conversion. The final chapters of the book establish a more refined and realistic treatment of the many factors that determine the actual performance of experimental devices: transport gradients, interfacial recombination, optical losses and so forth. The book finishes with a short review of additional important aspects of solar energy conversion, such as the photonic aspects of spectral modification, and the direct conversion of solar photons to chemical fuel via electrochemical reactions.

Nanostructured Materials

Nanostructured Materials Book
Author : Gerhard Wilde
Publisher : Elsevier
Release : 2009-12-01
ISBN : 9780080914237
Language : En, Es, Fr & De

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Book Description :

This book focuses on functional aspects of nanostructured materials that have a high relevance to immediate applications, such as catalysis, energy harvesting, energy storage, optical properties and surface functionalization via self-assembly. Additionally, there are chapters devoted to massive nanostructured materials and composites and covering basic properties and requirements of this new class of engineering materials. Especially the issues concerning stability, reliability and mechanical performance are mandatory aspects that need to be regarded carefully for any nanostructured engineering material.