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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Yachao Du, Qingwen Tian,* Xiaoming Chang, Junjie Fang, Xiaojing Gu, Xilai He, Xiaodong Ren, Kui Zhao,* Shengzhong (Frank) Liu*, Advanced Materials. adma.202106750.
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Centimeter-Sized 2D Perovskitoid Single Crystals for Efficient X‑ray Photoresponsivity
Chuang Ma, Lili Gao,* Zhuo Xu, Xiaotong Li, Xin Song, Yucheng Liu, Tinghuan Yang, Haojin Li,
Yachao Du, Guangtao Zhao, Xinmei Liu, Mercouri G. Kanatzidis,* Shengzhong Frank Liu,* Kui Zhao*, Chem. Mater. 2022, 34, 4, 1699–1709. -
Yueling Su, Lu Zhang, Zicheng Ding,* Yi Zhang, Yin Wu, Yuwei Duan, Qiang Zhang, Jidong Zhang, Yanchun Han, Zijian Xu, Rui Zhang,* Kui Zhao, Shengzhong (Frank) Liu*, Advanced Energy Materials. aenm.202103940.
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Jing Lu,‡ Tinghuan Yang,‡ Tianqi Niu,‡ Nuo Bu, Yalan Zhang, Shiqiang Wang, Junjie Fang, Xiaoming Chang, Tao Luo, Jialun Wen, Yingguo Yang, Zicheng Ding,* Kui Zhao * Shengzhong (Frank) Liu *, Energy Environ. Sci., 2022,15, 1144-1155.
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Dongle Liu, Zicheng Ding,* Yin Wu, Shengzhong Frank Liu, Yanchun Han, and Kui Zhao*, Macromolecules 2022, 55, 1, 297–308.
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Yachao Du, Qingwen Tian,* Shiqiang Wang, Tinghuan Yang, Lei Yin, Hao Zhang, Weilun Cai, Yin Wu, Wenliang Huang, Lu Zhang, Kui Zhao,* Shengzhong (Frank) Liu*, Advanced Materials, 2023, 2, 2206451.
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Shumei Wang, Wenliang Huang, Xinmei Liu, Shiqiang Wang, Haochen Ye,1 Shen Yu,2 Xin Song, Zhanliu, Peijun Wang, Tinghuan Yang, Depeng Chu, Jing Gou, Mingjian Yuan, Lihua Chen, Baolian Su, Shengzhong (Frank) Liu, Kui Zhao,* Advanced Functional Materials 2022, 2210765.
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Yin Wu, Zicheng Ding,* Qiang Zhang, Xiao Liang, Hua Yang, Wenliang Huang, Yueling Su, Yi Zhang,
Hanlin Hu, Yanchun Han, Shengzhong Frank Liu, and Kui Zhao*, Macromolecules, 2022, 55, 8609.
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Chang-Feng Wang, Haojin Li, Qun Ji, Chuang Ma, Lang Liu, Heng-Yun Ye, Bo Cao, Guoliang Yuan, Hai-Feng Lu, Da-Wei Fu, Ming-Gang Ju,* Jinlan Wang, Kui Zhao,* Yi Zhang,* Advanced Functional Materials, 2022, 2205918.
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Water-Resistant Lead-Free Perovskitoid Single Crystal for Efficient X-Ray Detection
Chuang Ma, Haojin Li, Ming Chen, Yucheng Liu, Kui Zhao,* Shengzhong (Frank) Liu*, Advanced Functional Materials 2022, 2202160.