Optical Properties of ZnO Powders Modified with ZnO Nanoparticles

被引：2
|
作者：
Mikhailov, M. M. [1 ]
Lapin, A. N. [1 ]
Yuryev, S. A. [1 ]
Goronchko, V. A. [1 ]
机构：
[1] Tomsk State Univ Control Syst & Radioelect, Tomsk, Russia
来源：
RUSSIAN PHYSICS JOURNAL | 2022年 / 65卷 / 08期
关键词：
zinc oxide; powders; nanoparticles; modification; spectra; absorption; reflection; scattering;
D O I：
10.1007/s11182-023-02757-y
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Diffuse reflectance spectra (rho lambda) in the range of 0.2-2.5 mu m and their changes after modification of micron-sized zinc oxide mZnO powders with nZnO nanopowders of various concentrations have been investigated. A decrease in the reflection coefficient (rho) in the region of 0.40-1.0 mu m and its increase in the region of 1.0-2.5 mu m in modified mZnO/nZnO powders have been established. It is shown that a decrease in the reflection coefficient is determined by an increase in the concentration of intrinsic point defects. The increase in the reflection coefficient is determined by two factors: an increase in the concentration of free electrons and an increase in the scattering coefficient due to a change in the granulometric composition of the modified powders. A mechanism for the formation of granules in nanoparticle-modified powders has been proposed.
引用
收藏
页码：1239 / 1245
页数：7
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