Custom Molecular Design of Ligands for Perovskite Photovoltaics,Accounts of Materials Research

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Custom Molecular Design of Ligands for Perovskite Photovoltaics
Accounts of Materials Research ( IF 14.0 ) Pub Date : 2021-10-06 , DOI: 10.1021/accountsmr.1c00099
Meifang Yang ₁ , Tian Tian ₁ , Wenhuai Feng ₁ , Lianzhou Wang ₂ , Wu-Qiang Wu ₁

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Perovskite photovoltaics have witnessed overwhelming success owing to their high power conversion efficiency, low voltage deficit, sensitive photoelectric response and good operational stability. However, solution-processed, polycrystalline perovskite films inevitably contain a high density of crystallographic defects, such as uncoordinated ions and dangling bonds at the surfaces and grain boundaries, which can result in charge recombination, thus causing energy loss and impaired device performance. These intrinsic imperfections can be remedied through a chemically induced intermarriage between halide perovskites of soft crystallographic nature and judiciously designed exotic ligand molecules. Utilizing rational molecular design of the component moieties, i.e., the core and tail functional groups, the ligand molecules can be endowed with both more comprehensive and salient advantages to further boost device performance, thus setting perovskite photovoltaics on course for a more prosperous future.

中文翻译：

钙钛矿光伏配体的定制分子设计

钙钛矿光伏由于其高功率转换效率、低电压赤字、灵敏的光电响应和良好的运行稳定性而取得了压倒性的成功。然而，溶液处理的多晶钙钛矿薄膜不可避免地含有高密度的晶体缺陷，例如表面和晶界处的不配位离子和悬空键，这会导致电荷复合，从而导致能量损失和器件性能受损。这些内在缺陷可以通过软晶体学性质的卤化物钙钛矿和精心设计的外来配体分子之间的化学诱导通婚来弥补。利用组分部分的合理分子设计，即核心和尾部官能团，

更新日期：2021-10-06

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