Additive-Induced Synergies of Defect Passivation and Energetic Modification toward Highly Efficient Perovskite Solar Cells

被引:50
|
作者
Xiong, Shaobing [1 ]
Hou, Zhangyu [1 ]
Dong, Wei [2 ]
Li, Danqin [1 ]
Yang, Jianming [1 ]
Bai, Ruirong [3 ]
Wu, Yuning [3 ]
Li, Dong [4 ]
Wu, Hongbo [5 ]
Ma, Zaifei [5 ]
Xu, Jianhua [4 ]
Liu, Xianjie [6 ]
Bao, Qinye [1 ,7 ]
机构
[1] East China Normal Univ, Sch Phys & Elect Sci, Shanghai 200241, Peoples R China
[2] East China Normal Univ, Shanghai Key Lab Magnet Resonance, Shanghai 200241, Peoples R China
[3] East China Normal Univ, Key Lab Polar Mat & Devices, Shanghai 200241, Peoples R China
[4] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200241, Peoples R China
[5] Donghua Univ, Ctr Adv Low Dimens Mat, Shanghai 201620, Peoples R China
[6] Linkoping Univ, ITN, Lab Organ Elect, S-60174 Norrkoping, Sweden
[7] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
基金
美国国家科学基金会;
关键词
defect passivation; energetics; nonradiative recombination; perovskite solar cells; synergy; RECOMBINATION; TRIHALIDE; EMERGENCE; LENGTHS;
D O I
10.1002/aenm.202101394
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Defect passivation via additive and energetic modification via interface engineering are two effective strategies for achieving high-performance perovskite solar cells (PSCs). Here, the synergies of pentafluorophenyl acrylate when used as additive, in which it not only passivates surface defect states but also simultaneously modifies the energetics at the perovskite/Spiro-OMeTAD interface to promote charge transport, are shown. The additive-induced synergy effect significantly suppresses both defect-assisted recombination and interface carrier recombination, resulting in a device efficiency of 22.42% and an open-circuit voltage of 1.193 V with excellent device stability. The two photovoltaic parameters are among the highest values for polycrystalline CsFormamidinium/Methylammonium (FAMA)/FAMA based n-i-p structural PSCs using low-cost silver electrodes reported to date. The findings provide a promising approach by choosing the dual functional additive to enhance efficiency and stability of PSCs.
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页数:8
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