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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Shumei Wang, Chuang Ma, Xinmei Liu, Wenliang Huang, Tinghuan Yang, Chenxing Li, Haochen Ye, Zhan Liu, Lei Yin, Ningyi Yuan, Jianning Ding, Lihua Chen, Kui Zhao, Adv. Opt. Mater. 2023, adom.202301786.
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Wenliang Huang, Xinmei Liu, Zicheng Ding, Zhongli Wang, Chenhui Xu, Ruipeng Li, Shumei Wang, Yin Wu, Ru Qin, Yang Han, Yanhou Geng, Shengzhong Frank Liu, Yanchun Han, Kui Zhao, Nano Lett. 2023, acs.nanolett.3c04248.
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Chuang Ma, Shumei Wang, Lili Gao, Zhuo Xu, Xin Song, Tinghuan Yang, Haojin Li, Xinmei Liu, Shengzhong (Frank) Liu, Kui Zhao, Adv. Opt. Mater. 2023, adom.202202449.
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Qingyue Cui, Xinmei Liu, Nan Li, Hanqing Zeng, Depeng Chu, Haojin Li, Xin Song, Zhuo Xu, Yanping Liu, Haiming Zhu, Kui Zhao, Shengzhong(Frank) Liu, Small. 2023, smll.202308945.
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Flexible Large-Scale Self-Driven Perovskite X-ray Detector by Precise Heterogeneous Integration
Haojin Li, Xinmei Liu, Tinghuan Yang, Chuang Ma*, Yachao Du, Peng Xu, Lu Zhang, Xin Song, Qingyue Cui, Shengli Zhao, Zhou Yang, Shengzhong Frank Liu, Shengye Jin*, and Kui Zhao*, ACS Energy Lett. 2023, acsenergylett.3c02152.
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Yachao Du, Qingwen Tian, Shiqiang Wang, Lei Yin, Chuang Ma, Zhiteng Wang, Lei Lang, Yingguo Yang, Kui Zhao, Shengzhong (Frank) Liu, Advanced Materials. 2023, adma.202307583.
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Highly Stretchable Conjugated Polymer/Elastomer Blend Films with Sandwich Structure
Ru Qin, Yin Wu, Zicheng Ding, Rui Zhang, Jifa Yu, Wenliang Huang, Dongle Liu, Guanghao Lu, Shengzhong (Frank) Liu, Kui Zhao, Yanchun Han, Macromolecular Rapid Communications. 2023, marc.202300240.
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Nan Wu, Tinghuan Yang, Zhichao Wang, Yin Wu, Yajie Wang, Chuang Ma, Haojin Li, Yachao Du, Di Zhao, Shuang Wang, Pengchi Liu, Wenliang Huang, Xiaodong Ren, Shengzhong (Frank) Liu, Kui Zhao*, Advanced Materials. 2023, adma.202304809.
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Shiqiang Wang,# Tinghuan Yang,# Yingguo Yang,# Yachao Du, Wenliang Huang, Liwei Cheng, Haojin Li, Peijun Wang, Yajie Wang, Yi Zhang, Chuang Ma, Pengchi Liu, Guangtao Zhao, Zicheng Ding, Shengzhong (Frank) Liu, Kui Zhao* Advanced Materials, 2023. adma.202305314.
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Crystallization control for ambient printed FA-based lead triiodide perovskite solar cells
Lei Yin, Wenliang Huang, Junjie Fang, Zicheng Ding, Chengkai Jin, Yachao Du, Lei Lang, Tinghuan Yang, Shumei Wang, Weilun Cai, Chou Liu, Guangtao Zhao, Yingguo Yang, Shengzhong (Frank) Liu, Tongle Bu, Kui Zhao*, Advanced Materials, 2023, adma.202303384.