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Near infrared quantum cutting in heavy Yb doped Ce0.03Yb3xY(2.97−3x)Al5O12 transparent ceramics for crystalline silicon solar cells

Authors :
Yukun Li
Xiaorui Hou
Hao Teng
Shengming Zhou
Hui Lin
Wenjie Li
Tingting Jia
Source :
Journal of Applied Physics. 107:043107
Publication Year :
2010
Publisher :
AIP Publishing, 2010.

Abstract

Near infrared (NIR) quantum cutting involving the conversion of an absorbed blue photon into two NIR photons emission has been realized in heavy Yb doped Ce0.03Yb3xY(2.97−3x)Al5O12 (x=0.1, 0.25, and 0.5) transparent ceramics. Upon the 467 nm excitation, the energy transfer process was dominated by the cooperative downconversion from the 5d1 state of one Ce3+ ion to the F25/2 state of two Yb3+ ions. The influence of the Ce4+–Yb2+ charge transfer state (CTS) should not contribute much to the energy transfer process for the large energy gap between Ce3+:5d1 and the CTS. The calculated quantum yield of Yb3+ for the x=0.25 sample without concentration quenching was 175.4%.

Details

ISSN :
10897550 and 00218979
Volume :
107
Database :
OpenAIRE
Journal :
Journal of Applied Physics
Accession number :
edsair.doi...........cc9f0867a4eb0a8708e500cf12f1e7e7