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Over 15% Efficiency in Ternary Organic Solar Cells by Enhanced Charge Transport and Reduced Energy Loss.
Wang, Hongtao; Zhang, Zhuohan; Yu, Jiangsheng; Lin, Po-Chen; Chueh, Chu-Chen; Liu, Xin; Guang, Shun; Qu, Shenya; Tang, Weihua.
Afiliação
  • Wang H; School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
  • Zhang Z; School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
  • Yu J; School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
  • Lin PC; MIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
  • Chueh CC; Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
  • Liu X; Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
  • Guang S; School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
  • Qu S; MIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
  • Tang W; School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
ACS Appl Mater Interfaces ; 12(19): 21633-21640, 2020 May 13.
Article em En | MEDLINE | ID: mdl-32314906
In this study, an efficient ternary bulk-heterojunction (BHJ) organic solar cell (OSC) is demonstrated by incorporating two acceptors, PC61BM and ITC6-4F, with a polymer donor (PM6). This reveals that the addition of PC61BM not only enhances the electron mobility of the derived BHJ blend but also facilitates exciton dissociation, resulting in a more balanced charge transport alongside with reduced trap-assisted charge recombination. Consequently, as compared to the pristine PM6/ITC6-4F device, the optimal ternary OSC is revealed to deliver an improved power conversion efficiency (PCE) of 15.11% with a boosted JSC, VOC, and fill factor (FF) simultaneously. The resultant VOC and FF are among the highest values recorded in the literature for the ternary OSCs with a PCE exceeding 15%. This result thus suggests that besides improving the charge transport characteristics in devices, incorporating a fullerene derivative as part of the acceptor can also improve the resultant VOC, which can reduce the energy loss to realize efficient organic photovoltaics.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article