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Stable Light-Emitting Electrochemical Cells Using Hyperbranched Polymer Electrolyte

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Stable Light-Emitting Electrochemical Cells Using Hyperbranched Polymer Electrolyte

dc.contributor.author	Mardegan, Lorenzo
dc.contributor.author	Dreessen, Chris
dc.contributor.author	Sessolo, Michele
dc.contributor.author	Tordera Salvador, Daniel
dc.contributor.author	Bolink, Henk
dc.date.accessioned	2022-03-24T15:08:32Z
dc.date.available	2022-03-24T15:08:32Z
dc.date.issued	2021
dc.identifier.citation	Mardegan, Lorenzo Dreessen, Chris Sessolo, Michele Tordera Salvador, Daniel Bolink, Henk 2021 Stable Light-Emitting Electrochemical Cells Using Hyperbranched Polymer Electrolyte Advanced Functional Materials 31 42 2104249
dc.identifier.uri	https://hdl.handle.net/10550/82032
dc.description.abstract	The choice of an adequate electrolyte is a fundamental aspect in polymer light-emitting electrochemical cells (PLECs) as it provides the in situ electrochemical doping and influences the performance of these devices. In this study, a hyperbranched polymer (Hybrane DEO750 8500) blended with a Li salt is used as a novel electrolyte in state-of-the-art Super Yellow (a polyphenylenevinylene) based LECs. Due to the desirable properties of the hyperbranched polymer and the homogeneous and smooth films that it forms with the emitting polymer, PLEC with excellent electroluminescent properties are obtained using a pulsed current bias scheme. The devices are very stable, with lifetimes in excess of 2000 h with initial luminance values above 450 cd m−2, a peak efficiency of 12.6 lm W−1, and sub-minute turn-on times. The stability of the devices is also studied by measuring the photoluminescence (PL) of the semiconductor during electroluminescent operation. The findings suggest that it is possible to observe the quenching of the PL in vertically stacked devices due to the advancement of the doped fronts in the film and an immediate PL recovery when the bias is removed.
dc.language.iso	eng
dc.relation.ispartof	Advanced Functional Materials, 2021, vol. 31, num. 42, p. 2104249
dc.subject	Electroquímica
dc.subject	Materials
dc.title	Stable Light-Emitting Electrochemical Cells Using Hyperbranched Polymer Electrolyte
dc.type	journal article	es_ES
dc.date.updated	2022-03-24T15:08:32Z
dc.identifier.doi	10.1002/adfm.202104249
dc.identifier.idgrec	148497
dc.rights.accessRights	open access	es_ES