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Surface Reconstruction of Halide Perovskites During Post-treatment.
Tan, Shaun; Huang, Tianyi; Yavuz, Ilhan; Wang, Rui; Weber, Marc H; Zhao, Yepin; Abdelsamie, Maged; Liao, Michael E; Wang, Hao-Cheng; Huynh, Kenny; Wei, Kung-Hwa; Xue, Jingjing; Babbe, Finn; Goorsky, Mark S; Lee, Jin-Wook; Sutter-Fella, Carolin M; Yang, Yang.
Afiliación
  • Tan S; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, California 90095, United States.
  • Huang T; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Yavuz I; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, California 90095, United States.
  • Wang R; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Weber MH; Department of Physics, Marmara University, 34722, Ziverbey, Istanbul, Turkey.
  • Zhao Y; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, California 90095, United States.
  • Abdelsamie M; Center for Materials Research, Washington State University, Pullman, Washington 99164, United States.
  • Liao ME; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, California 90095, United States.
  • Wang HC; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Huynh K; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, California 90095, United States.
  • Wei KH; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.
  • Xue J; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, California 90095, United States.
  • Babbe F; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.
  • Goorsky MS; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, California 90095, United States.
  • Lee JW; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Sutter-Fella CM; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, California 90095, United States.
  • Yang Y; SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nanoengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
J Am Chem Soc ; 143(18): 6781-6786, 2021 May 12.
Article en En | MEDLINE | ID: mdl-33915050
ABSTRACT
Postfabrication surface treatment strategies have been instrumental to the stability and performance improvements of halide perovskite photovoltaics in recent years. However, a consensus understanding of the complex reconstruction processes occurring at the surface is still lacking. Here, we combined complementary surface-sensitive and depth-resolved techniques to investigate the mechanistic reconstruction of the perovskite surface at the microscale level. We observed a reconstruction toward a more PbI2-rich top surface induced by the commonly used solvent isopropyl alcohol (IPA). We discuss several implications of this reconstruction on the surface thermodynamics and energetics. Particularly, our observations suggest that IPA assists in the adsorption process of organic ammonium salts to the surface to enhance their defect passivation effects.
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Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos