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Femtosecond-Laser-Induced Precipitation of CsPbBr3 Perovskite Nanocrystals in Glasses for Solar Spectral Conversion
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-01-10 , DOI: 10.1021/acsanm.9b02362 Yuzhou Hu 1 , Wenchao Zhang 1 , Ying Ye 1 , Zhiyong Zhao 1 , Chao Liu 1
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-01-10 , DOI: 10.1021/acsanm.9b02362 Yuzhou Hu 1 , Wenchao Zhang 1 , Ying Ye 1 , Zhiyong Zhao 1 , Chao Liu 1
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Inorganic perovskite quantum dots (QDs) and nanocrystals (NCs) have attracted much attention in recent years because of their high photoluminescence (PL) quantum yield (QY), narrow full width at half-maximum, and wide tunability across the whole visible range. In this work, space- and size-controlled precipitation of CsPbBr3 perovskite NCs was realized through a femtosecond laser-direct-writing method. Precipitation of CsPbBr3 NCs in glasses was confirmed by energy-dispersive spectroscopy, transmission electron microscopy analysis, and PL. Growth of CsPbBr3 perovskite NCs in glasses was modulated by femtosecond laser irradiation parameters such as the repetition rate, pulse energy, and scanning rate, and PL in the range spanning from blue to green was achieved. With the well-designed arrangement of CsPbBr3 NCs and the reduction of self-absorption emission, a solar concentrator fabricated by femtosecond laser irradiation can realize spectral conversion and enhance the quantum efficiency of solar cells.
中文翻译：
飞秒激光诱导玻璃中CsPbBr 3钙钛矿纳米晶体的沉淀，用于太阳光谱转换
无机钙钛矿量子点（QDs）和纳米晶体（NCs）近年来引起了很多关注，因为它们具有高的光致发光（PL）量子产率（QY），半峰全宽和整个可见光范围内的可调性。在这项工作中，通过飞秒激光直接写入方法实现了对CsPbBr 3钙钛矿型NCs的空间和大小控制的沉淀。通过能量色散光谱，透射电子显微镜分析和PL证实了玻璃中CsPbBr 3 NCs的沉淀。CsPbBr 3的生长通过飞秒激光辐照参数（例如重复频率，脉冲能量和扫描速度）对玻璃中的钙钛矿NC进行调制，并实现了从蓝色到绿色的PL范围。通过精心设计的CsPbBr 3 NC的排列和减少自吸收发射，通过飞秒激光辐照制造的太阳能集中器可以实现光谱转换并提高太阳能电池的量子效率。
更新日期：2020-01-10
中文翻译：
飞秒激光诱导玻璃中CsPbBr 3钙钛矿纳米晶体的沉淀，用于太阳光谱转换
无机钙钛矿量子点（QDs）和纳米晶体（NCs）近年来引起了很多关注，因为它们具有高的光致发光（PL）量子产率（QY），半峰全宽和整个可见光范围内的可调性。在这项工作中，通过飞秒激光直接写入方法实现了对CsPbBr 3钙钛矿型NCs的空间和大小控制的沉淀。通过能量色散光谱，透射电子显微镜分析和PL证实了玻璃中CsPbBr 3 NCs的沉淀。CsPbBr 3的生长通过飞秒激光辐照参数（例如重复频率，脉冲能量和扫描速度）对玻璃中的钙钛矿NC进行调制，并实现了从蓝色到绿色的PL范围。通过精心设计的CsPbBr 3 NC的排列和减少自吸收发射，通过飞秒激光辐照制造的太阳能集中器可以实现光谱转换并提高太阳能电池的量子效率。
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