科研之友
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摘要
In order to reduce the thermalization losses in solar cells, down-conversion of blue photons into near infra-red photons is a promising solution. In the present paper, we analyse the energy transfer processes between Pr3+ and Yb3+ in NaLaF4 and we show that an efficient quantum-cutting process occurs. Nevertheless, we also show that a back transfer from Yb3+ toward the (1)G(4) level of Pr3+ ion leading to emission beyond 1 mu m reduces the potentiality of this material as a quantum cutter for Si solar cells.
- 出版日期2013-12
