High-efficiency solution-processed green thermally activated delayed fluorescence OLEDs using a polymer-small molecule mixed host
DC Field | Value | Language |
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dc.contributor.author | Cho, Seunguk | - |
dc.contributor.author | Kwon, Na Yeon | - |
dc.contributor.author | Kim, Chai Won | - |
dc.contributor.author | Lee, Hyoseong | - |
dc.contributor.author | Ha, Jung Min | - |
dc.contributor.author | Kim, Hyung Jong | - |
dc.contributor.author | Woo, Han Young | - |
dc.contributor.author | Park, Sungnam | - |
dc.contributor.author | Cho, Min Ju | - |
dc.contributor.author | Choi, Dong Hoon | - |
dc.date.accessioned | 2022-04-12T03:42:36Z | - |
dc.date.available | 2022-04-12T03:42:36Z | - |
dc.date.created | 2022-04-12 | - |
dc.date.issued | 2022-03-29 | - |
dc.identifier.issn | 1759-9954 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/140080 | - |
dc.description.abstract | The development of suitable host materials for application to an emitter is of significant importance for high-efficiency organic light-emitting diodes (OLEDs). In this study, we successfully synthesized poly(9,9-diphenyl-10-(4-vinylbenzyl)-9,10-dihydroacridine) (P(Bn-DPAc)) as a polymer donor and 2-(4'-(tert-butyl)-[1,1'-biphenyl]-4-yl)-4,6-diphenyl-1,3,5-triazine (tPTRZ) as a small-molecule acceptor. A blend of P(Bn-DPAc) and tPTRZ was used as the host material in solution-processed green thermally activated delayed fluorescence OLEDs (TADF-OLEDs). The P(Bn-DPAc)-tPTRZ blend showed a new red-shifted peak in the photoluminescence spectrum, suggesting the possibility of exciplex formation. The polymer-mixed host film showed a fine surface morphology, a well-formed exciplex in the bulk state, and good charge balance. The OLED fabricated with the as-prepared mixed host (P(Bn-DPAc) : tPTRZ = 1: 1 wt ratio) and 2,4,5,6-tetra(3,6-di-tert-butylcarbazol-9-yl)-1,3-dicyanobenzene (t4CzIPN) emitter exhibited a high current efficiency of 107.3 cd A(-1) and a maximum external quantum efficiency (EQE) of 31.2%. The OLED fabricated with the mixed host demonstrated better performance compared to the device with a unipolar host P(Bn-DPAc). | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | LIGHT-EMITTING-DIODES | - |
dc.subject | WHITE PHOSPHORESCENT | - |
dc.subject | QUANTUM EFFICIENCY | - |
dc.subject | EXCIPLEX | - |
dc.subject | BLUE | - |
dc.subject | TADF | - |
dc.title | High-efficiency solution-processed green thermally activated delayed fluorescence OLEDs using a polymer-small molecule mixed host | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Woo, Han Young | - |
dc.contributor.affiliatedAuthor | Park, Sungnam | - |
dc.identifier.doi | 10.1039/d1py01700d | - |
dc.identifier.scopusid | 2-s2.0-85127061080 | - |
dc.identifier.wosid | 000764204100001 | - |
dc.identifier.bibliographicCitation | POLYMER CHEMISTRY, v.13, no.13, pp.1824 - 1830 | - |
dc.relation.isPartOf | POLYMER CHEMISTRY | - |
dc.citation.title | POLYMER CHEMISTRY | - |
dc.citation.volume | 13 | - |
dc.citation.number | 13 | - |
dc.citation.startPage | 1824 | - |
dc.citation.endPage | 1830 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | WHITE PHOSPHORESCENT | - |
dc.subject.keywordPlus | QUANTUM EFFICIENCY | - |
dc.subject.keywordPlus | EXCIPLEX | - |
dc.subject.keywordPlus | BLUE | - |
dc.subject.keywordPlus | TADF | - |
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