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Dithieno[3,2-b:2',3'-d]pyrrole Cored p-Type Semiconductors Enabling 20 % Efficiency Dopant-Free Perovskite Solar Cells.
Zhou, Jie; Yin, Xinxing; Dong, Zihao; Ali, Amjad; Song, Zhaoning; Shrestha, Niraj; Bista, Sandip Singh; Bao, Qinye; Ellingson, Randy J; Yan, Yanfa; Tang, Weihua.
Afiliación
  • Zhou J; School of Chemical Engineering, Nanjing University and Science and Technology, Nanjing, 210094, China.
  • Yin X; School of Chemical Engineering, Nanjing University and Science and Technology, Nanjing, 210094, China.
  • Dong Z; School of Chemical Engineering, Nanjing University and Science and Technology, Nanjing, 210094, China.
  • Ali A; School of Chemical Engineering, Nanjing University and Science and Technology, Nanjing, 210094, China.
  • Song Z; Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
  • Shrestha N; Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
  • Bista SS; Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
  • Bao Q; Key Laboratory of Polar Materials and Devices, Department of Optoelectronics, East China Normal University, Shanghai, 200241, China.
  • Ellingson RJ; Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
  • Yan Y; Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
  • Tang W; School of Chemical Engineering, Nanjing University and Science and Technology, Nanjing, 210094, China.
Angew Chem Int Ed Engl ; 58(39): 13717-13721, 2019 Sep 23.
Article en En | MEDLINE | ID: mdl-31286608
Organic p-type semiconductors with tunable structures offer great opportunities for hybrid perovskite solar cells (PVSCs). We report herein two dithieno[3,2-b:2',3'-d]pyrrole (DTP) cored molecular semiconductors prepared through π-conjugation extension and an N-alkylation strategy. The as-prepared conjugated molecules exhibit a highest occupied molecular orbital (HOMO) level of -4.82 eV and a hole mobility up to 2.16×10-4  cm2 V-1 s-1 . Together with excellent film-forming and over 99 % photoluminescence quenching efficiency on perovskite, the DTP based semiconductors work efficiently as hole-transporting materials (HTMs) for n-i-p structured PVSCs. Their dopant-free MA0.7 FA0.3 PbI2.85 Br0.15 devices exhibit a power conversion efficiency over 20 %, representing one of the highest values for un-doped molecular HTMs based PVSCs. This work demonstrates the great potential of using a DTP core in designing efficient semiconductors for dopant-free PVSCs.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2019 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2019 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania