Tb3+-Er3+ couples as spectral converters in NaYF4 for GaAs solar cells

	Tb3+-Er3+ couples as spectral converters in NaYF4 for GaAs solar cells
其他题名	论文其他题名
	Liu C. X.; Liu J. Y.; Zhang J. S.; Luo Y. S.; Wang L. J.
	2011
发表期刊	Journal of Physics D-Applied Physics
ISSN	0022-3727
卷号	44 期号:14
摘要	In order to reduce the thermal loss due to spectral mismatch of solar cell absorption, the quantum cutting with Tb3+-Er3+ couples as spectral converters is experimentally observed. One high-energy ultraviolet photon (Tb3+ F-7(6) -> L-5(1)) is quantumly cut into two lower energy photons: one in the near-infrared region (Er3+ I-4(9/2) -> I-4(15)) and the other in the blue region (Tb3+ D-5(4) -> F-7(6)), both of which can be efficiently absorbed by solar cells. A quantum efficiency, eta(QE), of up to 188% is calculated, which is close to the theoretical limit of 200%. The energy mismatch in the energy transfer from Tb3+ (L-5(1) -> D-5(4)) to Er3+ (I-4(9/2) -> I-4(15/2)) is 237 cm(-1), less than the phonon energy of 400 cm(-1) in NaYF4, making the energy transfer nearly resonant. The energy migration among Tb3+ donors is treated approximately by the diffusion model and the initial process of energy transfer among the Tb3+-Er3+ couples is found to be dipole-dipole interactions.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26077
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liu C. X.,Liu J. Y.,Zhang J. S.,et al. Tb3+-Er3+ couples as spectral converters in NaYF4 for GaAs solar cells[J]. Journal of Physics D-Applied Physics,2011,44(14).
APA	Liu C. X.,Liu J. Y.,Zhang J. S.,Luo Y. S.,&Wang L. J..(2011).Tb3+-Er3+ couples as spectral converters in NaYF4 for GaAs solar cells.Journal of Physics D-Applied Physics,44(14).
MLA	Liu C. X.,et al."Tb3+-Er3+ couples as spectral converters in NaYF4 for GaAs solar cells".Journal of Physics D-Applied Physics 44.14(2011).

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