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Nanostructured Semiconductors

Nanostructured Semiconductors Book
Author : Petra Granitzer,Klemens Rumpf
Publisher : CRC Press
Release : 2014-03-11
ISBN : 9814411108
Language : En, Es, Fr & De

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Book Description :

This book focuses on nanostructured semiconductors, their fabrication, and their application in various fields such as optics, acoustics, and biomedicine. It presents a compendium of recent developments in nanostructured and hybrid materials and also contains a collection of principles and approaches related to nano-size semiconductors. The text summarizes the recent work by renowned scientists, emphasizing the synthesis by self-assembly or prestructuring and characterization methods of such nanosize materials and also discusses the potential applications of nanostructured semiconductors and hybrid systems. The book also gives adequate coverage to the novel properties of nanostructured and low-dimensional materials.

Nanostructured Semiconductors

Nanostructured Semiconductors Book
Author : Serge Zhuiykov
Publisher : Woodhead Publishing
Release : 2018-01-02
ISBN : 0081019203
Language : En, Es, Fr & De

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Book Description :

Nanostructured Semiconductors focuses on the development of semiconductor nanocrystals, their technologies and applications, including energy harvesting, solar cells, solid oxide fuel cells, and chemical sensors. Semiconductor oxides are used in electronics, optics, catalysts, sensors, and other functional devices. In their 2D form, the reduction in size confers exceptional properties, useful for creating faster electronics and more efficient catalysts. Since the first edition of the book, there has been significant progress in the development of new functional nanomaterials with unique and sometimes unpredictable quantum-confined properties within the class what it called two-dimensional (2D) semiconductors. These nanocrystals represent extremely thin nano-structures with thickness of just few nano-meters. Since that time, not only were 2D semiconductor oxides further developed, more importantly, 2D metal dichalcogenides, such as MoS2, MoSe2, WS2, WSe2 and others also progressed significantly in their development demonstrating their superior properties compared to their bulk and microstructural counterparts. The book has been expanded to include these advancements. The book begins with the structure and properties of semiconductor nanocrystals (chapter 1), addresses electronic device applications (chapter 2), discusses 2-Dimensional oxides and dichalcogenide semiconductors (chapters 3 through 5), and ends with energy, environment, and bio applications (chapters 6 through 8). Focuses on the development of semiconductor nanocrystals and their technologies and applications, including energy harvesting, solar cells, solid oxide fuel cells and chemical sensors Include other 2D materials, such as dichalcogenides to present a comprehensive resource on the latest advancements in nanostructured semiconductors Reviews the fundamental physics of conductivity and electron arrangement before proceeding to practical applications Contains a unique chapter dedicated to the new atomic layer deposition (ALD) technique which has the ability to develop 2D nanostructures with great precision

Nanostructured Semiconductors

Nanostructured Semiconductors Book
Author : Konstantinos Termentzidis
Publisher : CRC Press
Release : 2017-09-01
ISBN : 9814745650
Language : En, Es, Fr & De

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Book Description :

The book is devoted to nanostructures and nanostructured materials containing both amorphous and crystalline phases with a particular focus on their thermal properties. It is the first time that theoreticians and experimentalists from different domains gathered to treat this subject. It contains two distinct parts; the first combines theory and simulations methods with specific examples, while the second part discusses methods to fabricate nanomaterials with crystalline and amorphous phases and experimental techniques to measure the thermal conductivity of such materials. Physical insights are given in the first part of the book, related with the existing theoretical models and the state of art simulations methods (molecular dynamics, ab-initio simulations, kinetic theory of gases). In the second part, engineering advances in the nanofabrication of crystalline/amorphous heterostructures (heavy ion irradiation, electrochemical etching, aging/recrystallization, ball milling, PVD, laser crystallization and magnetron sputtering) and adequate experimental measurement methods are analyzed (Scanning Thermal Microscopy, Raman, thermal wave methods and x-rays neutrons spectroscopy).

