Insights into Ultrafast Carrier Dynamics in Perovskite Thin Films and Solar Cells,ACS Photonics

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Insights into Ultrafast Carrier Dynamics in Perovskite Thin Films and Solar Cells
ACS Photonics ( IF 6.5 ) Pub Date : 2020-06-26 , DOI: 10.1021/acsphotonics.0c00677
Chengbo Li ₁ , Aili Wang ₁ , Xiaoyu Deng ₁ , Shurong Wang ₁ , Yuan Yuan ₁ , Liming Ding ₂ , Feng Hao ₁

Affiliation

The charge carrier dynamics in hybrid perovskite solar cells (PSCs), especially the carrier generation, transfer, interface recombination, and collection, are in the femtosecond to millisecond range and are directly related to the final performance. Here the recent advances of the ultrafast dynamics of photoinduced charge carriers in perovskite thin films and PSCs are reviewed with an aim to the fundamental understanding from a microscopic level. The recent emerged ultrafast spectroscopy technologies are first presented. Starting with the electronic band structure that produced intense optical transitions and light harvesting, the physical characteristics are discussed, and the significants of regulation on these electronic dynamics are emphasized. Moreover, the carrier dynamics in recently emerged lead-free perovskites is also discussed. Finally, further prospects toward clarification of the relationship between the band-edge energy structure and the charge carrier dynamic process of PSCs are proposed.

中文翻译：

钙钛矿薄膜和太阳能电池中超快载流子动力学的见解

混合钙钛矿太阳能电池（PSC）中的电荷载流子动力学，尤其是载流子的产生，转移，界面重组和收集，在飞秒到毫秒的范围内，并且与最终性能直接相关。本文综述了钙钛矿薄膜和PSC中光诱导载流子的超快动力学的最新进展，旨在从微观层面进行基础理解。首先介绍了最近出现的超快光谱技术。从产生强烈的光学跃迁和光收集的电子能带结构开始，讨论了其物理特性，并强调了对这些电子动力学进行调节的重要意义。此外，还讨论了最近出现的无铅钙钛矿中的载流子动力学。最后，

更新日期：2020-08-19

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