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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Dounya Barrit,* Yalan Zhang, Tinghuan Yang, Ming-Chun Tang, Ruipeng Li, Detlef-M. Smilgies, Shengzhong (Frank) Liu, Thomas D. Anthopoulos,* Aram Amassian,* and Kui Zhao*, Solar RRL.
2020, 00668. -
Editorial: Polymer Solar Cells: Molecular Design and Microstructure Control
Jiangang Liu*, Ergang Wang,* and Kui Zhao,* Frontiers in Chemistry . 2020, 8, 697
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Ultrastable perovskite-zeolite composite enabled by encapsulation and in situ passivation
Peijun Wang; Bolun Wang; Yucheng Liu; Lin Li; Hua Zhao; Yonghua Chen; Jiyang Li; Shengzhong (Frank) Liu*; Kui Zhao*, Angew Chem Int Ed, 2020, 14, 23100-23106.
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Printable CsPbI3 Perovskite Solar Cells with PCE of 19% via an Additive Strategy
Xiaoming Chang, Junjie Fang, Yuanyuan Fan, Tao Luo,1 Hang Su, Yalan Zhang, Jing Lu, Leonidas Tsetseris, Thomas D. Anthopoulos,* Shengzhong (Frank) Liu,* Kui Zhao*, Adv. Mater. 2020, 2001243
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Ming-Chun Tang*, Yuanyuan Fan, Dounya Barrit, Ruipeng Li, Hoang X. Dang, Siyuan Zhang, Timothy Magnanelli, Nhan V. Nguyen, Edwin J. Heilweil, Christina A. Hacker, Detlef-M. Smilgies, Kui Zhao*, Aram Amassian* and Thomas D. Anthopoulos*, Solar RRL 2020, 00272.
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Yucheng Liu, Zhuo Xu, Zhou Yang, Yunxia Zhang, Jian Cui, Yihui He, Haochen Ye, Kui Zhao, Huaming Sun, Rui Lu, Ming Liu, Mercouri G.Kanatzidis, Shengzhong (Frank)Liu,* Matter 2020, 04, 017.
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Ming-Chun Tang‡, Yuanyuan Fan‡, Dounya Barrit, Ruipeng Li, Siyuan Zhang, Timothy Magnanelli, Nhan V. Nguyen, Edwin J. Heilweil, Christina A. Hacker, Detlef-M. Smilgies, Kui Zhao,* Aram Amassian,* and Thomas D. Anthopoulos,* , Solar RRL. 2020, 10.1002.
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Yue Shen,† Yucheng Liu,† Haochen Ye, Yiting Zheng, Qi Wei, Yingdong Xia, Yonghua Chen,* Kui Zhao,* Wei Huang, Shengzhong (Frank) Liu,*, Angew. Chem. Int. Ed. 2020, 59, 14896–14902.
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Ming-Chun Tang,‡ Yuanyuan Fan,‡ Dounya Barrit, Xiaoming Chang, Hoang X. Dang, Ruipeng Li, Kai Wang, Detlef-M. Smilgies, Shengzhong (Frank) Liu, Stefaan De Wolf, Thomas D. Anthopoulos,* Kui Zhao* and Aram Amassian*, J. Mater. Chem. A, 2020, 8, 1095.
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Dounya Barrit, Peirui Cheng, Kasra Darabi, Ming-Chun Tang, Detlef-M. Smilgies, Shengzhong (Frank) Liu, Thomas D. Anthopoulos,* Kui Zhao,* and Aram Amassian*, Adv. Funct. Mater. 2020, 30, 1907442.