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@ARTICLE{Yuan:1006591,
      author       = {Yuan, Ligang and Zhu, Weiya and Zhang, Yiheng and Li, Yuan
                      and Chan, Christopher C. S. and Qin, Minchao and Qiu,
                      Jianhang and Zhang, Kaicheng and Huang, Jiaxing and Wang,
                      Jiarong and Luo, Huiming and Zhang, Zheng and Chen, Ruipeng
                      and Liang, Weixuan and Wei, Qi and Wong, Kam Sing and Lu,
                      Xinhui and Li, Ning and Brabec, Christoph and Ding, Liming
                      and Yan, Keyou},
      title        = {{A} conformally bonded molecular interface retarded iodine
                      migration for durable perovskite solar cells},
      journal      = {Energy $\&$ environmental science},
      volume       = {16},
      number       = {3},
      issn         = {1754-5692},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2023-01732},
      pages        = {1597-1609},
      year         = {2023},
      abstract     = {State-of-the-art n–i–p perovskite solar cells (PSCs)
                      suffer from stability issues due to ionic interdiffusion.
                      Herein, by enlarging the indacenodithiophene π-bridge donor
                      (D′) to combine with the methoxy triphenylamine donor (D)
                      and benzothiadiazole acceptor (A), three linear molecules
                      termed L1, L2 and L3 with a D–A–D′–A–D structure
                      are developed as dopant-free hole transport materials
                      (HTMs). The π-bridge extension with active sites for
                      coordination leverages the intramolecular dipole effect and
                      intermolecular packing effect, resulting in a conformally
                      bonded ultrathin interface with compact and uniform coverage
                      (∼60 nm) to retard iodine migration and protect the buried
                      perovskite. The unencapsulated L3-PSC
                      (ITO/SnO2/perovskite/L3/MoO3/Au) achieved an impressive PCE
                      of $22.61\%$ (certified $21.79\%,$ 0.0525 cm2). Ultrafast
                      laser spectroscopy reveals that L-series molecules have a
                      sequential reduction of photoexcited energy disorder to
                      illustrate the structure–performance–stability
                      relationship. L3-PSC maintains over $85\%$ of the initial
                      efficiency after 500 h at 85 °C maximum power point
                      tracking (MPP) and enables the possibility of using small
                      molecules to stabilize n–i–p PSCs.},
      cin          = {IEK-11},
      ddc          = {690},
      cid          = {I:(DE-Juel1)IEK-11-20140314},
      pnm          = {1213 - Cell Design and Development (POF4-121) / 1212 -
                      Materials and Interfaces (POF4-121)},
      pid          = {G:(DE-HGF)POF4-1213 / G:(DE-HGF)POF4-1212},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000941368100001},
      doi          = {10.1039/D2EE03565K},
      url          = {https://juser.fz-juelich.de/record/1006591},
}