Photoluminescence of Sm3+ doped ZrO2 coatings formed by plasma electrolytic oxidation of zirconium

被引：23
|
作者：
Stojadinovic, Stevan [1 ]
Tadic, Nenad [1 ]
Vasilic, Rastko [1 ]
机构：
[1] Univ Belgrade, Fac Phys, Belgrade 11000, Serbia
来源：
MATERIALS LETTERS | 2016年 / 164卷
关键词：
Photoluminescence; Plasma electrolytic oxidation; ZrO2; Samarium; OPTICAL-PROPERTIES; FILMS; LUMINESCENT; OXIDE;
D O I：
10.1016/j.matlet.2015.11.056
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, we have investigated photoluminescence (PL) of Sm3+ doped ZrO2 coatings formed by plasma electrolytic oxidation (PEO) of zirconium in electrolyte containing Sm2O3 powder. Obtained PL emission spectra feature two distinct regions. The first region is related to ZrO2 PL band with maximum positioned at about 490 nm, while the second region in the orange-red part of the spectrum shows four sharp emission bands which are related to f-f transitions of Sm3+ from excited level 40312 to the lover levels H-6(J) (J=5/2, 7/2, 9/2, and 11/2). Increase of PL with time is related to increase of oxygen vacancy defects and the content of Sm3+ in the coatings formed during the process. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：329 / 332
页数：4
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