Structural and optical properties of ZnO?Al 2 O 3 nanopowders prepared by chemical methods

被引：10

作者：

Romcevic, N. ^{[1
]}

Hadzic, B. ^{[1
]}

Romcevic, M. ^{[1
]}

Paunovic, N. ^{[1
]}

Sibera, D. ^{[2
]}

Narkiewicz, U. ^{[2
]}

Kuryliszyn-Kudelska, I. ^{[3
]}

Ristic-Djurovic, J. L. ^{[1
]}

Dobrowolski, W. D. ^{[3
]}

机构：

[1] Univ Belgrade, Inst Phys, Pregrevica 118, Belgrade 11080, Serbia

[2] West Pomeranian Univ Technol, Inst Chem & Environm Engn, Pulaskiego 10, PL-70322 Szczecin, Poland

[3] Polish Acad Sci, Inst Phys, Aleja Lotnikow 32-46, PL-02668 Warsaw, Poland

来源：

JOURNAL OF LUMINESCENCE | 2020年 / 224卷

关键词：

ZINC ALUMINATE SPINEL; ZNAL2O4; NANOPARTICLES; PHOTOLUMINESCENCE PROPERTIES; LUMINESCENCE PROPERTIES; SURFACE; RAMAN; PHONONS; SPECTRA; MODES; SIZE;

D O I：

10.1016/j.jlumin.2020.117273

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The nanopowders of (ZnO)1– x(Al2O3)x, where x ranges from 0 to 0.7, were obtained by two chemical methods: the co-precipitation/calcination and hydrothermal synthesis. The first assessment of structural and optical properties of the obtained nanopowders was undertaken by the SEM, XRD, Raman and far-infrared spectroscopy, which was followed by the photoluminescence spectroscopy at room temperature. The obtained far-infrared reflectivity spectra were analyzed using the fitting procedure. The dielectric function of ZnO–Al2O3 nanopowders was modeled by the Maxwell-Garnet formula under the assumption that the nanopowders are a mixture of homogenous spherical inclusions in air. The combined plasmon-LO phonon modes (CPPM) were observed in the far-infrared reflection spectra. The photoluminescence spectra contain emissions related to the presence of ZnO, ZnAl2O4, and AlOOH phases in the nanomaterial, which is in agreement with the results obtained by other experiments. © 2020 Elsevier B.V.

引用

页数：11

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