Peculiarities of photoluminescence in gas ambient of doped ZnO nanopowders

被引：7
|
作者：
Lazoryk, I., V [1 ]
Popovych, I. D. [2 ]
Venhryn, Yu, I [1 ]
Savka, S. S. [1 ]
Bovhyra, R., V [1 ]
Serednytski, A. S. [1 ]
Mudry, S., I [3 ]
机构：
[1] NAS Ukraine, Pidstryhach Inst Appl Problems Mech & Math, Naukova Str 3b, UA-79060 Lvov, Ukraine
[2] Ivan Franko Natl Univ Lviv, Fac Elect & Comp Technol, Drahomanova Str 50, UA-79005 Lvov, Ukraine
[3] Ivan Franko Natl Univ, Dept Met Phys, Kyrylo & Mephodiy Str 8, UA-79005 Lvov, Ukraine
来源：
APPLIED NANOSCIENCE | 2020年 / 10卷 / 12期
关键词：
Nanopowder; Metal oxide; Photoluminescence; Gas sensor; ZINC-OXIDE NANOSTRUCTURES; METAL-OXIDES; NANORODS; GROWTH;
D O I：
10.1007/s13204-020-01336-8
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Investigation of the peculiarities of photoluminescence in different gas ambients of Si- and Ge-doped ZnO nanopowders was carried out. Nanopowders were obtained and doped by means of pulsed laser reactive technology. X-ray diffractometry, scanning, and transmission electron microscopy were conducted to determine the structure, shape, and size of the nanoparticles. Changing the gas environment leads to a significant change in the intensity of the photoluminescence spectra and its deformation; this is a result of the redistribution of existing luminescence centers and the emergence of additional luminescence centers caused by the adsorption on the nanopowders surface. The decomposition of luminescence spectra into elementary bands shows the presence of four elementary peaks at 430, 480, 515, and 555 nm. The influence of the impurity and the gas medium on the redistribution of elementary luminescence band intensities was investigated. The investigated nanopowders can be effectively used as sensitive materials for the construction of gas sensor systems.
引用
收藏
页码：5003 / 5008
页数：6
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