Diketopyrrolopyrrole-Polymer Meets Thiol–Ene Click Chemistry: A Cross-Linked Acceptor for Thermally Stable Near-Infrared Photodetectors
Source abstract
Abstract
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.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Luminescence and Fluorescent Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
InnovationLab, Speyerer Strasse 4, 69115 Heidelberg, Germany
Max-Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
Light Technology Institute, Karlsruhe Institute of Technology, Engesserstrasse 13, 76131 Karlsruhe, Germany
Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
Funding
Bundesministerium für Bildung und Forschung
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