Spectral behavior of the emission around 3.31 eV (A-line) from ZnO nanocrystals
Spectral behavior of the emission around 3.31 eV (A-line) from ZnO nanocrystals
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DOI：
10.1016/j.jlumin.2009.11.030
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发表时间：
2010-05-01
影响因子：
3.6
通讯作者：
Kang, T. W.
中科院分区：
文献类型：
--
作者：
Kurbanov, S. S.;Kang, T. W.
研究了三种不同粒径（10-1000 nm）的 ZnO 纳米晶体在 3.31 eV（A 线）附近的发射。光致发光（PL）测量是在不同的激发密度和不同的温度下进行的。 A 线发射表现出对温度和激发功率密度的强烈依赖性。随着激发密度和温度的增加，观察到 A 线发射的自由激子的紧密间隔的第一纵向光学 (LO) 声子复制品的重叠。 (C) 2009 Elsevier B.V. 保留所有权利。
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.