Abstract:
High-quality and uniform self-assembled molecule (SAM) films are critical for the controllable fabrication of high-performance inverted flexible perovskite solar cells (F-PSCs). However, solution-processed SAMs suffer from poor surface coverage and inadequate chemical anchoring on conducting substrates, especially for flexible substrates with high roughness, compromising the charge transport efficiency and device stability. Herein, we introduce thermal evaporation for depositing carbazole-phosphonic SAM films and establish the correlations between molecular configurations and surface properties. Vacuum-evaporated SAMs exhibit enhanced substrate coverage and surface wettability compared to solution-processed counterparts through the regulated molecular packing. The increased surface energy of vacuum-evaporated SAM films accelerates perovskite nucleation kinetics, balances growth rates across the films, and optimizes interfacial contact quality. Molecular configuration tailoring in the SAM backbones further refines the morphological quality and energetic alignment at the buried interface, thus promoting efficient charge transport and reduced non-radiative recombination loss. As a result, the optimized devices using vacuum-evaporated SAM films achieve an impressive power conversion efficiency (PCE) of 25.47% (certified 25.38%), among the highest PCEs reported for F-PSCs. Furthermore, the optimized devices demonstrate enhanced mechanical durability and operational stability, underscoring a practical methodology route toward efficient and stable F-PSCs.
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Ru Qin, Yin Wu, Zicheng Ding, Pengcheng Li, Zhihua Zhuang, Ruipeng Li, Wenliang Huang, Zhaomin Gao, Jiayi Hua, Shengzhong Frank Liu, Yanchun Han, Kui Zhao, Polymer, 2024, 127734.
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Interlayer reinforcement for improved mechanical reliability for wearable perovskite solar cells
Weilun Cai, Pengchen Zou, shigi rong, Hui Wang, Xin Chen, ZhengZhang, yajie wang, Chou Liu, Tinghuan Yang, TiangiNiu, Shengye Jin, Wenming Tian, Jianxi Yao, Shengzhong FrankLiu and Kui zhao, Energy & Environmental Science, 2024, D4EE03503H.
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Ambient scalable fabrication of high-performance flexible perovskite solar cells
Pengchi Liu, Hui Wang, Tianqi Niu, Lei Yin, Yachao Du, Lei Lang, Zheng Zhang, Yongchao Tu, Xiujie Liu, Xin Chen, shuang Wang, Nan Wu, Ru Qin, Likun Wang, Shaoan Yang, Chunfu Zhang, Xu Pan, Shengzhong Frank Liu, Kui Zhao, Energy & Environmental Science, 2024, D4EE02925A.
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Xin Chen, Weilun Cai, Tianqi Niu, Hui Wang, Chou Liu, Zheng Zhang, Yachao Du, Shuang Wang, Yang Cao, Pengchi Liu, Wenliang Huang, Chuang Ma, Ben Yang, Shengzhong (Frank) Liu, Kui Zhao, Energy & Environmental Science, 2024, d4ee02279c.
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Wearable Photoferroelectric Perovskite X-Ray Detectors
Haojin Li, Chang-feng Wang, Qing-feng Luo, Chuang Ma, Jing Zhang, Ri Zhao, Tinghuan Yang, Yachao Du, Xin Chen, Telun Li, Xinmei Liu, Xin Song, Ye Yang, Zhou Yang, Shengzhong (Frank) Liu, Yi Zhang, Kui Zhao, Adavanced Materials, 2024, adma.202407693.
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Yajie Wang, Tinghuan Yang, Weilun Cai, Peng Mao, Yang Yang, Nan Wu, Chou Liu, Shiqiang Wang, Yachao Du, Wenliang Huang, Guangtao Zhao, Zicheng Ding, Ningyi Yuan, Jianning Ding, Yufei Zhong, Shengzhong (Frank) Liu, Kui Zhao, Adavanced Materials, 2024, adma.202312014.
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Chou Liu,Tinghuan Yang,Weilun Cai, Yajie Wang, Xin Chen, Shumei Wang, Wenliang Huang, Yachao Du, Nan Wu, Zhichao Wang, YangYang, Jiangshan Feng, Tianqi Niu, Zicheng Ding, Kui Zhao, Adavanced Materials, 2024, adma.202311562.
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Biocompatible Metal-Free Perovskite Membranes for Wearable X-ray Detectors
Xinmei Liu, Qingyue Cui, Haojin Li, Shumei Wang, Qi Zhang, Wenliang Huang, Chou Liu, Weilun Cai, Telun Li, Zhou Yang, Chuang Ma, Lixia Ren, Shengzhong Frank Liu, Kui Zhao, ACS Appl. Mater. Interfaces. 2024, acsami.4c01069.
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“One‐Click Restart” Recycling of Metal‐Free Perovskite X‐ray Detectors
Haojin Li, Telun Li, Chuang Ma, Xinmei Liu, Lei Lang, Tinghuan Yang, Xin Song, Qingyue Cui, Zhou Yang, Shengzhong (Frank) Liu, Kui Zhao, Adavanced Materials, 2024, adma.202400783.
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High hardness metal-free perovskite based on hexamethylenetetramine for efficient X-ray detection
Xin Song, Telun Li, Haojin Li, Shuyi Lin, Jun Yin, Kui Zhao, Sci. China Mater. 2024.