Solvation‐Driven Grain Boundary Passivation Improving the Performance of Perovskite Solar Cells
Solvation‐Driven Grain Boundary Passivation Improving the Performance of Perovskite Solar Cells
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溶剂驱动的晶界钝化提高了Percent太阳能电池的性能
DOI：
10.1002/aenm.202303387
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发表时间：
2024-01
影响因子：
27.8
通讯作者：
Chunyan Deng;Lina Tan;Jihuai Wu;Yuqian Yang;Yitian Du;Qi Chen;Xia Chen;Liuxue Sun;Fuda Yu;Weihai Sun;Peng Gao;Zhang Lan
中科院分区：
文献类型：
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作者：
Chunyan Deng;Lina Tan;Jihuai Wu;Yuqian Yang;Yitian Du;Qi Chen;Xia Chen;Liuxue Sun;Fuda Yu;Weihai Sun;Peng Gao;Zhang Lan
The efficiency of perovskite solar cells (PSCs) is hindered by substantial defects within the grain boundaries (GBs) of polycrystalline perovskite films. Conventional post‐treatment strategies struggle to precisely repair these defects at GBs. Here, a targeted grain boundary passivation strategy through solvent effects by incorporating symmetrical biphenyl molecules is proposed, 4,4′‐diaminodiphenyl sulfone (DDS) and 4,4′‐sulfodiphenol (SDP), aiming to mitigate defects at GBs and optimize energy level arrangements through their electric dipole effects. Compared to the pristine device, the SDP‐modified device exhibits significant improvements, including a champion efficiency of 24.39% and an impressive fill factor, along with excellent operation stability. This work provides an effective and straightforward solution for improving the performance of PSCs.
