Cr3+ sensitized near infrared emission in Al2O3:Cr,Nd/Yb phosphors

被引：26

作者：

Tawalare, P. K. ^{[1
]}

Bhatkar, V. B. ^{[2
]}

Omanwar, S. K. ^{[1
]}

Moharil, S. V. ^{[3
]}

机构：

[1] St Gadge Baba Amravati Univ, Dept Phys, Amravati 444602, India

[2] Shri Shivaji Sci Coll, Dept Phys, Amravati 444603, India

[3] Rashtrasant Tukadoji Maharaj Nagpur Univ, Dept Phys, Nagpur 440010, Maharashtra, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 790卷

关键词：

Near-infrared; Photoluminescence; Cr3+-> Ln(3+) energy transfer; Al2O3:Cr; UP-CONVERSION EMISSIONS; COMBUSTION SYNTHESIS; SPECTROSCOPIC PROPERTIES; LUMINESCENCE PROPERTIES; ENERGY-TRANSFER; AL2O3; FILMS; ND3+; IONS; PHOTOLUMINESCENCE; NANOPARTICLES;

D O I：

10.1016/j.jallcom.2019.03.201

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cr3+-> Ln(3+) energy transfer (Ln = Nd or Yb) is investigated for the first time in Al2O3 host. Intense near infrared (NIR) emission around 1 mu m is obtained as a result of this energy transfer. Excitation covers wide range in the visible region due to broad bands around 413 and 556 nm characteristic of Cr3+ center dot Nd3+-> Yb3+ energy transfer can extend the excitation spectrum well into NIR region. However, though overall emission intensity is higher, emission gets distributed between Nd3+ and Yb3+. It is suggested that Al2O3:Cr,Nd/Yb phosphors can be useful for applications like solar pumped lasers and downshifting layers for copper indium gallium selenide (CIGS) solar cells. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：1192 / 1200

页数：9

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