標題: | Emission of bright blue light from mesoporous silica with dense Si (Ge) nanocrystals |
作者: | Cho, AT Shieh, JM Shieh, J Lai, YF Dai, BT Pan, FM Kuo, HC Lin, YC Chao, KJ Liu, PH 材料科學與工程學系 光電工程學系 Department of Materials Science and Engineering Department of Photonics |
公開日期: | 2005 |
摘要: | Three-dimensional Si (Ge) nanocrystals (NCs) were dispersed within the nanopores of mesoporous silica films by high-density plasma (HDP), low-density plasma, or implantation. Surface states of the resulting Si (Ge) NCs/silica arrays initiate blue-white photoluminescence (PL). HDP makes reactive species highly mobile and enables deposited NCs bonded with pore-wall well, therefore, efficiently constructing photoemission arrays. The mean density of HDP-synthesized semiconducting NCs is as high as 1 x 10(18)/cm(3). Accordingly, blue PL of arrays obtained with HDP, which is 4- 7 times stronger than those obtained with other methods, exhibits quantum-efficiency of 1%, near the reported value for green-to-red light emission from quantum-confined Si NCs. © 2005 The Electrochemical Society. All rights reserved. |
URI: | http://hdl.handle.net/11536/24381 http://dx.doi.org/10.1149/1.1897351 |
ISSN: | 1099-0062 |
DOI: | 10.1149/1.1897351 |
期刊: | ELECTROCHEMICAL AND SOLID STATE LETTERS |
Volume: | 8 |
Issue: | 6 |
起始頁: | G143 |
結束頁: | G146 |
顯示於類別: | 期刊論文 |