DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Sanghyuk | ko |
dc.contributor.author | Seo, Jangwon | ko |
dc.contributor.author | Kim, Se Hun | ko |
dc.contributor.author | Park, Soo Young | ko |
dc.date.accessioned | 2021-05-04T05:31:02Z | - |
dc.date.available | 2021-05-04T05:31:02Z | - |
dc.date.created | 2021-05-04 | - |
dc.date.issued | 2008-03 | - |
dc.identifier.citation | ADVANCED FUNCTIONAL MATERIALS, v.18, no.5, pp.726 - 731 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | http://hdl.handle.net/10203/282763 | - |
dc.description.abstract | Aiming for highly efficient blue electroluminesence, we have designed and synthesized a novel class of tetraphenylimidazol-based excited-state intramolecular proton-transfer (ESIPT) molecules with covalently linked charge-transporting functional groups (carbazole- and oxadiazole- functionalized hydroxyl-substituted tetraphenylimidazole (HPI), i.e., HPI-Cbz and HPI-Oxd, respectively). High T-g (ca. 130 degrees C) amorphous films of HPI-Cbz and HPI-Oxd showed and ideal blue-light emission (lambda(max)=462 and 468 nm, Phi(PL) = 0.48 and 0.38) with a large Stokes shift of over 160 nm and a narrow full width at half-maximum of less than 65 nm. Organic light-emitting devices using HPI-Cbz and HPI-Oxd as the emitting layer generated an efficient blue electroluminescence (EL) emission peaking at around 460 nm with excellent CIE coordinates of (x, y) = (0.15, 0.1). A maximum external quantum efficiency of 2.94% and a maximum brightness of 1 229 cd m(-2) at 100 mA cm(-2), as well as a low turn-on voltage of 48.4 V were achieved in this work. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Tetraphenylimidazole-based excited-state intramolecular proton-transfer molecules for highly efficient blue electroluminescence | - |
dc.type | Article | - |
dc.identifier.wosid | 000254448400007 | - |
dc.identifier.scopusid | 2-s2.0-41149109174 | - |
dc.type.rims | ART | - |
dc.citation.volume | 18 | - |
dc.citation.issue | 5 | - |
dc.citation.beginningpage | 726 | - |
dc.citation.endingpage | 731 | - |
dc.citation.publicationname | ADVANCED FUNCTIONAL MATERIALS | - |
dc.identifier.doi | 10.1002/adfm.200700827 | - |
dc.contributor.localauthor | Seo, Jangwon | - |
dc.contributor.nonIdAuthor | Park, Sanghyuk | - |
dc.contributor.nonIdAuthor | Kim, Se Hun | - |
dc.contributor.nonIdAuthor | Park, Soo Young | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | AMPLIFIED SPONTANEOUS EMISSION | - |
dc.subject.keywordPlus | TRANSFER SPECTROSCOPY | - |
dc.subject.keywordPlus | STIMULATED-EMISSION | - |
dc.subject.keywordPlus | CONJUGATED POLYMERS | - |
dc.subject.keywordPlus | ELECTRON-TRANSPORT | - |
dc.subject.keywordPlus | FLUORESCENCE | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordPlus | DERIVATIVES | - |
dc.subject.keywordPlus | LAYER | - |
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