期刊
JOURNAL OF LUMINESCENCE
卷 130, 期 5, 页码 767-770出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2009.11.030
关键词
Photoluminescence; ZnO; Nanocrystals
类别
资金
- Korea government (MEST) [20090063543]
The emission at around 3.31 eV (A-line) from three types of ZnO nanocrystals with different particle sizes (10-1000 nm) was studied. The photoluminescence (PL) measurements were performed under different excitation densities and at different temperatures. The A-line emission exhibited a strong dependence on temperature and excitation power density. With increasing excitation density and temperature overlapping of the closely spaced first longitudinal optical (LO) phonon replica of free excitons by the A-line emission was observed. (C) 2009 Elsevier B.V. All rights reserved.
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