Dissertations / Theses on the topic 'Compound semiconductors – Design and construction – Materials'

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1

Leung, Yee-pan, and 梁懿斌. "A study on the fabrication and applications of quasi-one-dimensional zinc selenide nanostructures." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39848942.

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2

Kramer, Illan. "Fabrication and characterization of a hybrid heterojunction composed of N-type silicon and PEDOT:PSS." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99774.

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A hybrid organic/inorganic heterojunction has been fabricated using an n-type silicon wafer (< 111 >, 3 < ρ < 6 Ω · cm) and a p-type polymer, PEDOT:PSS (ρ = 1 Ω · cm). Standard fabrication techniques such as vacuum deposition and spin coating are required for fabrication and have been employed. I-V characteristics have been measured under both dark and illuminated conditions for different thicknesses of PEDOT:PSS as defined by the spin rate at which the polymer has been spin coated. The data has been analyzed and figures of merit such as series resistance, short circuit current, open circuit v
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3

Cheung, Chi-chuen Cecil, and 張志泉. "Device design and fabrication of InGaP/GaAsSb/GaAs DHBTs." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B29753727.

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4

Mills, Ryan Harris. "Development of a Ligno-Cellulosic Polymeric and Reinforced Sheet Molding Compound (SMC)." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/MillsRH2009.pdf.

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5

Johnson, Phillip. "Design and automation of MEDUSA (Materials and Electronic Device Universal System Analyzer)." Thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-03242009-040444/.

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6

Shen, Jeng-Jung. "Heterogeneous integration and the exploitation of strain in MBE growth : engineered substrates." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/13046.

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7

Kang, Sangbeom. "The epitaxial growth of GaN and A1GaN/GaN Heterostructure Field Effect Transistors (HFET) on Lithium Gallate (LiGaO₂) substrates." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/13903.

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8

Howells, Calvyn T. "Material and device design for organic photovoltaics." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/6810.

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This thesis presents novel materials for photovoltaic conversion. The materials described are solution-processable organic semiconductors and have been used in the fabrication of organic photovoltaic cells (OPVs). The widely used PEDOT:PSS layer was investigated in P3HT and PTB7 photovoltaics. By doping, the efficiencies recorded were amongst the highest reported in the field using a conventional architecture. Two low band-gap BODIPY-based polymers were introduced and shown to have properties favourable for optoelectronics. Photovoltaics consisting solely of the polymers as the active componen
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9

"Growth mechanism and interfacial electronic properties of graphene and silicene two dimensional semiconductor materials." 2013. http://library.cuhk.edu.hk/record=b5549746.

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自從2004年人們在實驗室上發現石墨烯以來,IV族二維半導體材料,例如石墨烯、硅烯等,由於其優異的電學、力學、光學、以及熱力學性質,受到學術界的廣泛關注。為了使IV族二維半導體材料得到廣泛引用,穩定地生長高質量的石墨烯、硅烯二維半導體材料以及透徹的理解石墨烯、硅烯二維半導體材料和襯底之間的界面特性成為至關重要的研究方向。本文對在銅表面用多環芳香烴形成石墨烯的生長機理以及石墨烯、硅烯和襯底之間的界面電子學特性進行了詳細的分析和研究。希望以此能對IV族二維半導體材料的廣泛應用具有促進作用,並且對合理的設計電子器件結構具有新的啟示。<br>首先,我們用密度泛函理論對在銅表面用多環芳香烴形成石墨烯的生長機理進行了研究。理論計算表明在銅表面多環芳香烴形成石墨烯的生長過程主要包括:(1)在銅表面的誘導下多環芳香烴脫氫,(2)這些已經脫氫的多環芳香烴在銅表面相互結合形成石墨烯。由於銅和碳的相互作用非常弱,所以在銅表面這些已經脫氫的多環芳香烴並不會進一步分解成更小的碳團簇或者單個的碳原子。因此多環芳香烴的空間幾何構型對於最終形成的石墨烯的質量以及最低成長溫度有至關重要的影響。提高生長溫度可以提升脫氫多環芳香烴的活性和熱運動性,從而提高最終生成的石墨烯的質量。六苯并苯由於具有和石墨烯相同的六重對稱性和晶格結構,所以其在低溫生長高質量石墨烯方面最具有優勢。<br>其次,我們就石墨烯和(0001)二氧化
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10

Sithole, Phila Elvis. "Two-dimensional CCD position sensor system for active magnetic bearings." 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001047.

