Strong room-temperature UV emission of nanocrystalline ZnO films derived from a polymeric solution

被引：23
|
作者：
Chatterjee, A
Shen, CH
Ganguly, A
Chen, LC
Hsu, CW
Hwang, JY
Chen, KH
机构：
[1] Natl Taiwan Univ, CCMS, Adv Mat Lab, Taipei 106, Taiwan
[2] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan
来源：
CHEMICAL PHYSICS LETTERS | 2004年 / 391卷 / 4-6期
关键词：
D O I：
10.1016/j.cplett.2004.05.021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
ZnO nanocrystalline films have been prepared by sol-gel method. X-ray diffraction study revealed the wurtzite structure with a (002) texture. The films treated up to 500 degreesC showed very strong UV emission at 3.3 eV with no distinct visible emission in both cathodoluminescence (CL) and photoluminescence (PL) measurements performed at room temperature. UV emission intensity was found to depend on the grain size and crystal orientation. A broad green emission at 2.4 eV, observed only in PL but not in CL, for the films treated at higher temperatures (greater than or equal to700 degreesC), is found to be due to the antisite defects rather than conventional oxygen vacancies. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：278 / 282
页数：5
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