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Exciton-Scissoring Perfluoroarenes Trigger Photomultiplication in Full Color Organic Image Sensors.
Kim, Juhee; Kweon, Hyukmin; Lee, Myeongjae; Kang, Mingyun; Lee, Sangjun; An, Sanghyeok; Lee, Wonjong; Choi, Seokran; Choi, Hanbin; Seong, Yujin; Ham, Hyobin; Cha, Hyojung; Lim, Jongchul; Kim, Do Hwan; Kim, BongSoo; Chung, Dae Sung.
Afiliação
  • Kim J; Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
  • Kweon H; Department of Chemical Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
  • Lee M; Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea.
  • Kang M; Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
  • Lee S; Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
  • An S; Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
  • Lee W; Graduate School of Energy Science & Technology, Chungnam National University, Daejeon, 34134, Republic of Korea.
  • Choi S; Department of Chemical Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
  • Choi H; Department of Chemical Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
  • Seong Y; Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
  • Ham H; Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
  • Cha H; Department of Hydrogen and Renewable Energy, Kyungpook National University, Daegu, 41566, Republic of Korea.
  • Lim J; Graduate School of Energy Science & Technology, Chungnam National University, Daejeon, 34134, Republic of Korea.
  • Kim DH; Department of Chemical Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
  • Kim B; Institute of Nano Science and Technology, Hanyang University, Seoul, 04763, Republic of Korea.
  • Chung DS; Clean-Energy Research Institute, Hanyang University, Seoul, 04763, Republic of Korea.
Adv Mater ; 35(45): e2302786, 2023 Nov.
Article em En | MEDLINE | ID: mdl-37421369
ABSTRACT
An unprecedented but useful functionality of perfluoroarenes to enable exciton scissoring in photomultiplication-type organic photodiodes (PM-OPDs) is reported. Perfluoroarenes that are covalently connected to polymer donors via a photochemical reaction enable the demonstration of high external quantum efficiency and B-/G-/R-selective PM-OPDs without the use of conventional acceptor molecules. The operation mechanism of the suggested perfluoroarene-driven PM-OPDs, how covalently bonded polymer donorperfluoroarene PM-OPDs can perform as effectively as polymer donorfullerene blend-based PM-OPDs, is investigated. By employing a series of arenes and conducting steady-state/time-resolved photoluminescence and transient absorption spectroscopy analyses, it is found that interfacial band bending between the perfluoroaryl group and polymer donor is responsible for exciton scissoring and subsequent electron trapping, which induces photomultiplication. Owing to the acceptor-free and covalently interconnected photoactive layer in the suggested PM-OPDs, superior operational and thermal stabilities are observed. Finally, finely patterned B-/G-/R-selective PM-OPD arrays that enable the construction of highly sensitive passive matrix-type organic image sensors are demonstrated.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article