Broadband downconversion in YVO4:Tm3+,Yb3+ phosphors

被引：20

作者：

Jiang Guicheng ^{[1
]}

Wei Xiantao ^{[1
]}

Chen Yonghu ^{[1
]}

Duan Changkui ^{[1
]}

Yin Min ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2013年 / 31卷 / 01期

基金：

中国国家自然科学基金;

关键词：

downconversion; YVO4:Tm3+; Yb3+; energy transfer; rare earths; NEAR-INFRARED DOWNCONVERSION; ENERGY-TRANSFER; QUANTUM YIELDS; YB3+; SPECTROSCOPY;

D O I：

10.1016/S1002-0721(12)60229-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

An efficient near-infrared (NIR) downconversion (DC) by converting broadband ultraviolet (UV) into NIR was demonstrated in YVO4: Tm3+,Yb3+ phosphors. The phosphors were extensively characterized using various methods such as X-ray diffraction, photoluminescence excitation, photoluminescence spectra and decay lifetime to provide supporting evidence for DC process. Upon UV light varying from 260 to 350 nm or blue light (473 nm) excitation, an intense NIR emission of Yb3+ corresponding to transition of F-2(5/2)-> F-2(7/2) peaking at 985 nm was generated. The visible emission, the NIR mission and the decay lifetime of the phosphors of various Yb3+ concentrations were investigated. Experimental results showed that the energy transfer from vanadate group to Yb3+ via Tm3+ was very efficient. Application of the broadband DC YVO4: Tm3+, Yb3+ phosphors might greatly enhance response of silicon-based solar cells.

引用

页码：27 / 31

页数：5

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