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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Photoluminescence studies of quasi-one-dimensional ZnSe nanostructures. / 準一維的硒化鋅納米結構的光致發光研究 / Photoluminescence studies of quasi-one-dimensional ZnSe nanostructures. / Zhun yi wei de xi hua xin na mi jie gou de guang zhi fa guang yan jiu

January 2004 (has links)
Ip Kit Man = 準一維的硒化鋅納米結構的光致發光研究 / 葉潔雯. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 68-71). / Text in English; abstracts in English and Chinese. / Ip Kit Man = Zhun yi wei de xi hua xin na mi jie gou de guang zhi fa guang yan jiu / Ye Jiewen. / ACKNOWLEDGEMENTS --- p.i / ABSTRACT --- p.ii / TABLE OF CONTENTS --- p.vi / LIST OF TABLE --- p.vii / LIST OF FIGURES --- p.viii / Chapter Chapter1 --- Introduction / Chapter 1.1 --- Motivation --- p.1 / Chapter 1.2 --- Literature review --- p.2 / Chapter 1.3 --- Our study --- p.4 / Chapter 1.4 --- Growth conditions --- p.4 / Chapter Chapter2 --- Background / Chapter 2.1 --- Basic principle of PL --- p.6 / Chapter 2.2 --- Theories of excitations in semiconductor / Chapter 2.2.1 --- Bandgap and temperature effect of ZnSe --- p.8 / Chapter 2.2.2 --- Structure of ZnSe --- p.13 / Chapter 2.3 --- Surface effects --- p.16 / Chapter 2.4 --- Gas -Surface Interaction --- p.20 / Chapter Chapter 3 --- Experimental Procedures / Chapter 3.1 --- Setup of PL Spectroscopy --- p.21 / Chapter 3.2 --- Passivation and separation of ZnSe nanostructures --- p.26 / Chapter Chapter 4 --- Results and Discussions / Chapter 4.1 --- Analysis of ZnSe/Si nanostructures / Chapter 4.1.1 --- "Morphology, structure and separation of as-grown ZnSe/Si nanostructures" --- p.30 / Chapter 4.1.2 --- Temperature dependent PL of as-grown and very low density ZnSe/Si nanostructures --- p.33 / Chapter 4.1.3 --- Temperature dependent PL of ZnSe/Al203 nanowires --- p.41 / Chapter 4.1.4 --- Growth conditions dependence on PL --- p.44 / Chapter 4.1.4a --- PL result comparison: ZnSe grown on 3 different substrate --- p.45 / Chapter 4.1.4b --- PL result comparison: Silver and gold catalyst --- p.45 / Chapter 4.2 --- Analysis of the ammonium sulfide treated samples / Chapter 4.2.1 --- XPS results of ammonium sulfide treated samples --- p.47 / Chapter 4.2.2 --- Relationship between immersion time and enhancement factors of PL intensity --- p.49 / Chapter 4.3 --- Analysis of effects in PL of ZnSe/Si nanostructures in different gas ambients --- p.53 / Chapter Chapter 5 --- Conclusions --- p.66 / References --- p.68
2

Morphological and cathodoluminescence studies of ZnSe quasi-one-dimensional nanostructures. / 硒化鋅准一維納米結構的形貌和陰極射線致發光的研究 / Morphological and cathodoluminescence studies of ZnSe quasi-one-dimensional nanostructures. / Xi hua xin zhun yi wei na mi jie gou de xing mao he yin ji she xian zhi fa guang de yan jiu

