Search for dissertations about: "n-TYPE CONDUCTIVITY"
Showing result 1 - 5 of 22 swedish dissertations containing the words n-TYPE CONDUCTIVITY.
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1. Image dipoles and polarons in organic semiconductors
Abstract : The rapid development of organic electronics depends on the synthesis of new π-conjugated molecules/polymers and the exploration of fundamental physics. However, most of the efforts have been concentrated on the former, leading to a lack of thorough understanding of many important concepts, which will become the ultimate limiting factor for overall performance and applications. READ MORE
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2. Synthesis and Characterization of New Inorganic Thermoelectric Materials
Abstract : With thermoelectric materials it is possible to convert a difference in temperature into electrical energy. This can be utilized for a more efficient use of available energy, eg. by converting waste heat from a combustion process. READ MORE
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3. Thermoelectric Ba8Ga16Ge30 clathrates for waste heat recovery
Abstract : The modern, highly industrialized, society of today requires huge amounts of energy to function. This has resulted in a heavy dependence on the very energy efficient fossil fuels, a source of energy which of course is not infinite and we are slowly approaching the day when oil runs out. READ MORE
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4. Doping of high-Al-content AlGaN grown by MOCVD
Abstract : The high-Al-content AlxGa1-xN, x > 0.70, is the principal wide-band-gap alloy system to enable the development of light-emitting diodes operating at the short wavelengths in the deep-ultraviolet, λ < 280 nm. READ MORE
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5. Electron Paramagnetic Resonance studies of negative-U centers in AlGaN and SiC
Abstract : Silicon (Si) is the most commonly used n-type dopant in AlGaN, but the conductivity of Si-doped AlxGa1-xN was often reported to drop abruptly at high Al content (x>0.7) and the reason was often speculated to be due to either compensation by deep levels or self-compensation of the so-called DX (or negative-U) center. READ MORE