Monolithically-grained perovskite solar cell with Mortise-Tenon structure for charge extraction balance

Fangfang Wang, Mubai Li, Qiushuang Tian, Riming Sun, Hongzhuang Ma, Hongze Wang, Jingxi Chang, Zihao Li, Haoyu Chen, Jiupeng Cao, Aifei Wang, Jingjin Dong, You Liu, Jinzheng Zhao, Ying Chu, Suhao Yan, Zichao Wu, Jiaxin Liu, Ya Li, Xianglin Chen, Ping Gao, Yue Sun, Tingting Liu, Wenbo Liu, Renzhi Li, Jianpu Wang, Yi-bing Cheng, Xiaogang Liu, Wei Huang () and Tianshi Qin ()
Additional contact information
Fangfang Wang: Nanjing Tech University (NanjingTech)
Mubai Li: Nanjing Tech University (NanjingTech)
Qiushuang Tian: Nanjing Tech University (NanjingTech)
Riming Sun: Nanjing Tech University (NanjingTech)
Hongzhuang Ma: Nanjing Tech University (NanjingTech)
Hongze Wang: Nanjing Tech University (NanjingTech)
Jingxi Chang: Nanjing Tech University (NanjingTech)
Zihao Li: Nanjing Tech University (NanjingTech)
Haoyu Chen: Nanjing Tech University (NanjingTech)
Jiupeng Cao: Nanjing Tech University (NanjingTech)
Aifei Wang: Nanjing Tech University (NanjingTech)
Jingjin Dong: Nanjing Tech University (NanjingTech)
You Liu: Nanjing Tech University (NanjingTech)
Jinzheng Zhao: Nanjing Tech University (NanjingTech)
Ying Chu: Nanjing Tech University (NanjingTech)
Suhao Yan: Nanjing Tech University (NanjingTech)
Zichao Wu: Nanjing Tech University (NanjingTech)
Jiaxin Liu: Nanjing Tech University (NanjingTech)
Ya Li: Nanjing Tech University (NanjingTech)
Xianglin Chen: Nanjing Tech University (NanjingTech)
Ping Gao: Nanjing Tech University (NanjingTech)
Yue Sun: Nanjing Tech University (NanjingTech)
Tingting Liu: Nanjing Tech University (NanjingTech)
Wenbo Liu: Nanjing Tech University (NanjingTech)
Renzhi Li: Nanjing Tech University (NanjingTech)
Jianpu Wang: Nanjing Tech University (NanjingTech)
Yi-bing Cheng: Wuhan University of Technology
Xiaogang Liu: National University of Singapore
Wei Huang: Nanjing Tech University (NanjingTech)
Tianshi Qin: Nanjing Tech University (NanjingTech)

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract Although the power conversion efficiency values of perovskite solar cells continue to be refreshed, it is still far from the theoretical Shockley-Queisser limit. Two major issues need to be addressed, including disorder crystallization of perovskite and unbalanced interface charge extraction, which limit further improvements in device efficiency. Herein, we develop a thermally polymerized additive as the polymer template in the perovskite film, which can form monolithic perovskite grain and a unique “Mortise-Tenon” structure after spin-coating hole-transport layer. Importantly, the suppressed non-radiative recombination and balanced interface charge extraction benefit from high-quality perovskite crystals and Mortise-Tenon structure, resulting in enhanced open-circuit voltage and fill-factor of the device. The PSCs achieve certified efficiency of 24.55% and maintain >95% initial efficiency over 1100 h in accordance with the ISOS-L-2 protocol, as well as excellent endurance according to the ISOS-D-3 accelerated aging test.

Date: 2023
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DOI: 10.1038/s41467-023-38926-3

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