January 2004 (has links)
Liu Zhuang = 硒化鋅准一維納米結構的形貌和陰極射線致發光的研究 / 劉壯. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 60-63). / Text in English; abstracts in English and Chinese. / Liu Zhuang = Xi hua xin zhun yi wei na mi jie gou de xing mao he yin ji she xian zhi fa guang de yan jiu / Liu Zhuang. / ABSTRACT --- p.i / ACKNOWLEDGMENTS --- p.iii / TABLE OF CONTENTS --- p.iv / LIST OF TABLES --- p.vi / LIST OF FIGURES --- p.vii / Chapter 1. --- Introduction --- p.1 / Chapter 1.1 --- Synthesizing quasi one-dimensional nanostructures of ZnSe using MOCVD --- p.1 / Chapter 1.2 --- Well-aligned nanostructures and heterocrystalline nanorods --- p.2 / Chapter 1.3 --- Advantages of CL in studying nanostructures --- p.3 / Chapter 2. --- Experimental conditions and procedures --- p.7 / Chapter 2.1 --- Information on the samples --- p.7 / Chapter 2.2 --- SEM and CL setting --- p.9 / Chapter 2.3 --- CL calibration --- p.10 / Chapter 3. --- Experimental results and data analysis --- p.14 / Chapter 3.1 --- SEM results and discussion --- p.14 / Chapter 3.1.1 --- SEM studies helping to find the optimal growth condition --- p.14 / Chapter 3.1.2 --- Morphological studies --- p.18 / Chapter 3.1.3 --- The growth direction of well-aligned nanostructure --- p.22 / Chapter 3.1.4 --- Discussion of the growth mechanisms of the nanostructures based on the morphological studies --- p.28 / Chapter 3.2 --- CL results and discussion --- p.34 / Chapter 3.2.1 --- CL spectra of nanostructures of different morphologies --- p.34 / Chapter 3.2.2 --- CL images for studying of distribution of localized radiative centers --- p.40 / Chapter 3.2.3 --- CL studies of a single nanorod --- p.44 / Chapter 3.2.3.1 --- Room temperature CL studies of a single nanorod --- p.44 / Chapter 3.2.3.2 --- Liquid Helium temperature (4.5 K) CL studies of a single nanorod --- p.50 / Chapter 4. --- Conclusions --- p.59 / Reference --- p.60
3

Indium donor complexes with native point defects in zinc selenide

Lundquist, Randy 07 March 1994 (has links)
Graduation date: 1994
4

Spin-flip Raman scattering of wide band gap semiconductor heterostructures

Orange, Catherine Louise January 1998 (has links)
No description available.
5

Photoluminescence studies of quasi-one-dimensional ZnSe nanostructures in different ambient gases. / 在不同氣體中一的維硒化鋅鈉米結構的發光研究 / Photoluminescence studies of quasi-one-dimensional ZnSe nanostructures in different ambient gases. / Zai bu tong qi ti zhong yi de wei xi hua xin na mi jie gou de fa guang yan jiu

