Preparation and photoluminescence properties of ZnO/amorphous-BaTiO3 thin-films by sol-gel process

被引：14

作者：

Huang, Yanqiu ^{[1
]}

Lin, Jinru ^{[1
]}

Du, Hongyan ^{[1
]}

Gao, Lanfang ^{[1
]}

Hu, Yan ^{[1
]}

机构：

[1] China Univ Geosci, Fac Mat Sci & Chem Engn, Wuhan 430074, Peoples R China

来源：

MATERIALS LETTERS | 2006年 / 60卷 / 29-30期

关键词：

ZnO; amorphour-BaTiO3; thin films; sol-gel preparation; photoluminescence;

D O I：

10.1016/j.matlet.2006.03.120

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

ZnO/amorphous-BaTiO3 thin-films were prepared on glass substrates by a sol-gel process. DSC/TGA, XRD and AFM were used to analyze the thermolysis of the precursor and the crystal growth characteristics of ZnO, and IR spectroscopy was used to determine the presence of OH groups and C=O impurities containing in the films. Violet emission centering at 418 and 438 nm was observed in room temperature PL spectra of the films annealed at 400-500 degrees C. The strongest violet emission was observed in the film annealed at 400 degrees C. The emission intensity reduces as the annealing temperature increases, and vanishes in the film annealed at 550 degrees C. All of the films contain OH and C=O groups, and the films annealed at the temperature over 450 degrees C contain CO, impurities, indicating the enhancing oxidation of the films. The vanishing of the violet emission is probably due to the improvement of the oxygen deficient of ZnO crystals. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：3818 / 3821

页数：4

共 22 条

[1]

Strong ultraviolet and green emissions at room temperature from annealed ZnO thin films [J].