Color tuning of the OLEDs using the Ir complexes of white emission by adjusting the band gap of host materials
DC Field | Value | Language |
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dc.contributor.author | Seo, J.H. | - |
dc.contributor.author | Hyung, G.W. | - |
dc.contributor.author | Seo, J.H. | - |
dc.contributor.author | Kim, J.H. | - |
dc.contributor.author | Lee, Y.H. | - |
dc.contributor.author | Kim, Y.S. | - |
dc.contributor.author | Kim, Y.K. | - |
dc.date.accessioned | 2022-01-14T09:43:51Z | - |
dc.date.available | 2022-01-14T09:43:51Z | - |
dc.date.created | 2022-01-14 | - |
dc.date.issued | 2007 | - |
dc.identifier.issn | 0000-0000 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/24287 | - |
dc.description.abstract | We have reported white organic light-emitting diodes (WOLEDs) based on single white dopants, Ir(pq)2 (F2-ppy) and Ir(F 2-ppy)2(pq). It was found that the similar phosphorescent lifetime of two ligands led to emit luminescence in two ligands at the same time and the emission wavelength of single white dopants had a broad peak and emit white color without the intermolecular energy transfer. The configuration of fabricated WOLEDs was 4,4′, 4″-tris[2-naphthylphenyl-amino] triphenylamine (2-TNATA) (60 nm)/4, 4′-bis[N-(naphthyl)-/V-phenyl-amino] biphenyl (NPB) (20 nm)/10% Ir complex doped in 4, 4, N, N'-dicarbazolebiphenyl (CBP) (30 nm)/bathocuproine (BCP) (10 nm)/tris-(8-hydroxyquinoline) aluminum (Alq2) (20 nm)/lithium quinolate (Liq) (2 nm)/Al (100 nm), where Ir(pq)2(F2-ppy) and Ir(F2-ppy)2 (pq) were used as white dopant, respectively. However, emission color of fabricated devices was reddish because the energy was not transferred efficiently from the CBP to the F2-ppy ligand due to the small band gap of the CBP. Therefore, we used 1, 4-phenylenesis(triphenylsilane) (UGH2) of large band gap instead of CBP as host material. As a result, high efficient OLED of white emission was fabricated for device with Ir(F2-ppy)2(pq). Furthermore, The luminous efficiency of device with Ir(F2-ppy)2(pq) doped in UGH2 was about 11 cd/A at 0.06 cd/m2. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.title | Color tuning of the OLEDs using the Ir complexes of white emission by adjusting the band gap of host materials | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Y.K. | - |
dc.identifier.scopusid | 2-s2.0-77958071324 | - |
dc.identifier.bibliographicCitation | AD'07 - Proceedings of Asia Display 2007, v.2, pp.1489 - 1493 | - |
dc.relation.isPartOf | AD'07 - Proceedings of Asia Display 2007 | - |
dc.citation.title | AD'07 - Proceedings of Asia Display 2007 | - |
dc.citation.volume | 2 | - |
dc.citation.startPage | 1489 | - |
dc.citation.endPage | 1493 | - |
dc.type.rims | ART | - |
dc.type.docType | Conference Paper | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Ir(F2-ppy)2(pq) | - |
dc.subject.keywordAuthor | Ir(pq) 2(F2-ppy) | - |
dc.subject.keywordAuthor | Single white dopant | - |
dc.subject.keywordAuthor | White organic light-emitting diodes | - |
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