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Photo- and electroluminescence of ambipolar, high-mobility, donor-acceptor polymers

Donor-acceptor polymers with narrow bandgaps are promising materials for bulk heterojunction solar cells and high-mobility field-effect transistors. They also emit light in the near-infrared. Here we investigate and compare the photoluminescence and electroluminescence properties of different narrow...

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Hauptverfasser: Held, Martin (Verfasst von) , Zakharko, Yuriy (Verfasst von) , Wang, Ming (Verfasst von) , Jakubka, Florian (Verfasst von) , Gannott, Florentina (Verfasst von) , Rumer, Joseph W. (Verfasst von) , Ashraf, Raja Shahid (Verfasst von) , McCulloch, Iain (Verfasst von) , Zaumseil, Jana (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 4 March 2016
In: Organic electronics
Year: 2016, Jahrgang: 32, Pages: 220-227
DOI:10.1016/j.orgel.2016.02.030
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.orgel.2016.02.030
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S156611991630074X
Volltext
Verfasserangaben:Martin Held, Yuriy Zakharko, Ming Wang, Florian Jakubka, Florentina Gannott, Joseph W. Rumer, Raja Shahid Ashraf, Iain McCulloch, Jana Zaumseil
Beschreibung
Zusammenfassung:Donor-acceptor polymers with narrow bandgaps are promising materials for bulk heterojunction solar cells and high-mobility field-effect transistors. They also emit light in the near-infrared. Here we investigate and compare the photoluminescence and electroluminescence properties of different narrow bandgap (<1.5 eV) donor-acceptor polymers with diketopyrrolopyrrole (DPP), isoindigo (IGT) and benzodipyrrolidone (BPT) cores, respectively. All of them show near-infrared photoluminescence quantum yields of 0.03-0.09% that decrease with decreasing bandgap. Bottom-contact/top-gate field-effect transistors show ambipolar charge transport with hole and electron mobilities between 0.02 and 0.7 cm2 V−1 s−1 and near-infrared electroluminescence. Their external quantum efficiencies reach up to 0.001%. The effect of polaron quenching and other reasons for the low electroluminescence efficiency of these high mobility polymers are investigated.
Beschreibung:Gesehen am 12.05.2020
Beschreibung:Online Resource
DOI:10.1016/j.orgel.2016.02.030

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