Optical properties of ZnO thin films on LiNbO3 and LiTaO3 substrates grown by pulsed laser deposition

被引：33

作者：

Lee, GH ^{[1
]}

机构：

[1] Dong Eui Univ, Dept Informat Mat Engn, Pusan 614714, South Korea

来源：

SOLID STATE COMMUNICATIONS | 2003年 / 128卷 / 9-10期

关键词：

thin films; epitaxy; optical properties; luminescence;

D O I：

10.1016/j.ssc.2003.08.038

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Optical properties such as transmittance, optical band gap and room temperature photoluminescence were investigated for ZnO thin films -rown on LiNbO3 and LiTaO3 substrates by pulsed laser deposition method. The c-axis oriented ZnO films were grown epitaxially on (0001) LiNbO3 and (0001) LiTaO3 substrates. The transmittance of the films was over 90%. Peaks attributed to excitons were shown in absorption spectra, indicating that the thin films had high crystallinity. Photoluminescence spectra with the maximum peak at 540 nm were observed at room temperature, which seemed to be ascribed to excess zinc and (or) oxygen vacancy in the ZnO films caused by diffusion of Li from the substrates into the films during the deposition. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：351 / 354

页数：4