DC Field | Value | Language |
---|---|---|
dc.contributor.author | Bae, Hye Jin | ko |
dc.contributor.author | Kim, Jong Soo | ko |
dc.contributor.author | Yakubovich, Alexander | ko |
dc.contributor.author | Jeong, Jinhoon | ko |
dc.contributor.author | Park, Sangho | ko |
dc.contributor.author | Chwae, Jun | ko |
dc.contributor.author | Ishibe, Satoko | ko |
dc.contributor.author | Jung, Yongsik | ko |
dc.contributor.author | Rai, Virendra Kumar | ko |
dc.contributor.author | Son, Won-Joon | ko |
dc.contributor.author | Kim, Sunghan | ko |
dc.contributor.author | Choi, Hyeonho | ko |
dc.contributor.author | Baik, Mu-Hyun | ko |
dc.date.accessioned | 2021-09-01T01:30:54Z | - |
dc.date.available | 2021-09-01T01:30:54Z | - |
dc.date.created | 2021-06-01 | - |
dc.date.issued | 2021-08 | - |
dc.identifier.citation | ADVANCED OPTICAL MATERIALS, v.9, no.16, pp.2100630 | - |
dc.identifier.issn | 2195-1071 | - |
dc.identifier.uri | http://hdl.handle.net/10203/287554 | - |
dc.description.abstract | Much effort has been dedicated to increase the operational lifetime of blue phosphorescent materials in organic light-emitting diodes (OLEDs), but the reported device lifetimes are still too short for the industrial applications. An attractive method for increasing the lifetime of a given emitter without making any chemical change is exploiting the kinetic isotope effect, where key C-H bonds are deuterated. A computer model identifies that the most vulnerable molecular site in an Ir-phenylimidazole dopant is the benzylic C-H bond and predicts that deuteration may hamper the deactivation pathway involving C-H/D bond cleavage notably. Experiments show that the device lifetime until the initial luminance diminishes to 70% (LT70) of a prototype phosphorescent OLED device can be doubled to 355 hours with a maximum external quantum efficiency of 25.1% at 1000 cd m(-2). This is one of the best operational performances of blue phosphorescent OLEDs observed to date in a single stacked cell. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Protecting Benzylic C-H Bonds by Deuteration Doubles the Operational Lifetime of Deep-Blue Ir-Phenylimidazole Dopants in Phosphorescent OLEDs | - |
dc.type | Article | - |
dc.identifier.wosid | 000651649500001 | - |
dc.identifier.scopusid | 2-s2.0-85105974429 | - |
dc.type.rims | ART | - |
dc.citation.volume | 9 | - |
dc.citation.issue | 16 | - |
dc.citation.beginningpage | 2100630 | - |
dc.citation.publicationname | ADVANCED OPTICAL MATERIALS | - |
dc.identifier.doi | 10.1002/adom.202100630 | - |
dc.contributor.localauthor | Baik, Mu-Hyun | - |
dc.contributor.nonIdAuthor | Bae, Hye Jin | - |
dc.contributor.nonIdAuthor | Kim, Jong Soo | - |
dc.contributor.nonIdAuthor | Yakubovich, Alexander | - |
dc.contributor.nonIdAuthor | Park, Sangho | - |
dc.contributor.nonIdAuthor | Chwae, Jun | - |
dc.contributor.nonIdAuthor | Ishibe, Satoko | - |
dc.contributor.nonIdAuthor | Jung, Yongsik | - |
dc.contributor.nonIdAuthor | Rai, Virendra Kumar | - |
dc.contributor.nonIdAuthor | Son, Won-Joon | - |
dc.contributor.nonIdAuthor | Kim, Sunghan | - |
dc.contributor.nonIdAuthor | Choi, Hyeonho | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | blue OLEDs | - |
dc.subject.keywordAuthor | DFT calculations | - |
dc.subject.keywordAuthor | homoleptic Ir(III) complex | - |
dc.subject.keywordAuthor | kinetic isotope effect | - |
dc.subject.keywordAuthor | operational lifetime | - |
dc.subject.keywordPlus | LIGHT-EMITTING DEVICES | - |
dc.subject.keywordPlus | CYCLOMETALATED IRIDIUM COMPLEXES | - |
dc.subject.keywordPlus | EXTERNAL QUANTUM EFFICIENCY | - |
dc.subject.keywordPlus | SOLVATION FREE-ENERGIES | - |
dc.subject.keywordPlus | SKY-BLUE | - |
dc.subject.keywordPlus | DEGRADATION MECHANISMS | - |
dc.subject.keywordPlus | CHEMICAL DEGRADATION | - |
dc.subject.keywordPlus | ROLL-OFF | - |
dc.subject.keywordPlus | MOLECULAR CALCULATIONS | - |
dc.subject.keywordPlus | IR(III) COMPLEXES | - |
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