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M. Tech. Digital Technology.<br>This dissertation reports on an optical-based two-dimensional position sensor for use in Active Magnetic Bearings (AMB) to measure the position of the levitated rotor. The motivation for the deployment of optical technology is the well-known advantage of high precision contactless displacement measurement. The radial and axial edges of the rotor are illuminated by red and green laser beams respectively. The position of the rotor is determined from its image projected on a Charge Coupled Device (CCD) sensor. The measuring principle is demonstrated as a position s
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11

Ghane, Parvin. "Fabrication and analysis of CIGS nanoparticle-based thin film solar cells." 2013. http://hdl.handle.net/1805/3697.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Fabrication and analysis of Copper Indium Gallium di-Selenide (CIGS) nanoparticles-based thin film solar cells are presented and discussed. This work explores non-traditional fabrication processes, such as spray-coating for the low-cost and highly-scalable production of CIGS-based solar cells. CIGS nanoparticles were synthesized and analyzed, thin CIGS films were spray-deposited using nanoparticle inks, and resulting films were used in low-cost fabrication of a set of CIGS solar cell devices. This synthesis method utilizes a chemi
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12

Dey, Sagnik. "Fabrication modeling and reliability of novel architecture and novel materials based MOSFET devices." Thesis, 2006. http://hdl.handle.net/2152/2714.

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13

"Novel channel materials for Si based MOS devices: Ge, strained Si and hybrid crystal orientations." Thesis, 2007. http://hdl.handle.net/2152/3107.

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14

Joshi, Sachin Vineet 1981. "Novel channel materials for Si based MOS devices : Ge, strained Si and hybrid crystal orientations." 2007. http://hdl.handle.net/2152/13292.

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15

"Fabrication and characterization of a porous CuO/CeO₂/Al₂O₃ biomorphic compound." 2009. http://library.cuhk.edu.hk/record=b5894162.

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Chiu, Ka Lok = 多孔生物遺態氧化銅/氧化鈰/氧化鋁之複合物料的製作及其定性分析 / 趙家樂.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2009.<br>Includes bibliographical references.<br>Abstract also in Chinese.<br>Chiu, Ka Lok = Duo kong sheng wu yi tai yang hua tong/yang hua shi/yang hua lu zhi fu he wu liao de zhi zuo ji qi ding xing fen xi / Zhao Jiale.<br>Abstract --- p.i<br>摘要 --- p.iii<br>Acknowledgment --- p.v<br>Table of contents --- p.vi<br>List of table captions --- p.x<br>List of figure captions --- p.xi<br>Chapter Chapter 1 --- Introduction --- p.1<br>Chapter 1.1 --- Carbon monoxide (CO) --- p.1<br>Ch
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16

Altschul, Emmeline Beth. "Transition metal solar absorbers." Thesis, 2012. http://hdl.handle.net/1957/33382.

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A new approach to the discovery of high absorbing semiconductors for solar cells was taken by working under a set of design principles and taking a systemic methodology. Three transition metal chalcogenides at varying states of development were evaluated within this framework. Iron pyrite (FeS���) is well known to demonstrate excellent absorption, but the coexistence with metallic iron sulfides was found to disrupt its semiconducting properties. Manganese diselenide (MnSe���), a material heavily researched for its magnetic properties, is proposed as a high absorbing alternative to iron pyri
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17

Sundholm, Eric Steven. "Amorphous oxide semiconductor thin-film transistor ring oscillators and material assessment." Thesis, 2010. http://hdl.handle.net/1957/16365.

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Amorphous oxide semiconductor (AOS) thin-film transistors (TFTs) constitute the central theme of this thesis. Within this theme, three primary areas of focus are pursued. The first focus is the realization of a transparent three-stage ring oscillator with buffered output and an output frequency in the megahertz range. This leads to the possibility of transparent radio frequency applications, such as transparent RFID tags. At the time of its fabrication, this ring oscillator was the fastest oxide electronics ring oscillator reported, with an output frequency of 2.16 MHz, and a time delay per s
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18

Salve, Rima. "PV Based Converter with Integrated Battery Charger for DC Micro-Grid Applications." Thesis, 2014. http://hdl.handle.net/1805/6108.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>This thesis presents a converter topology for photovoltaic panels. This topology minimizes the number of switching devices used, thereby reducing power losses that arise from high frequency switching operations. The control strategy is implemented using a simple micro-controller that implements the proportional plus integral control. All the control loops are closed feedback loops hence minimizing error instantaneously and adjusting efficiently to system variations. The energy management between three components, namely, the photovol
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