High Performance All-Polymer Photodetector Comprising a Donor–Acceptor–Acceptor Structured Indacenodithiophene–Bithieno[3,4- c ]Pyrroletetrone Copolymer

Abstract : The synthesis of an acceptor polymer PIDT- 2TPD, comprising indacenodithiophene (IDT) as the electron-rich unit and an interconnected bithieno[3,4-c]- pyrrole-4,4′,6,6′-tetrone (2TPD) as the electron-deficient unit, and its application for all-polymer photodetectors is reported. The optical, electrochemical, charge transport, and device properties of a blend of poly(3-hexylthiophene) and PIDT-2TPD are studied. The blend shows strong complementary absorption and balanced electron and hole mobility, which are desired properties for a photoactive layer. The device exhibits dark current density in the order of 10exp−5 mA/ cm2, external quantum efficiency broadly above 30%, and nearly planar detectivity over the entire visible spectral range (maximum of 1.1 × 10exp12 Jones at 610 nm) under −5 V bias. These results indicate that PIDT-2TPD is a highly functional new type of acceptor and further motivate the use of 2TPD as a building block for other n-type materials.
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ACS Macro Letters, Washington, D.C : American Chemical Society, 2018, 7 (4), pp.395 - 400. 〈10.1021/acsmacrolett.8b00009〉
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https://hal.archives-ouvertes.fr/hal-01829896
Contributeur : Eric Cloutet <>
Soumis le : mercredi 4 juillet 2018 - 13:43:47
Dernière modification le : jeudi 5 juillet 2018 - 01:21:18

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Petri Murto, Zewdneh Genene, Cindy Montenegro Benavides, Xiaofeng Xu, Anirudh Sharma, et al.. High Performance All-Polymer Photodetector Comprising a Donor–Acceptor–Acceptor Structured Indacenodithiophene–Bithieno[3,4- c ]Pyrroletetrone Copolymer. ACS Macro Letters, Washington, D.C : American Chemical Society, 2018, 7 (4), pp.395 - 400. 〈10.1021/acsmacrolett.8b00009〉. 〈hal-01829896〉

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