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Article: Solution-processed single-emissive-layer WOLEDs with high efficiency and ultra-high color rendering index beyond 90

TitleSolution-processed single-emissive-layer WOLEDs with high efficiency and ultra-high color rendering index beyond 90
Authors
Issue Date2-Feb-2023
PublisherRoyal Society of Chemistry
Citation
Journal of Materials Chemistry C Materials for optical and electronic devices, 2023, v. 11, n. 12, p. 3936-3943 How to Cite?
Abstract

White organic light-emitting diodes (WOLEDs) have appealing applications in display technology. Developing WOLEDs based on cost-effective manufacturing processes is critical to the commercial pursuits of this technology. Solution-processed WOLEDs (SP-WOLEDs) constructed with a single emissive layer (EML) are a worthy candidate for development. To achieve SP-WOLEDs with high efficiency and high color quality, it is necessary to maximize the exciton utilization efficiency and to regulate the energy transfer process. Herein, three-color SP-WOLEDs were devised, with an EML containing blue and orange luminescent Au(iii) complexes and the deep-red emitter tetraphenyldibenzoperiflanthene (DBP). The optimized WOLED exhibited high maximum external quantum efficiency of 12.72%, attributable to the high exciton utilization efficiency realized by doping a blue thermally activated delayed fluorescent Au(iii) emitter and restraining exciton loss by DBP. High-quality warm-white emission was attained, with Commission International de l'eclairage coordinates of (0.40, 0.40), correlated color temperature of 3695 K, and color rendering index (CRI) of 93, fulfilling the indoor lighting requirements. This result is among the best values for the single-EML SP-WOLEDs with CRI > 90 reported in the literature.


Persistent Identifierhttp://hdl.handle.net/10722/331367
ISSN
2023 Impact Factor: 5.7
2023 SCImago Journal Rankings: 1.358
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhou, Dongling-
dc.contributor.authorCheng, Gang-
dc.contributor.authorLiu, Weiqiang-
dc.contributor.authorWu, Siping-
dc.contributor.authorChe, Chi-Ming-
dc.date.accessioned2023-09-21T06:55:07Z-
dc.date.available2023-09-21T06:55:07Z-
dc.date.issued2023-02-02-
dc.identifier.citationJournal of Materials Chemistry C Materials for optical and electronic devices, 2023, v. 11, n. 12, p. 3936-3943-
dc.identifier.issn2050-7526-
dc.identifier.urihttp://hdl.handle.net/10722/331367-
dc.description.abstract<p>White organic light-emitting diodes (WOLEDs) have appealing applications in display technology. Developing WOLEDs based on cost-effective manufacturing processes is critical to the commercial pursuits of this technology. Solution-processed WOLEDs (SP-WOLEDs) constructed with a single emissive layer (EML) are a worthy candidate for development. To achieve SP-WOLEDs with high efficiency and high color quality, it is necessary to maximize the exciton utilization efficiency and to regulate the energy transfer process. Herein, three-color SP-WOLEDs were devised, with an EML containing blue and orange luminescent Au(iii) complexes and the deep-red emitter tetraphenyldibenzoperiflanthene (DBP). The optimized WOLED exhibited high maximum external quantum efficiency of 12.72%, attributable to the high exciton utilization efficiency realized by doping a blue thermally activated delayed fluorescent Au(iii) emitter and restraining exciton loss by DBP. High-quality warm-white emission was attained, with Commission International de l'eclairage coordinates of (0.40, 0.40), correlated color temperature of 3695 K, and color rendering index (CRI) of 93, fulfilling the indoor lighting requirements. This result is among the best values for the single-EML SP-WOLEDs with CRI > 90 reported in the literature.<br></p>-
dc.languageeng-
dc.publisherRoyal Society of Chemistry-
dc.relation.ispartofJournal of Materials Chemistry C Materials for optical and electronic devices-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleSolution-processed single-emissive-layer WOLEDs with high efficiency and ultra-high color rendering index beyond 90-
dc.typeArticle-
dc.identifier.doi10.1039/d2tc05257a-
dc.identifier.scopuseid_2-s2.0-85148910925-
dc.identifier.volume11-
dc.identifier.issue12-
dc.identifier.spage3936-
dc.identifier.epage3943-
dc.identifier.eissn2050-7534-
dc.identifier.isiWOS:000935810000001-
dc.identifier.issnl2050-7526-

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