Synthesis, phase composition, electronic and spectroscopic properties of cobalt-doped aluminum oxynitride

被引：1
作者：
V. Ishchenko, Aleksey [1 ]
Akhmadullina, Nailya S. [2 ]
Leonidov, Ivan I. [3 ]
Sirotinkin, Vladimir P. [2 ]
Skvortsova, Liliya G. [2 ,4 ]
Mandrygina, Darya A. [5 ]
Shishilov, Oleg N. [4 ]
Zhidkov, Ivan S. [1 ]
Kukharenko, Andrey I. [1 ]
Weinstein, Ilya A. [1 ]
Kargin, Yuri F. [2 ]
机构：
[1] Ural Fed Univ, Ekaterinburg 620002, Russia
[2] Russian Acad Sci, AA Baikov Inst Met & Mat Sci, Moscow 119334, Russia
[3] Russian Acad Sci, Inst Solid State Chem, Ural Branch, Ekaterinburg, Russia
[4] Russian Technol Univ, Lomonosov Inst Fine Chem Technol, MIREA, Moscow 119571, Russia
[5] Russian Acad Sci, Zavaritsky Inst Geol & Geochem, Ural Branch, Ekaterinburg 620110, Russia
来源：
PHYSICA B-CONDENSED MATTER | 2024年 / 695卷
基金：
俄罗斯科学基金会;
关键词：
Aluminum oxynitride; Cobalt; Luminescence; XPS; Optical properties; RAY PHOTOELECTRON-SPECTROSCOPY; LUMINESCENCE PROPERTIES; OPTICAL-PROPERTIES; CRYSTAL-STRUCTURE; ENERGY-TRANSFER; ALON; FILMS; EU2+; DIFFRACTION; PHOTOLUMINESCENCE;
D O I：
10.1016/j.physb.2024.416593
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The article presents a comprehensive study of the synthesis, phase formation, electronic structure, and optical properties of cobalt-doped aluminum oxynitride Al5O6N (AlON) in the concentration range of 0.01-5 at%. The solubility limit of cobalt in AlON is found to be 0.1-0.2 at% compared to Al. No corundum is detected even at the lowest cobalt content (0.01 at%), but a low amount of AlN and Co or Co4N is observed. Cobalt ions are incorporated into AlON with the typical oxidation state of Co2+ and form Co-O and Co-N bonds in a ratio of 92/8. The bandgap (Eg) and lattice parameters of AlON:Co are found to be in the range of 5.72-5.84 eV and 7.9411-7.9539 & Aring;, respectively, and are influenced by the oxygen content. Pulsed cathodoluminescence spectra show five emission bands, with some attributed to (VAl-ON)-type defects. The luminescence intensity of AlON:Co decreases with higher contents of cobalt ions.
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页数：12
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