Chen Daqin, Wang Yuansheng, Yu Yunlong, Huang Ping, Weng Fangyi
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China.
Opt Lett. 2008 Aug 15;33(16):1884-6. doi: 10.1364/ol.33.001884.
Quantum cutting downconversion involving the emission of two near-infrared photons for each blue photon absorbed is realized in transparent glass ceramics with embedded Pr3+/Yb3+: beta-YF3 nanocrystals. On excitation of Pr3+ ions with a visible photon at 482 nm, Yb3+ ions emit two near-infrared photons at 976 nm through an efficient cooperative energy transfer from Pr3+ to Yb3+, with optimal quantum efficiency close to 200%. The development of the near-infrared quantum cutting transparent glass ceramic could open a route to enhance the energy efficiency of the silicon solar cell by converting one blue solar photon to two near-infrared ones.
在嵌入Pr3+/Yb3+：β-YF3纳米晶体的透明玻璃陶瓷中实现了量子切割下转换，即每吸收一个蓝光光子会发射两个近红外光子。用482nm的可见光光子激发Pr3+离子时，Yb3+离子通过从Pr3+到Yb3+的高效协同能量转移，在976nm处发射两个近红外光子，最佳量子效率接近200%。近红外量子切割透明玻璃陶瓷的发展可能会开辟一条途径，通过将一个蓝色太阳光子转换为两个近红外光子来提高硅太阳能电池的能量效率。
