Ion-modulated radical doping of spiro-OMeTAD for more efficient and stable perovskite solar cells.

Zhang, Tiankai; Wang, Feng; Kim, Hak-Beom; Choi, In-Woo; Wang, Chuanfei; Cho, Eunkyung; Konefal, Rafal; Puttisong, Yuttapoom; Terado, Kosuke; Kobera, Libor; Chen, Mengyun; Yang, Mei; Bai, Sai; Yang, Bowen; Suo, Jiajia; Yang, Shih-Chi; Liu, Xianjie; Fu, Fan; Yoshida, Hiroyuki; Chen, Weimin M; Brus, Jiri; Coropceanu, Veaceslav; Hagfeldt, Anders; Brédas, Jean-Luc; Fahlman, Mats; Kim, Dong Suk; Hu, Zhangjun; Gao, Feng

Zhang, Tiankai; Wang, Feng; Kim, Hak-Beom; Choi, In-Woo; Wang, Chuanfei; Cho, Eunkyung; Konefal, Rafal; Puttisong, Yuttapoom; Terado, Kosuke; Kobera, Libor; Chen, Mengyun; Yang, Mei; Bai, Sai; Yang, Bowen; Suo, Jiajia; Yang, Shih-Chi; Liu, Xianjie; Fu, Fan; Yoshida, Hiroyuki; Chen, Weimin M; Brus, Jiri; Coropceanu, Veaceslav; Hagfeldt, Anders; Brédas, Jean-Luc; Fahlman, Mats; Kim, Dong Suk; Hu, Zhangjun; Gao, Feng.

Afiliación

Zhang T; Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183 Linköping, Sweden.
Wang F; Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183 Linköping, Sweden.
Kim HB; Korea Institute of Energy Research (KIER), Ulsan, Republic of Korea.
Choi IW; Korea Institute of Energy Research (KIER), Ulsan, Republic of Korea.
Wang C; Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 60174 Norrköping, Sweden.
Cho E; Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721, USA.
Konefal R; Institute of Macromolecular Chemistry of the Czech Academy of Sciences, 162 06 Prague 6, Czech Republic.
Puttisong Y; Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183 Linköping, Sweden.
Terado K; Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
Kobera L; Institute of Macromolecular Chemistry of the Czech Academy of Sciences, 162 06 Prague 6, Czech Republic.
Chen M; Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183 Linköping, Sweden.
Yang M; Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183 Linköping, Sweden.
Bai S; Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183 Linköping, Sweden.
Yang B; Laboratory of Photomolecular Science (LSPM), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
Suo J; Department of Chemistry, Ångström Laboratory, Uppsala University, SE-751 20 Uppsala, Sweden.
Yang SC; Laboratory of Photomolecular Science (LSPM), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
Liu X; Department of Chemistry, Ångström Laboratory, Uppsala University, SE-751 20 Uppsala, Sweden.
Fu F; Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, CH-8600 Duebendorf, Switzerland.
Yoshida H; Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 60174 Norrköping, Sweden.
Chen WM; Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, CH-8600 Duebendorf, Switzerland.
Brus J; Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
Coropceanu V; Molecular Chirality Research Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
Hagfeldt A; Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183 Linköping, Sweden.
Brédas JL; Institute of Macromolecular Chemistry of the Czech Academy of Sciences, 162 06 Prague 6, Czech Republic.
Fahlman M; Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721, USA.
Kim DS; Laboratory of Photomolecular Science (LSPM), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
Hu Z; Department of Chemistry, Ångström Laboratory, Uppsala University, SE-751 20 Uppsala, Sweden.
Gao F; Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721, USA.

Science ; 377(6605): 495-501, 2022 07 29.

Article en En | MEDLINE | ID: mdl-35901165

ABSTRACT

ABSTRACT

Record power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) have been obtained with the organic hole transporter 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenyl-amine)9,9'-spirobifluorene (spiro-OMeTAD). Conventional doping of spiro-OMeTAD with hygroscopic lithium salts and volatile 4-tert-butylpyridine is a time-consuming process and also leads to poor device stability. We developed a new doping strategy for spiro-OMeTAD that avoids post-oxidation by using stable organic radicals as the dopant and ionic salts as the doping modulator (referred to as ion-modulated radical doping). We achieved PCEs of >25% and much-improved device stability under harsh conditions. The radicals provide hole polarons that instantly increase the conductivity and work function (WF), and ionic salts further modulate the WF by affecting the energetics of the hole polarons. This organic semiconductor doping strategy, which decouples conductivity and WF tunability, could inspire further optimization in other optoelectronic devices.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2022 Tipo del documento: Article País de afiliación: Suecia