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Vapor-assisted deposition of highly efficient, stable black-phase FAPbI3 perovskite solar cells.
Lu, Haizhou; Liu, Yuhang; Ahlawat, Paramvir; Mishra, Aditya; Tress, Wolfgang R; Eickemeyer, Felix T; Yang, Yingguo; Fu, Fan; Wang, Zaiwei; Avalos, Claudia E; Carlsen, Brian I; Agarwalla, Anand; Zhang, Xin; Li, Xiaoguo; Zhan, Yiqiang; Zakeeruddin, Shaik M; Emsley, Lyndon; Rothlisberger, Ursula; Zheng, Lirong; Hagfeldt, Anders; Grätzel, Michael.
Afiliação
  • Lu H; Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
  • Liu Y; Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, Switzerland.
  • Ahlawat P; Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, Switzerland.
  • Mishra A; Laboratory of Computational Chemistry and Biochemistry, Institute of Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, Switzerland.
  • Tress WR; Laboratory of Magnetic Resonance, Institute of Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, Switzerland.
  • Eickemeyer FT; Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
  • Yang Y; Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, Switzerland.
  • Fu F; Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, P. R. China.
  • Wang Z; Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, CH-8600 Duebendorf, Switzerland.
  • Avalos CE; Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
  • Carlsen BI; Laboratory of Magnetic Resonance, Institute of Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, Switzerland.
  • Agarwalla A; Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
  • Zhang X; Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
  • Li X; Centre for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai 200433, P. R. China.
  • Zhan Y; Centre for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai 200433, P. R. China.
  • Zakeeruddin SM; Centre for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai 200433, P. R. China. yqzhan@fudan.edu.cn lrzheng@fudan.edu.cn anders.hagfeldt@epfl.ch michael.graetzel@epfl.ch.
  • Emsley L; Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, Switzerland.
  • Rothlisberger U; Laboratory of Magnetic Resonance, Institute of Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, Switzerland.
  • Zheng L; Laboratory of Computational Chemistry and Biochemistry, Institute of Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, Switzerland.
  • Hagfeldt A; Centre for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai 200433, P. R. China. yqzhan@fudan.edu.cn lrzheng@fudan.edu.cn anders.hagfeldt@epfl.ch michael.graetzel@epfl.ch.
  • Grätzel M; Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland. yqzhan@fudan.edu.cn lrzheng@fudan.edu.cn anders.hagfeldt@epfl.ch michael.graetzel@epfl.ch.
Science ; 370(6512)2020 10 02.
Article em En | MEDLINE | ID: mdl-33004488
ABSTRACT
Mixtures of cations or halides with FAPbI3 (where FA is formamidinium) lead to high efficiency in perovskite solar cells (PSCs) but also to blue-shifted absorption and long-term stability issues caused by loss of volatile methylammonium (MA) and phase segregation. We report a deposition method using MA thiocyanate (MASCN) or FASCN vapor treatment to convert yellow δ-FAPbI3 perovskite films to the desired pure α-phase. NMR quantifies MA incorporation into the framework. Molecular dynamics simulations show that SCN- anions promote the formation and stabilization of α-FAPbI3 below the thermodynamic phase-transition temperature. We used these low-defect-density α-FAPbI3 films to make PSCs with >23% power-conversion efficiency and long-term operational and thermal stability, as well as a low (330 millivolts) open-circuit voltage loss and a low (0.75 volt) turn-on voltage of electroluminescence.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Science Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Suíça
Texto completo
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XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Science Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Suíça