Chemical Physics of Nanostructured Semiconductors

Chemical Physics of Nanostructured Semiconductors Book
Author : Alexander I. Kokorin,Detlef Bahnemann
Publisher : CRC Press
Release : 2003-07-31
ISBN : 1498708633
Language : En, Es, Fr & De

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Book Description :

Deep and detailed discussions on chemistry, chemical physics, photoelectrochemistry, photophysics, photocatalysis and possible applications of nanostructured semiconductor materials have shown increasing interest in the matter by scientists representing various research areas as well as industrial enterprises. Indeed, solar energy conversion and ch

Nanostructured Semiconductors in Porous Alumina Matrices

Nanostructured Semiconductors in Porous Alumina Matrices Book
Author : Rishat G. Valeev,Alexander V. Vakhrushev,Aleksey Yu. Fedotov,Dmitrii I. Petukhov
Publisher : CRC Press
Release : 2019-09-10
ISBN : 0429675224
Language : En, Es, Fr & De

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Book Description :

This book, Nanostructured Semiconductors in Porous Alumina Matrices: Modeling, Synthesis, and Properties, explores new developments in the modeling, synthesis, and properties of functional semiconductor nanostructures in porous anodic alumina matrices. The book focuses on luminescent nanoparticles in organic and inorganic dielectric matrixes, specifically in porous alumina films, as these are most relevant due to their capacity for particle division and ability to provide environmental protection. With a particular emphasis on experimental and theoretical studies of the synthesis processes, the book informs readers about these nanostructures through rigorous investigation of their properties. The book, which is divided into ten chapters, begins with a discussion of the existing literature on nanostructural electroluminescent light sources (ELS). This overview establishes a foundation for the remaining nine chapters, which explore in depth many facets of nanostructured materials: their composition, processes they undergo, how they may be implemented, etc. Within these chapters, experimental studies and results are incorporated, in addition to detailed descriptions of simulations that highlight different uses of these materials.

Nanostructured Semiconductor Oxides for the Next Generation of Electronics and Functional Devices

Nanostructured Semiconductor Oxides for the Next Generation of Electronics and Functional Devices Book
Author : Serge Zhuiykov
Publisher : Woodhead Publishing
Release : 2014-02-14
ISBN : 1782422242
Language : En, Es, Fr & De

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Book Description :

Nanostructured Semiconductor Oxides for the Next Generation of Electronics and Functional Devices focuses on the development of semiconductor nanocrystals, their technologies and applications, including energy harvesting, solar cells, solid oxide fuel cells, and chemical sensors. Semiconductor oxides are used in electronics, optics, catalysts, sensors, and other functional devices. In their 2D form, the reduction in size confers exceptional properties, useful for creating faster electronics and more efficient catalysts. After explaining the physics affecting the conductivity and electron arrangement of nanostructured semiconductors, the book addresses the structural and chemical modification of semiconductor nanocrystals during material growth. It then covers their use in nanoscale functional devices, particularly in electronic devices and carbon nanotubes. It explores the impact of 2D nanocrystals, such as graphene, chalcogenides, and oxide nanostructures, on research and technology, leading to a discussion of incorporating graphene and semiconductor nanostructures into composites for use in energy storage. The final three chapters focus on the applications of these functional materials in photovoltaic cells, solid oxide fuel cells, and in environmental sensors including pH, dissolved oxygen, dissolved organic carbon, and dissolved metal ion sensors. Nanostructured Semiconductor Oxides for the Next Generation of Electronics and Functional Devices is a crucial resource for scientists, applied researchers, and production engineers working in the fabrication, design, testing, characterization, and analysis of new semiconductor materials. This book is a valuable reference for those working in the analysis and characterization of new nanomaterials, and for those who develop technologies for practical devices fabrication. Focuses on the development of semiconductor nanocrystals, their technologies and applications, including energy harvesting, solar cells, solid oxide fuel cells, and chemical sensors Reviews fundamental physics of conductivity and electron arrangement before proceeding to practical applications A vital resource for applied researchers and production engineers working with new semiconductor materials

Photon Absorption Models in Nanostructured Semiconductor Solar Cells and Devices

Photon Absorption Models in Nanostructured Semiconductor Solar Cells and Devices Book
Author : Antonio Luque,Alexander Virgil Mellor
Publisher : Springer
Release : 2015-02-12
ISBN : 331914538X
Language : En, Es, Fr & De

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Book Description :

