National Changhua University of Education Institutional Repository : Item 987654321/16728
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 6487/11649
造訪人次 : 29400163      線上人數 : 112
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 進階搜尋

請使用永久網址來引用或連結此文件: http://ir.ncue.edu.tw/ir/handle/987654321/16728

題名: High-Resolution Electron Microscopy and Microanalysis of CdS and CdTe Quantum Dots in Glass Matrices
作者: Liu, Li‐Chi;M. J. Kim;Subhash H. Risbudand;R. W. Carpenter
貢獻者: 物理學系
日期: 1991
上傳時間: 2013-06-05T07:45:49Z
出版者: Taylor&Francis
摘要: CdS and CdTe auantum dots (QDs) precipitated from borosilicate glass matrices, exhibiting auantum confinement effects, have been characterized by optical spectroscopy and high-spatial-resolution electron microscopy. The particles appear to have formed initially by homogeneous nucleation and were randomly distributed, but the morphology of the particles and therefore growth processes differ. The CdTe particles were spherical single crystals, often with smali facets on {111} planes, or at most bicrystals. The measured average diameter of these particles was about 14 nm. They had a zinc-blende cubic structure with lattice constant corresponding to bulk CdTe crystals. For CdS the particles were relatively large polycrystals, composed of smaller single crystals, whose size was about 3–3 nm. The structure of these nanocrystals was wurzite-type hexagonal, with a lattice corresponding to CdS. Particle-size effects on absorption peak shifts were observed for both CdTe and CdS samples. Microscopically observed QD sizes were compared with predictions of theoretical models based on optical absorption features of quantum confined structures.
關聯: Philosophical Magazine Part B, 63(3): 769-776
顯示於類別:[物理學系] 期刊論文

文件中的檔案:

檔案 大小格式瀏覽次數
index.html0KbHTML548檢視/開啟


在NCUEIR中所有的資料項目都受到原著作權保護.

 


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