Near-infrared quantum cutting in Pr3+/Yb3+ co-doped transparent tellurate glass via two step energy transfer

被引：26

作者：

Zhou, Xianju ^{[1
]}

Wang, Guangchuan ^{[1
]}

Zhou, Kaining ^{[1
]}

Li, Qingxu ^{[1
]}

机构：

[1] Chongqing Univ Posts & Telecommun, Dept Math & Phys, Chongqing 400065, Peoples R China

来源：

OPTICAL MATERIALS | 2013年 / 35卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Down-conversion; Energy transfer; Tellurate glass; Quantum efficiency;

D O I：

10.1016/j.optmat.2012.10.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of Pr3+/Yb3+ co-doped transparent tellurate glass samples were prepared by high-temperature melting method. The optical properties and energy transfer process from Pr3+ to Yb3+ were investigated. On excitation of Pr3+ ions with a blue visible photon at 449 nm, a near infrared emission at 1001 nm were observed in the Pr3+/Yb3+ co-doped tellurate glass, which is attributed to F-2(2/5) -> F-2(2/7) transition of Yb3+ ions. The feeding of Yb3+ ions is shown to be two step energy transfer from Pr3+ through (1)G(4) multiplet by excitation and emission spectra. The maximum total quantum efficiency reaches 136.7% when the co-doped Yb3+ mole concentration is 5%. The efficient down-conversion near infrared emission of Pr3+/Yb3+ co-doped tellurate glass has potential application in enhancing the conversion efficiency of crystalline silicon based solar cells. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：600 / 603

页数：4

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