This book is intended to be used by materials and device physicists and also solar cells researchers. It models the performance characteristics of nanostructured solar cells and resolves the dynamics of transitions between several levels of these devices. An outstanding insight into the physical behaviour of these devices is provided, which complements experimental work. This therefore allows a better understanding of the results, enabling the development of new experiments and optimization of new devices. It is intended to be accessible to researchers, but also to provide engineering tools which are often only accessible to quantum physicists. Photon Absorption Models in Nanostructured Semiconductor Solar Cells and Devices is intended to provide an easy-to-handle means to calculate the light absorption in nanostructures, the final goal being the ability to model operational behaviour of nanostructured solar cells. It allows researchers to design new experiments and improve solar cell performances, and offers a means for the easy approximate calculation of the energy spectrum and photon absorption coefficients of nanostructures. This calculation is based on the effective mass model and uses a new Hamiltonian called the Empirical kp Hamiltonian, which is based on a four band kp model.

Nanostructured Semiconductors

Nanostructured Semiconductors Book
Author : Konstantinos Termentzidis
Publisher : CRC Press
Release : 2017-09-01
ISBN : 131534078X
Language : En, Es, Fr & De

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Book Description :

The book is devoted to nanostructures and nanostructured materials containing both amorphous and crystalline phases with a particular focus on their thermal properties. It is the first time that theoreticians and experimentalists from different domains gathered to treat this subject. It contains two distinct parts; the first combines theory and simulations methods with specific examples, while the second part discusses methods to fabricate nanomaterials with crystalline and amorphous phases and experimental techniques to measure the thermal conductivity of such materials. Physical insights are given in the first part of the book, related with the existing theoretical models and the state of art simulations methods (molecular dynamics, ab-initio simulations, kinetic theory of gases). In the second part, engineering advances in the nanofabrication of crystalline/amorphous heterostructures (heavy ion irradiation, electrochemical etching, aging/recrystallization, ball milling, PVD, laser crystallization and magnetron sputtering) and adequate experimental measurement methods are analyzed (Scanning Thermal Microscopy, Raman, thermal wave methods and x-rays neutrons spectroscopy).

Nanostructured Semiconductors in Porous Alumina Matrices

Nanostructured Semiconductors in Porous Alumina Matrices Book
Author : Rishat G. Valeev,Alexander V. Vakhrushev,Aleksey Yu. Fedotov,Dmitrii I. Petukhov
Publisher : CRC Press
Release : 2019-08-20
ISBN : 0429675232
Language : En, Es, Fr & De

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Book Description :

This book, Nanostructured Semiconductors in Porous Alumina Matrices: Modeling, Synthesis, and Properties, explores new developments in the modeling, synthesis, and properties of functional semiconductor nanostructures in porous anodic alumina matrices. The book focuses on luminescent nanoparticles in organic and inorganic dielectric matrixes, specifically in porous alumina films, as these are most relevant due to their capacity for particle division and ability to provide environmental protection. With a particular emphasis on experimental and theoretical studies of the synthesis processes, the book informs readers about these nanostructures through rigorous investigation of their properties. The book, which is divided into ten chapters, begins with a discussion of the existing literature on nanostructural electroluminescent light sources (ELS). This overview establishes a foundation for the remaining nine chapters, which explore in depth many facets of nanostructured materials: their composition, processes they undergo, how they may be implemented, etc. Within these chapters, experimental studies and results are incorporated, in addition to detailed descriptions of simulations that highlight different uses of these materials.

Nanostructured Zinc Oxide

Nanostructured Zinc Oxide Book
Author : Kamlendra Awasthi
Publisher : Elsevier
Release : 2021-08-10
ISBN : 0128189010
Language : En, Es, Fr & De

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Book Description :

Nanostructured Zinc Oxide covers the various routes for the synthesis of different types of nanostructured zinc oxide including; 1D (nanorods, nanowires etc.), 2D and 3D (nanosheets, nanoparticles, nanospheres etc.). This comprehensive overview provides readers with a clear understanding of the various parameters controlling morphologies. The book also reviews key properties of ZnO including optical, electronic, thermal, piezoelectric and surface properties and techniques in order to tailor key properties. There is a large emphasis in the book on ZnO nanostructures and their role in optoelectronics. ZnO is very interesting and widely investigated material for a number of applications. This book presents up-to-date information about the ZnO nanostructures-based applications such as gas sensing, pH sensing, photocatalysis, antibacterial activity, drug delivery, and electrodes for optoelectronics. Reviews methods to synthesize, tailor, and characterize 1D, 2D, and 3D zinc oxide nanostructured materials Discusses key properties of zinc oxide nanostructured materials including optical, electronic, thermal, piezoelectric, and surface properties Addresses most relevant zinc oxide applications in optoelectronics such as light-emitting diodes, solar cells, and sensors

