Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 39 for “"Semiconducting materials"”.
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Computational study of advanced semiconducting materials for next-generation electronic devices
… Moore's law is to use alternative, advanced semiconducting materials such as indium gallium arsenide (InGaAs) and gallium oxide (Ga2O3), mainly for their superior electronic properties compared to traditional semiconductors. However, a series of major challenges need to be overcome in order …
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The manufacture and commercial applications of metastannic acid and of tin dioxide based semiconducting materials
The financing of the research project by Keeling and Walker Ltd. resulted from a need for a greater knowledge of the properties of metastannic acid and also for an understanding of the reaction parameters controlling the manufacture of the material. Once these criteria had been defined it was hoped …
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Large-area CVD growth of two-dimensional transition metal dichalcogenides and monolayer MoS₂ and WS₂ metal-oxide-semiconductor field-effect transistors
Two-dimensional semiconducting materials such as MoS₂ and WS₂ have been attractive for use in ultra-scaled electronic and optoelectronic devices because of their atomically-thin thickness, direct band gap, and lack of dangling bonds. Methods for large-area growth of 2D semiconducting materials are …
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Synthesis and characterisation of conjugated 4,8-benzobisthiazole derivatives for organic electronics
In recent years the field of organic semiconducting materials has seen rapid growth and development, with keen interest from both industrial and academic research. In the early stages of development, much of the performance improvements were due to increasingly complex device fabrication and …
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Research and development of CdS/CdTe solar cells incorporating ZnTe layers.
… thin film solar cells. In this work, three semiconducting materials were studied. These semiconducting materials are from group II-VI or also known as 'two-sixers' from periodic table. The semiconductors are cadmium sulfide (CdS), cadmium telluride (CdTe) and zinc telluride (ZnTe).All of …
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Electrical characterisation of defects in wide bandgap semiconductors.
… devices. The nature and properties of defects in semiconducting materials can be investigated by applying electrical characterization techniques such as thermal admittance spectroscopy (TAS), deep level transient spectroscopy (DLTS) and high resolution Laplace-DLTS measurements. This dissertation …
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Growth of CdTe/ CdZnTe single crystals by the vertical gradient freezing method
Single crystals of CdTe/CdZnTe are important semiconducting materials for the development of x-ray and y-ray detectors. They can also be used as substrates for the epitaxial growth of HgCdTe, which is a key material for far-infrared detectors with high resolution and large detection area. …
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Evaluation of the commercial potential of novel organic photovoltaic technologies
Photovoltaic cells based on organic semiconducting materials have the potential to compete with the more mature crystalline and thin film based photovoltaic technologies in the future primarily due to the expectation of significantly reduced manufacturing costs. Stabilized power conversion …
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Understanding transport processes of organic semiconductors via magnetic resonance methods
… has witnessed a huge development of organic semiconducting materials, including the boost in the discoveries of new materials for outstanding optoelectronic performance, as well as the rise of new application scenarios such as flexible electronics, biocompatible sensors, and inkjet printing …
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Design, synthesis and characterization of thiazole-based conjugated polymers and their applications to n-channel organic electronics
… decades, π-conjugated organic and polymeric semiconducting materials have attracted significant attention due to their promising electronic and optoelectronic properties. Therefore, their potential in applications to electronic and optoelectronic devices have been investigated, including …
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Measurement and Modeling of OPNMR Phenomena in GaAs Semiconductors
… the application of polarized light.</p><p>Semiconducting materials are the fundamental building blocks of important components in most aspects of modern society, including solar cells, optical detectors, and diodes and transistors in electronic circuits. Because of this prevalence, accurate …
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Off-Metal Synthesis of Some Aryl Substituted Rhenium n5-Cyclopenta [C] Pyridazyl Complexes
… electronic devices that utilize organics as the semiconducting material. Pyridazines, 6-membered aromatic rings with two adjacent nitrogens, are promising candidates for a variety of materials and commercial applications. These molecular electronic materials posses several advantages over …
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Advanced purification of aligned arrays of single-walled carbon nanotubes
… driving the investigation of alternative channel materials with higher energy efficiency and better performance. Among the large variety of semiconducting materials, single walled carbon nanotubes (SWNTs) are extremely attractive due to their outstanding charge transport properties and ultrathin …
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Heterogeneously bonded vertical cavity surface emitting lasers and thermal modeling
Typically semiconductor materials used for photonic devices have been limited to those exhibiting a direct bandgap. In order to incorporate indirect bandgap and non-semiconducting materials, extensive research efforts have been put into developing hybrid photonic devices, which consist of different …
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Carbon nanotube films for flexible electronics
… using organic small-molecule and polymer-based materials, or thin layers of crystalline inorganic semiconductors. Recently, films of carbon nanotubes have been proposed as electronic materials with superior electrical performance due to exceptional electrical and mechanical properties of …
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Synthesis of contorted nanographenes via multi-fold alkyne benzannulation reactions
… because of their potential application as semiconducting materials in organo-electronic devices. Contorted NGs have gained increased attention because of their fascinating molecular packing, reduced π-π interaction, enhanced solubility and lower band gap compared to the planar analogues. We …
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Elucidating Dopant Migration Mechanism for the Controlled Dopant Locations/Distribution within Core/Shell Nanocrystals
… principles behind transition metal ion doped semiconducting materials has drawn immense interest when designing ideal systems for use in optical and electronic devices. Dopant ions have been found to diffuse/migrate throughout solid materials when the thermal energy of the system is elevated …
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Surfactant Formulations for Water-Based Processing of a Polythiophene Derivative
<p>Conjugated polymers are semiconducting materials that are currently being researched for numerous applications from chemical and biological sensors to electronic devices, including photovoltaics and transistors. Much of the novel research on conjugated polymers is performed in academic settings, …
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Photophysics of small molecule organo-metallic complexes for OLED applications
… decades, advances in chemistry have produced new semiconducting materials with very different properties, transitioning from inorganic to organic semiconductors, allowing previous material constraints to be worked around. Organic semiconductors can be transparent, flexible, and soluble and are …
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