Photoluminescence of ZnO/C Nanocomposites Formed by the Sol-Gel Method

被引：4
|
作者：
Denisov, N. M. [1 ]
Chubenko, E. B. [1 ]
Shevtsova, T. A. [1 ]
Bondarenko, V. P. [1 ]
Borisenko, V. E. [1 ]
机构：
[1] Belarus State Univ Informat & Radioelect, 6 P Brovka Str, Minsk 220013, BELARUS
来源：
JOURNAL OF APPLIED SPECTROSCOPY | 2018年 / 85卷 / 03期
关键词：
zinc oxide; carbon; nanocomposite; sol-gel method; photoluminescence; ENHANCED PHOTOCATALYTIC ACTIVITY; GRAPHENE OXIDE COMPOSITES; OPTICAL-PROPERTIES; NANOSTRUCTURES; LUMINESCENCE; TITANIUM; GROWTH; UV;
D O I：
10.1007/s10812-018-0667-8
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Films of undoped zinc oxide (ZnO) and of ZnO/C nanocomposite were formed by the sol-gel method on glass substrates and on fiberglass using zinc acetate as a precursor and with the addition of zinc chloride respectively. Analysis of the photoluminescence spectra of ZnO/C films at high (N-2-laser) and low (HeCd-laser) excitation levels made it possible to establish the defining role of bound excitons in this process at 20-60 K, due to the presence of chlorine residues in the films. With the temperature raised to 300 K the role of recombination through the 1LO- and 2LO-phonon replicas of free exciton levels and impurity-defect levels begins to dominate in the photoluminescence of the ZnO/C films.
引用
收藏
页码：422 / 427
页数：6
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