The Effect of Metals on the Optical Properties of Ge-Se-Te Glassy Thin Films PDF Download
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Author: Bogdan Lita
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 130
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Author: Bogdan Lita
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 130
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Book Description
Author: Jian Gan
Publisher:
ISBN:
Category : Metallic glasses
Languages : en
Pages : 106
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Author: D. G. Avery
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Donald Robert Uhlmann
Publisher:
ISBN:
Category : Glass
Languages : en
Pages : 280
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Book Description
Seven independently-authored chapters consider selected topics related to the rapidly growing interest in optical glass among scientists who were hitherto satisfied with opaque ceramics. They cover oxide, halide, and photochromic glasses; nonlinear optical properties; optical basicity; optical fiber
Author: Rongxin Wang
Publisher: Open Dissertation Press
ISBN: 9781361207796
Category :
Languages : en
Pages :
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This dissertation, "Preparation and Post-annealing Effects on the Optical Properties of Indium Tin Oxide Thin Films" by Rongxin, Wang, 王榮新, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled PREPARATION AND POST-ANNEALING EFFECTS ON THE OPTICAL PROPERTIES OF INDIUM TIN OXIDE THIN FILMS Submitted by WANG Rong Xin for the degree of Doctor of Philosophy at The University of Hong Kong in April 2005 Many opto-electronic devices, such as III-V compound devices, liquid crystal displays, solar cells, organic and inorganic light emitting devices, and ultraviolet photodetectors, demand transparent electrode materials simultaneously having high electrical conductance. To meet the requirements for particular applications, a great deal of basic research and studies have been carried out on the electrical and optical properties of these materials. As a most promising candidate for such materials, indium tin oxide (ITO) has attracted interest in recent years. Furthermore, ITO has many unique properties such as excellent adhesion on the substrate, thermal stability and ease of patterning. The deposition of high-quality ITO thin films is a key step for successful application of ITO thin films as transparent electrode materials. To obtain optimal electrical and optical properties of ITO films, the growth parameters and conditions must be determined. Moreover, the optical and electrical properties of ITO contact layers, which can either be on the top side or the bottom side of a device, are influenced by various post-deposition treatments. For the present work, ITO thin films were deposited on glass and quartz substrates using e-beam evaporation with different deposition rates. The influence of substrate material, deposition rate, deposition gas environment and post-deposition annealing on the optical properties of the films was investigated in detail. Atomic force microscopy, X-ray diffraction and X-ray photoemission spectroscopy was employed to obtain information on the chemical state and crystallization of the films. Analysis of these data suggests that the substrate material, deposition rate, deposition gas environment and post-deposition annealing conditions strongly affect the chemical composition and the microstructure of the ITO films and these in turn influence the optical properties of the film. Oxygen incorporation transfers the In O phase to the In O phase and removes metallic In to form both indium oxide 2 3-x 2 3 phases. Both of these reactions are beneficial for the optical transmittance of ITO thin films. Moreover, it was found that the incorporation and decomposition reactions of oxygen can be controlled so as to change the optical properties of the ITO thin films reversibly. DOI: 10.5353/th_b3154617 Subjects: Thin films - Optical properties Indium compounds Annealing of metals
Author: Paul Michael Grant
Publisher:
ISBN:
Category :
Languages : en
Pages : 213
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The central topic is the deduction of the optical constants from photometric measurements on epitaxial Ge films on CaF2 in the wavelength range 2000 - 6000A. Methods of film production are discussed, and the effect of deposition parameters on the crystallinity and reflectivity of films on fused quartz and CaF2 are reported. The principal conclusion is that epitaxial films give excellent agreement with bulk single crystal material as regards interband transition structure in their reflectivity and transmissivity coefficients R and T. However, the over-all amplitudes of R and T for films are strongly governed by residual surface roughness effects. Theoretical studies are carried out on the accuracy of derivation of the optical constants n and k from measurements of normal incidence R and T on a single film. A review is given of previous investigations and measurements of the optical properties and constants of germanium thin films. (Author).
Author: Aiqing Chen
Publisher:
ISBN:
Category : Dielectrics
Languages : en
Pages : 272
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Author: L. Tichý
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
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Author:
Publisher:
ISBN:
Category : Weights and measures
Languages : en
Pages : 416
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Author: Lawrence N. Hadley
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
Contents: Optical constants of chromium; Optical constants of tin; Electromagnetic levitation source; Alkali metal filters.
