Red luminescence in ZnO films prepared by a glycol-based Pechini method

被引：27

作者：

Cai, J. H. ^{[1
]}

Ni, G. ^{[2
]}

He, G. ^{[1
]}

Wu, Z. Y. ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China

[2] Fudan Univ, Dept Opt Sci & Engn, Shanghai 200433, Peoples R China

来源：

PHYSICS LETTERS A | 2008年 / 372卷 / 22期

基金：

中国国家自然科学基金;

关键词：

luminescence; optical materials and properties; thin films; defects; sol-gel preparation;

D O I：

10.1016/j.physleta.2008.03.011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

ZnO thin films on fused quartz substrates were prepared by a glycol-based Pechini method. The structural and optical properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), optical transmittance spectrum, and photoluminescence (PL) spectrum. A red emission around 700 mn was found in PL spectrum, and its peak intensity gained a strong enhancement (similar to 140%) while annealing temperature increased from 700 degrees C to 800 degrees C. The red emission was ascribed to the possible high defect density in boundary layers of nanocrystalline grains. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：4104 / 4108

页数：5

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