Nanostructured Materials and Nanotechnology

Nanostructured Materials and Nanotechnology Book
Author : Hari Singh Nalwa
Publisher : Gulf Professional Publishing
Release : 2002
ISBN : 0125139209
Language : En, Es, Fr & De

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Book Description :

Nanotechnology Provides comprehensive coverage of the dominant technology of the 21st century Written by a truly international list of contributors.

Nanostructured Photocatalyst via Defect Engineering

Nanostructured Photocatalyst via Defect Engineering Book
Author : Vitaly Gurylev
Publisher : Springer Nature
Release : 2022-01-27
ISBN : 3030819116
Language : En, Es, Fr & De

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Book Description :

Download Nanostructured Photocatalyst via Defect Engineering book written by Vitaly Gurylev, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Emerging Nanostructured Materials for Energy and Environmental Science

Emerging Nanostructured Materials for Energy and Environmental Science Book
Author : Saravanan Rajendran,Mu. Naushad,Kumar Raju,Rabah Boukherroub
Publisher : Springer
Release : 2019-02-07
ISBN : 3030044742
Language : En, Es, Fr & De

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Book Description :

This book provides the fundamental aspects of the diverse ranges of nanostructured materials (0D, 1D, 2D and 3D) for energy and environmental applications in a comprehensive manner written by specialists who are at the forefront of research in the field of energy and environmental science. Experimental studies of nanomaterials for aforementioned applications are discussed along with their design, fabrication and their applications, with a specific focus on catalysis, energy storage and conversion systems. This work also emphasizes the challenges of past developments and directions for further research. It also looks at details pertaining to the current ground – breaking of nanotechnology and future perspectives with a multidisciplinary approach to energy and environmental science and informs readers about an efficient utilization of nanomaterials to deliver solutions for the public.

Nanostructured Materials for Environmental Applications

Nanostructured Materials for Environmental Applications Book
Author : Subramanian Balakumar,Valérie Keller,M.V. Shankar
Publisher : Springer Nature
Release : 2021-08-25
ISBN : 3030720764
Language : En, Es, Fr & De

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Book Description :

This book discusses how nanostructured materials play a key role in helping address environmental challenges. Employing nanostructured materials in catalysis can increase the efficient decomposition of toxic pollutants in air, water, and soil. This multidisciplinary book discusses the most promising nanostructured materials made-up of metals, metal oxides, metal chalcogenides, multi-metal oxides, carbon nanostructures, and hybrid materials that can address environmental remediation. It provides a well-referenced introduction to newcomers from allied disciplines and will be valuable to researchers in academia, industry, and government working on solutions to environmental problems.

Nanostructured Anodic Metal Oxides

Nanostructured Anodic Metal Oxides Book
Author : Grzegorz D Sulka
Publisher : Micro and Nano Technologies
Release : 2020-03
ISBN : 0128167068
Language : En, Es, Fr & De

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Book Description :

Nanostructured Anodic Metal Oxides: Synthesis and Applications reviews the current status of fabrication strategies that have been successfully developed to generate nanoporous, nanotubular and nanofibrous anodic oxides on a range of metals. The most recent achievements and innovative strategies for the synthesis of nanoporous aluminum oxide and nanotubular titanium oxide are discussed. However, a special emphasis is placed on the possibility of fabrication of nanostructured oxide layers with different morphologies on other metals, including aluminum titanium, tantalum, tin, zinc, zirconium and copper. In addition, emerging biomedical applications of synthesized materials are discussed in detail. During the past decade, great progress has been made both in the preparation and characterization of various nanomaterials and their functional applications. The anodization of metals has proven to be reliable for the synthesis of nanoporous, nanotubular and nanofibrous metal oxides to produce a desired diameter, density, aspect ratio (length to diameter) of pores/tubes, and internal pore/tube structure.

