Academic literature on the topic 'Glass doping'

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Dissertations / Theses on the topic "Glass doping"

1

Banyai, William Charles. "Optical nonlinearities in semiconductor doped glass channel waveguides." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184505.

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The nonlinear optical properties of a semiconductor-doped glass (SDG) channel waveguide were measured on a picosecond time-scale; namely, fluence-dependent changes in the absorption and the refractive index as well as the relaxation time of the nonlinearity. Slower, thermally-induced changes in the refractive index were also observed. The saturation of the changes in the absorption and the refractive index with increasing optical fluence is explained using a plasma model with bandfilling as the dominant mechanism. The fast relaxation time of the excited electron-hole plasma (20 ps) is explaine
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2

Sedani, Salar Habibpur. "Fabrication And Doping Of Thin Crystalline Si Films Prepared By E-beam Evaporation On Glass Substrate." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615628/index.pdf.

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In this thesis study, fabrication and doping of silicon thin films prepared by electron beam evaporation equipped with effusion cells for solar cell applications have been investigated. Thin film amorphous Si (a-Si) layers have been fabricated by the electron beam evaporator and simultaneously doped with boron (B) and phosphorous (P) using effusion cells. Samples were prepared on glass substrates for the future solar cell operations. Following the deposition of a-Si thin film, crystallization of the films has been carried out. Solid Phase Crystallization (SPC) and Metal Induced Crystallization
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3

Gordo, Vanessa Orsi [UNESP]. "Estudo das propriedades estruturais e ópticas do sistema vítreo 80TeO2-20WO3 dopado com Yb2O3." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/91979.

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Made available in DSpace on 2014-06-11T19:25:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-06-28Bitstream added on 2014-06-13T18:28:59Z : No. of bitstreams: 1 gordo_vo_me_ilha.pdf: 1058796 bytes, checksum: 2c8438704796726349dfe606c2595b4b (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Neste trabalho foi estudado o sistema vítreo (100-x)% (80% TeO2-20% WO3)-(x)% Yb2O3, onde x = 0; 0,1; 0,2; 0,3; 0,4 e 0,5%. As técnicas de difração de raios-X, espectroscopia no infravermelho, espectroscopia Raman e espectroscopia no UV-Vis foram usadas para caracter
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4

Hubert, Mathieu. "Chalcogenide Glasses for Infrared Applications: New Synthesis Routes and Rare Earth Doping." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/223357.

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Chalcogenide glasses and glass-ceramics present a high interest for the production of thermal imaging lenses transparent in the 3-5 μm and 8-12 μm windows. However, chalcogenide glasses are conventionally synthesized in sealed silica ampoules which have two major drawbacks. First, the low thermal conductivity of silica limits the sample dimensions and second the silica tubes employed are single use and expensive, and represent up to 30% of the final cost of the material. The present work therefore addresses the development of innovative synthesis methods for chalcogenide glass and glass-cerami
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5

Rajbhandari, Prashant. "Advanced NMR characterization of the effect of Al2O3, B2O3 and SiO2 doping on low-Tg phosphate based glass." Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10069/document.

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Les verres de phosphates à faible Tg et forte stabilité thermique sont étudié dans le système (66-x)ZnO- xNa2O-33.4 P2O5. Les mesures DSC ont montré un écart Tx-Tg de 197 °C et une Tg de 339 °C pour x= 20. La RMN 31P 1D/2D révèle la diminution du désordre due à la substitution progressive de Zn par Na. Les formulations x=20 et x=33 ont été dopé par de l’Al2O3, B2O3 et SiO2 (1-4 % mol.) et ses effets sur les propriétés physiques comme la température de transition vitreuse, la stabilité thermique et la durabilité chimique ont été investiguées. La DRX et la RMN 31P ont été réalisés pour suivre le
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6

Gordo, Vanessa Orsi. "Estudo das propriedades estruturais e ópticas do sistema vítreo 80TeO2-20WO3 dopado com Yb2O3 /." Ilha Solteira : [s.n.], 2010. http://hdl.handle.net/11449/91979.

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Orientador: Keizo Yukimitu<br>Banca: José Brás Barreto Oliveira<br>Banca: Noelio Oliveira Dantas<br>Resumo: Neste trabalho foi estudado o sistema vítreo (100-x)% (80% TeO2-20% WO3)-(x)% Yb2O3, onde x = 0; 0,1; 0,2; 0,3; 0,4 e 0,5%. As técnicas de difração de raios-X, espectroscopia no infravermelho, espectroscopia Raman e espectroscopia no UV-Vis foram usadas para caracterizar os efeitos da dopagem sobre as propriedades estruturais e ópticas dos vidros estudados. Usando os dados de espectroscopia na região espectral ultravioleta-visível foi possível observar que não houve mudança das freqüênci
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7

Paradisi, Andrea. "Ultra-high carrier modulation in two dimensions through space charge doping : graphene and zinc oxide." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066297/document.

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La modulation de la densité de charge est un aspect important de l'étude de les transitions de phase électroniques ainsi que des propriétés électroniques des matériaux et il est à la base de plusieurs applications dans la micro-électronique. L'ajustement de la densité des porteurs de charge (dopage) peut être fait par voie chimique, en ajoutant des atomes étrangers au réseau cristallin du matériau ou électrostatiquement, en créant un accumulation de charge comme dans un Transistor é Effet de Champ. Cette dernier m ethode est réversible et particuliérement appropriée pour les matériaux bidimens
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8

Chanda, Sheetal Kumar. "Copper doped window layer for CdSe solar cells." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002794.

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9

Acharya, Krishna Prasad. "Photocurrent Spectroscopy of CdS/Plastic, CdS/Glass, and ZnTe/GaAs Hetero-pairs Formed with Pulsed-laser Deposition." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1245089031.

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10

Bossard, Cédric. "Elaboration et caractérisation d’un hybride organominéral à base de polycaprolactone et de bioverre sous forme de mousse macroporeuse pour la régénération osseuse." Thesis, Université Clermont Auvergne‎ (2017-2020), 2018. http://www.theses.fr/2018CLFAC068/document.

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L’accroissement de l’espérance de vie s’accompagne d’une détérioration de l’état de santé général des seniors et d’une recrudescence des maladies chroniques. Parmi les manifestations de la sénescence, l’atteinte de l’appareil locomoteur est particulièrement invalidante et accélère considérablement l’entrée en dépendance. C’est également le cas chez les plus jeunes lors d’atteintes traumatiques ou pathologiques. Ainsi, au niveau mondial 2,2 millions de greffes osseuses sont pratiquées chaque année, mais le taux de complications post-opératoires demeure élevé et est estimé à 15 % des interventio
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