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
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