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Diketopyrrolopyrrole-polymer meets thiol-ene click chemistry: a cross-linked acceptor for thermally stable near-infrared photodetectors

A problem of bulk-heterojunction (BHJ) organic photodetectors (OPDs) is the morphological instability arising from segregation and demixing of its donor and acceptor components. To stabilize the morphology of the blended active layer we synthesized a cross-linkable low-band-gap 1,4-diketopyrrolo[3,4...

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Hauptverfasser: Casutt, Manuela (VerfasserIn) , Koser, Silke (VerfasserIn) , Bunz, Uwe H. F. (VerfasserIn) , Jänsch, Daniel (VerfasserIn) , Freudenberg, Jan (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 27 August 2019
In: Chemistry of materials
Year: 2019, Jahrgang: 31, Heft: 18, Pages: 7657-7665
ISSN:1520-5002
DOI:10.1021/acs.chemmater.9b02530
Online-Zugang:Verlag, Volltext: https://doi.org/10.1021/acs.chemmater.9b02530
Volltext
Verfasserangaben:Manuela Casutt, Marta Ruscello, Noah Strobel, Silke Koser, Uwe H.F. Bunz, Daniel Jänsch, Jan Freudenberg, Gerardo Hernandez-Sosa, and Klaus Müllen
Beschreibung
Zusammenfassung:A problem of bulk-heterojunction (BHJ) organic photodetectors (OPDs) is the morphological instability arising from segregation and demixing of its donor and acceptor components. To stabilize the morphology of the blended active layer we synthesized a cross-linkable low-band-gap 1,4-diketopyrrolo[3,4-c]pyrrole (DPP)-based donor-acceptor (DA) copolymer with ω-alkenyl side chains. Due to its absorption cutoff above 1000 nm we employed it as an acceptor material in a solution-processed BHJ near-infrared-OPD with P3HT as a donor. Photochemical in situ thiol-ene click chemistry using a tetrathiol as an additive cross-linker renders the BHJ insoluble to organic solvents and stable under accelerated thermal aging.
Beschreibung:Gesehen am 29.10.2019
Beschreibung:Online Resource
ISSN:1520-5002
DOI:10.1021/acs.chemmater.9b02530

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