Optical properties of ZnO powder modified with ZnO nanoparticles | Izvestiya vuzov. Fizika. 2022. № 8. DOI: 10.17223/00213411/65/8/3

Optical properties of ZnO powder modified with ZnO nanoparticles

Diffuse reflectance spectra (ρ_λ) in the range of 0.2-2.5 μm and their changes after modification of micron-sized zinc oxide powders m ZnO with n ZnO nanopowders of various concentrations were investigated. A decrease in the reflection coefficient (ρ) in the region of 0.40-1.0 μm and its increase in the region of 1.0-2.5 μm in modified m ZnO/ n ZnO powders was 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.

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Keywords

zinc oxide, powders, nanoparticles, modification, spectra, absorption, reflection, scattering

Authors

Name	Organization	E-mail
Mikhailov M.M.	Tomsk State University of Control Systems and Radioelectronics	membrana2010@mail.ru
Lapin A.N.	Tomsk State University of Control Systems and Radioelectronics	alexey_nl@sibmail.com
Yuryev S.A.	Tomsk State University of Control Systems and Radioelectronics	yusalek@gmail.com
Goronchko V.A.	Tomsk State University of Control Systems and Radioelectronics	w_goronchko@mail.ru

Всего: 4

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