A metal-free and transparent light-emitting device by sequential spray-coating fabrication of all layers including PEDOT:PSS for both electrodes.

Autor:	Auroux E; The Organic Photonics and Electronics Group, Department of Physics, Umeå University SE-90187 Umeå Sweden ludvig.edman@umu.se., Huseynova G; The Organic Photonics and Electronics Group, Department of Physics, Umeå University SE-90187 Umeå Sweden ludvig.edman@umu.se., Ràfols-Ribé J; The Organic Photonics and Electronics Group, Department of Physics, Umeå University SE-90187 Umeå Sweden ludvig.edman@umu.se., Miranda La Hera V; The Organic Photonics and Electronics Group, Department of Physics, Umeå University SE-90187 Umeå Sweden ludvig.edman@umu.se., Edman L; The Organic Photonics and Electronics Group, Department of Physics, Umeå University SE-90187 Umeå Sweden ludvig.edman@umu.se.
Jazyk:	angličtina
Zdroj:	RSC advances [RSC Adv] 2023 Jun 06; Vol. 13 (25), pp. 16943-16951. Date of Electronic Publication: 2023 Jun 06 (Print Publication: 2023).
DOI:	10.1039/d3ra02520a
Abstrakt:	The concept of a metal-free and all-organic electroluminescent device is appealing from both sustainability and cost perspectives. Herein, we report the design and fabrication of such a light-emitting electrochemical cell (LEC), comprising a blend of an emissive semiconducting polymer and an ionic liquid as the active material sandwiched between two poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) conducting-polymer electrodes. In the off-state, this all-organic LEC is highly transparent, and in the on-state, it delivers uniform and fast to turn-on bright surface emission. It is notable that all three device layers were fabricated by material- and cost-efficient spray-coating under ambient air. For the electrodes, we systematically investigated and developed a large number of PEDOT:PSS formulations. We call particular attention to one such p-type doped PEDOT:PSS formulation that was demonstrated to function as the negative cathode, as well as future attempts towards all-organic LECs to carefully consider the effects of electrochemical doping of the electrode in order to achieve optimum device performance. Competing Interests: The authors declare that they have no conflict of interest. (This journal is © The Royal Society of Chemistry.)
Databáze:	MEDLINE
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