Nanostructured Photocatalysts

Nanostructured Photocatalysts Book
Author : Van-Huy Nguyen,Dai-Viet N. Vo,Sonil Nanda
Publisher : Elsevier
Release : 2021-06-25
ISBN : 0128235969
Language : En, Es, Fr & De

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Book Description :

Nanostructured Photocatalysts: From Fundamental to Practical Applications offers a good opportunity for academic, industrial researchers and engineers to gain insights on the fundamental principles and updated knowledge on the engineering aspects and various practical applications of photocatalysis. This book comprehensively and systematically reviews photocatalytic fundamental aspects, ranging from reaction mechanism, kinetic modeling, nanocatalyst synthesis and design, essential material characterization using advanced techniques, and novel reactor design and scale-up. Future perspectives, techno-economical evaluation and lifecycle assessment of photocatalytic processes are also provided. Finally, a wide range of practical, important and emerging photocatalytic applications, namely wastewater treatment, air pollution remediation, renewable and green energy generation, and vital chemical production are thoroughly covered, making this book useful and beneficial for engineers, scientists, academic researchers, undergraduates and postgraduates. Provides a fundamental understanding of photocatalysis Covers all aspects of recent developments in photocatalytic processes and photocatalytic materials Focuses on advanced photocatalytic applications and future research advancements on energy, environment, biomedical, and other specialty fields Contains contributions from leading international experts in photocatalysis Presents a valuable reference for academic and industrial researchers, scientists and engineers

Nanostructured Energy Devices

Nanostructured Energy Devices Book
Author : Juan Bisquert
Publisher : CRC Press
Release : 2014-11-11
ISBN : 1439836027
Language : En, Es, Fr & De

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Book Description :

Due to the pressing needs of society, low cost materials for energy devices have experienced an outstanding development in recent times. In this highly multidisciplinary area, chemistry, material science, physics, and electrochemistry meet to develop new materials and devices that perform required energy conversion and storage processes with high efficiency, adequate capabilities for required applications, and low production cost. Nanostructured Energy Devices: Equilibrium Concepts and Kinetics introduces the main physicochemical principles that govern the operation of energy devices. It includes coverage of the physical principles that control energy devices made of nanostructured and bulk materials, with the main attention focused on solution processed thin film technologies. The book analyzes the fundamental concepts, main properties, and key applications of energy devices that are made using nanostructured materials and innovative thin film low cost technologies. This includes hybrid and organic solar cells, electrochemical batteries, diodes, LEDs and OLEDs, transistors, and the direct conversion of solar radiation to chemical fuels. It decodes rigorous formulation of thermodynamic concepts to establish energy diagrams, and explains also the fundamental kinetic models that determine the flow of electrons and ions in the device. The author lays out the main properties of semiconductors and their junctions for applications in solar cell and solar fuel devices. He emphasizes a unified view of the device operation principles that covers well-known examples but also enables you to discuss original research topics on a solid ground. Although a challenging field of science and technology, energy devices such as solar cells and batteries have the potential to impact the creation of a carbon-free energy economy. However, the field draws scientists from a broad set of backgrounds, united towards common goals. This text presents the main concepts that apply to several types of devices, from a very basic level so that you can gain insight into the general view of principles of operation of the energy devices. It pulls together the views and terminologies used by several communities to create better communication and increased collaboration among them.

Nanostructured Semiconductors Synthesized Using High Pressure Chemical Vapor Deposition with Nanoporous Templates

Nanostructured Semiconductors Synthesized Using High Pressure Chemical Vapor Deposition with Nanoporous Templates Book
Author : Briana Laubacker
Publisher : Unknown
Release : 2021
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