January 2005 (has links)
Ng Ching Man = 在不同氣體中一的維硒化鋅鈉米結構的發光研究 / 吳靜雯. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves 67-69). / Text in English; abstracts in English and Chinese. / Ng Ching Man = Zai bu tong qi ti zhong yi de wei xi hua xin na mi jie gou de fa guang yan jiu / Wu Jingwen. / Contents / Acknowledgements --- p.ii / Abstract --- p.iii / Chapter Chapter 1- --- Introduction --- p.1 / Chapter 1.1 --- Background --- p.1 / Chapter 1.2 --- Motivation --- p.3 / Chapter 1.3 --- Our Work --- p.4 / Chapter Chapter 2 - --- Experiment --- p.5 / Chapter 2.1 --- MOCVD System --- p.5 / Chapter 2.2 --- Metalorganic Sources --- p.5 / Chapter 2.3 --- Substrates --- p.7 / Chapter 2.4 --- Growth of ZnSe Nanowires --- p.7 / Chapter 2.5 --- Sample Passivation --- p.8 / Chapter 2.6 --- PL measurements --- p.8 / Chapter 2.7 --- Ambient Gases --- p.9 / Chapter 2.8 --- Gases Handling Apparatus --- p.9 / Chapter 2.9 --- Ambient Gases and Laser Power Control in PL Measurements --- p.11 / Chapter Chapter 3 - --- Characterization --- p.13 / Chapter 3.1 --- Photoluminescence --- p.13 / Chapter 3.2 --- Secondary Electron Microscopy --- p.14 / Chapter 3.3 --- X-Ray diffraction --- p.15 / Chapter Chapter 4 - --- Results --- p.16 / Chapter 4.1 --- ZnSe Nanowires Grown on Si(100) --- p.16 / Chapter 4.1.1 --- Morphology and Structure of the As Synthesized Sample --- p.16 / Chapter 4.1.2 --- Morphology and Structure of the Sample after Passivation --- p.17 / Chapter 4.2 --- Effect of Ambient Condition on Photoluminescence --- p.19 / Chapter 4.2.1 --- PL in Vacuum Ambient --- p.20 / Chapter 4.2.2 --- PL Spectra in different Ambient Gases --- p.21 / Chapter 4.2.3 --- PL Reversibility --- p.23 / Chapter 4.3 --- "Effect of Pressure, Concentration and Power of Excitation on the Photoluminescence of Nanowires" --- p.26 / Chapter 4.3.1 --- Ambient Pressure --- p.27 / Chapter 4.3.1.1 --- H2S --- p.27 / Chapter 4.3.1.2 --- H2 --- p.30 / Chapter 4.3.1.3 --- CO --- p.32 / Chapter 4.3.2 --- Ambient Concentration --- p.33 / Chapter 4.3.2.1 --- H2S --- p.33 / Chapter 4.3.2.2 --- H2 --- p.36 / Chapter 4.3.3 --- Excitation Power --- p.38 / Chapter 4.3.3.1 --- H2S --- p.38 / Chapter 4.3.3.2 --- H2 --- p.40 / Chapter 4.3.3.3 --- CO --- p.41 / Chapter Chapter 5 - --- Discussions --- p.42 / Chapter 5.1 --- Quality of nanowires --- p.42 / Chapter 5.2 --- Surface Reaction --- p.43 / Chapter 5.2.1 --- Surface States --- p.43 / Chapter 5.2.2 --- Gas-surface interaction --- p.46 / Chapter 5.2.2.1 --- Physiosorption --- p.46 / Chapter 5.2.2.2 --- Chemisorption --- p.47 / Chapter 5.3 --- (NH4)2S passivation --- p.48 / Chapter 5.3.1 --- Etching --- p.48 / Chapter 5.3.2 --- (NH4)2S passivation --- p.48 / Chapter 5.4 --- PL increase in Vacuum --- p.50 / Chapter 5.5 --- Effects of different Gases --- p.50 / Chapter 5.5.1 --- H2S --- p.50 / Chapter 5.5.2 --- H2 --- p.53 / Chapter 5.5.3 --- CO --- p.54 / Chapter 5.5.4 --- Other explanations --- p.54 / Chapter 5.6 --- The amount of Intensity Change --- p.56 / Chapter 5.7 --- Rates of Adsorption and Desorption --- p.56 / Chapter Chapter 6 - --- Conclusions --- p.58 / Appendices --- p.60 / Chapter I - --- Fitted parameter of the adsorption and desorption of H2S and CO --- p.60 / Chapter II - --- Calculation of gas and photon fluxes --- p.65 / References --- p.67
6

Epitaxial growth of gallium arsenide on zinc selenide /

Balch, Joseph W. January 1971 (has links)
No description available.
7

Optical, laser spectroscopic, and electrical characterization of transition metal doped ZnSe and ZnS nano- and microcrystals

Kim, Changsu, January 2009 (has links) (PDF)
Thesis (Ph. D.)--University of Alabama at Birmingham, 2009. / Title from PDF title page (viewed Feb. 3, 2010). Additional advisors: Renato Camata, Derrick Dean, Chris M. Lawson, Andrei Stanishevsky, Sergey Vyazovkin. Includes bibliographical references (p. 133-140).
8

Characterization of zinc selenide-based ultraviolet detectors

Naval, Victoriano C. January 2009 (has links) (PDF)
Thesis (M.S. in Applied Physics)--Naval Postgraduate School, December 2009. / Thesis Advisor(s): Karunasiri, Gamani. Second Reader: Smith, Craig. "December 2009." Description based on title screen as viewed on January 28, 2010. Author(s) subject terms: Zinc Selenide, photodetectors, ultraviolet, Schottky, responsivity, current-voltage, depletion region, bandgap, melanoma, dark current, forward biased, reverse biased. Includes bibliographical references (p. 39-40). Also available in print.
9

A study on the fabrication and applications of quasi-one-dimensional zinc selenide nanostructures

Leung, Yee-pan. January 2007 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2008. / Also available in print.
10

Photoluminescence and optical absorption spectroscopy of infrared materials Cr²+:ZnSe and ZnGeP₂

Rablău, Corneliu Ioan. January 1999 (has links)
Thesis (Ph. D.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains xv, 200 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 194-200).

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