Journal
OPTICS EXPRESS
Volume 21, Issue 4, Pages 4167-4173Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.004167
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Funding
- National Nature Science Foundation of China [50802083]
- Basic Research Project of Shanghai Science and Technology Commission [12JC1408500]
- Fundamental Research Funds for the Central Universities [2011KJ018]
- Open Funds from the State Key Laboratory of Luminescent Materials and Devices (South China University of Technology)
- Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education
- Bayer-Tongji Eco-Construction and Materials Academy
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The Cr3+-Yb3+ codoped YAG crystals were synthesized by the solid state reaction method, in which the intense near-infrared emission around 1000 nm originated from Yb3+ F-2(5/2) -> (2)F(7/)2 transition was obtained due to the efficient energy transfer from Cr3+ to Yb3+. The stable and transient spectral measurements revealed that the phonon assistant energy transfer process is responsible for the energy transfer from Cr3+ to Yb3+ upon both the excitations of Cr3+: T-4(1) and T-4(2) energy levels. Due to the effective absorption of Cr3+ in the visible region in YAG and the efficient energy transfer to Yb3+, this material can be developed as spectral convertors to improve silicon solar cell photovoltaic conversion efficiency. (C)2013 Optical Society of America
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