Emission of bright blue light from mesoporous silica with dense Si (Ge) nanocrystals

被引：15

作者：

Cho, AT ^{[1
]}

Shieh, JM

Shieh, J

Lai, YF

Dai, BT

Pan, FM

Kuo, HC

Lin, YC

Chao, KJ

Liu, PH

机构：

[1] Natl Nano Device Labs, Hsinchu 300, Taiwan

[2] Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan

[3] Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 30010, Taiwan

[4] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30010, Taiwan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2005年 / 8卷 / 06期

关键词：

D O I：

10.1149/1.1897351

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

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. (c) 2005 The Electrochemical Society. All rights reserved.

引用

页码：G143 / G146

页数：4

共 20 条

[1] Chemical vapor deposition of Ge nanocrystals on SiO2 [J].