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Near infrared quantum cutting in heavy Yb doped Ce{sub 0.03}Yb{sub 3x}Y{sub (2.97-3x)}Al{sub 5}O{sub 12} transparent ceramics for crystalline silicon solar cells

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.3298907· OSTI ID:21476139
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  1. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai 201800 (China)
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 Ce{sub 0.03}Yb{sub 3x}Y{sub (2.97-3x)}Al{sub 5}O{sub 12} (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 5d{sub 1} state of one Ce{sup 3+} ion to the {sup 2}F{sub 5/2} state of two Yb{sup 3+} ions. The influence of the Ce{sup 4+}-Yb{sup 2+} charge transfer state (CTS) should not contribute much to the energy transfer process for the large energy gap between Ce{sup 3+}:5d{sub 1} and the CTS. The calculated quantum yield of Yb{sup 3+} for the x=0.25 sample without concentration quenching was 175.4%.
OSTI ID:
21476139
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 4 Vol. 107; ISSN JAPIAU; ISSN 0021-8979
Country of Publication:
United States
Language:
English