Strong 1.53 μm to NIR-VIS-UV upconversion in Er-doped fluoride glass for high-efficiency solar cells

被引:137
|
作者
Ivanova, Svetlana [1 ,2 ]
Pelle, Fabienne [1 ]
机构
[1] ENSCP, CNRS, UMR 7574, Lab Chim Mat Condensee Paris, F-75231 Paris 05, France
[2] Univ Informat Technol Mech & Opt, Ctr Informat & Opt Technol, St Petersburg 197101, Russia
基金
俄罗斯基础研究基金会;
关键词
RARE-EARTH IONS; PAR TRANSFERT DENERGIE; UN TUNGSTATE MIXTE; OPTICAL-TRANSITIONS; FIBER LASER; SPECTROSCOPIC PROPERTIES; PHOSPHATE-GLASSES; LUMINESCENCE; TELLURITE; GERMANATE;
D O I
10.1364/JOSAB.26.001930
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Optical spectra of Er-doped modified ZBLAN glasses are studied at room temperature. Radiative quantum yields of the I-4(11/2) and I-4(13/2) levels are estimated from the experimentally measured lifetimes and from the spontaneous emission probabilities calculated from the Judd-Ofelt theory. The spectra of upconversion (UC) luminescence excited with 1.53 mu m cw Er fiber laser are investigated in a wide spectral domain [from the near-infrared (NIR) to UV]. Absolute UC efficiency (i.e., the ratio of UC luminescence power to the absorbed pump power) is experimentally measured; efficiency of up to 12.7% is obtained. A conclusion is made about perspectives of use of the studied glasses as upconverter material for solar cells of enhanced efficiency. (C) 2009 Optical Society of America
引用
收藏
页码:1930 / 1938
页数:9
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