In this dissertation, nanostructured germanium and silicon prepared using porous templates with high pressure chemical vapor deposition (HPCVD) have been explored. Metal-organic frameworks (MOFs), mesoporous silicas, and mesoporous nitrogen-doped carbon (MPNC) all were investigated as template materials given their 3D connected structures and well-defined nanometer-sized pores. By depositing silicon or germanium within these templates, a nanostructured semiconductor can be synthesized with feature sizes of 10 nm or below. Silicon and germanium both display size-tunable optical and electronic properties, and are widely used in various devices, so a nanoscale semiconductor framework with features between 2-10 nm could be advantageous. Although there have been a few examples of silicon and germanium nanostructures reported in the literature, at the size range of interest to this work many conventional deposition techniques have mass transport or kinetic limitations that prevent them from fully infiltrating the small, tortuous pores present in mesoporous and microporous materials without the formation of voids or nanoparticles. To address this challenge, high pressure chemical vapor deposition (HPCVD) was developed in the Badding lab and was shown to be capable of completely infiltrating nanoporous templates. Using this process, a structure can be obtained that is periodic, with 3-D order and connectivity derived from the original template. Germanium was deposited within the empty pore networks of KIT-5 mesoporous silica using HPCVD. Characterization by small angle X-ray scattering, wide angle X-ray scattering, and transmission electron microscopy confirm that the resulting nanostructured germanium has well-defined ordered features that are 5 nm in size. To date, this is the smallest template material that has been successfully infiltrated using HPCVD. Additional composite materials were prepared by functionalizing mesoporous carbons and metal-organic frameworks with small amounts of silicon or germanium. A new sample holder was also designed and utilized to scale up processes, facilitating the use of characterization techniques that require larger amounts of material. These advances expand the capabilities of HPCVD by increasing both the potential template materials that can be used and the amount of material that can be synthesized with this technique. This dissertation expands the HPCVD technique for use with microporous and mesoporous templates. Overall, mesoporous materials were the most suitable given their larger pore sizes (2 -- 50 nm). Mesoporous silicas were fully infiltrated, resulting in a nanostructured semiconductor with a high degree of order and consistent feature sizes. A small amount of semiconductor was likely infiltrated within the smaller microporous (

Characterization of Nanostructured Semiconductors by Ultrafast Luminescence Imaging

Characterization of Nanostructured Semiconductors by Ultrafast Luminescence Imaging Book
Author : Jolie Blake
Publisher : Unknown
Release : 2017
ISBN : 9780355466133
Language : En, Es, Fr & De

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Book Description :

Single nanostructures are predicted to be the building blocks of next generation devices and have already been incorporated into prototypes for solar cells, biomedical devices and lasers. Their role in such applications requires a fundamental understanding of their opto-electronic properties and in particular the charge carrier dynamics occurring on an ultrafast timescale. Luminescence detection is a common approach used to investigate electronic properties of nanostructures because of the contact-less nature of these methods. They are, however, often not equipped to efficiently measure multiple single nanostructures nor do they have the temporal resolution necessary for observing femtosecond dynamics. This dissertation intends to address this paucity of techniques available for the contact-less measurement of single nanostructures through the development of an ultrafast wide-field Kerr-gated microscope system and measurement technique. The setup, operational in both the steady state and transient mode and capable of microscopic and spectroscopic measurements, was developed to measure the transient luminescence of single semiconductor nanostructures. With sub micron spatial resolution and the potential to achieve a temporal resolution greater than 90 fs, the system was used to probe the charge carrier dynamics at multiple discrete locations on single nanowires exhibiting amplified spontaneous emission. Using a rate model for amplified spontaneous emission, the transient emission data was fitted to extract the values of the competing Shockley-Read-Hall, non-geminate and Auger recombination constants. The capabilities of the setup were first demonstrated in the visible detection range, where single nanowires of the ternary alloy CdS$_{x} $Se$ _{1-x} $ were measured. The temporal emission dynamics at two separate locations were compared and calculation of the Langevin mobility revealed that the large carrier densities generated in the nanowire allows access to non-diffusion controlled recombination. In the second phase of this study the setup was configured to the ultraviolet detection range for measuring the nanowires of conductive metal oxides. ZnO was the metal oxide of focus in this research. Ultrafast measurements were conducted on ZnO nanowires and ASE dynamics from multiple regions along a nanowire were again fitted to the ASE model and the recombination constants extracted. The diminished influence of the Shockley-Read-Hall recombination rate on the measured luminescence suggested that leading quadratic term in the model is a measure of a two-body defect mediated recombination rate, from which a defect density could be calculated. The measured change in defect density along the length of the nanowire correlated with changes in the growth conditions that established a defect gradient. The results show that the Kerr-gated system, as well as being a probe of ultrafast dynamics, is also a new tool for measuring changes in defect density in single nanostructures.