DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Junwoo | ko |
dc.contributor.author | Lee, Changyeon | ko |
dc.contributor.author | Jung, Jihye | ko |
dc.contributor.author | Kang, Hyunbum | ko |
dc.contributor.author | Kim, Ki Hyun | ko |
dc.contributor.author | Ma, Biwu | ko |
dc.contributor.author | Kim, Bum-Joon | ko |
dc.date.accessioned | 2015-04-08T05:13:56Z | - |
dc.date.available | 2015-04-08T05:13:56Z | - |
dc.date.created | 2015-01-20 | - |
dc.date.created | 2015-01-20 | - |
dc.date.created | 2015-01-20 | - |
dc.date.issued | 2014-10 | - |
dc.identifier.citation | ADVANCED FUNCTIONAL MATERIALS, v.24, no.48, pp.7588 - 7596 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | http://hdl.handle.net/10203/195641 | - |
dc.description.abstract | A novel framework of azide containing photo-crosslinkable, conducting copolymer, that is, poly(azido-styrene)-random-poly(triphenylamine) (X-PTPA), is reported as a hole-transporting material for efficient solution-processed, multi-layer, organic light emitting diodes (OLEDs). A facile and energy-efficient crosslinking process is demonstrated with UV irradiation (254 nm, 2 mW/cm(2)) at a short exposure time (5 min). By careful design of X-PTPA, in which 5 mol% of the photo-crosslinkable poly(azido-styrene) is copolymerized with hole-transporting poly(triphenylamine) (X-PTPA-5), the adverse effect of the crosslinking of azide moieties is prevented to maximize the performances of X-PTPA-5. Since the photo-crosslinking chemistry of azide molecules does not involve any photo-initiators, superior hole-transporting ability is achieved, producing efficient devices. To evaluate the performances of X-PTPA-5 as a hole-transporting/electron-blocking layer, Ir(ppy)(3)-based, solution-processable OLEDs are fabricated. The results show high EQE (11.8%), luminous efficiency (43.7 cd/A), and power efficiency (10.4 lm/W), which represent about twofold enhancement over the control device without X-PTPA-5 film. Furthermore, micro-patterned OLEDs with the photo-crosslinkable X-PTPA-5 can be fabricated through standard photolithography. The versatility of this approach is also demonstrated by introducing the same azide moiety into other hole-transporting materials such as poly(carbazole) (X-PBC). | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Facile Photo-Crosslinking of Azide-Containing Hole-Transporting Polymers for Highly Efficient, Solution-Processed, Multilayer Organic Light Emitting Devices | - |
dc.type | Article | - |
dc.identifier.wosid | 000346498900003 | - |
dc.identifier.scopusid | 2-s2.0-84919909056 | - |
dc.type.rims | ART | - |
dc.citation.volume | 24 | - |
dc.citation.issue | 48 | - |
dc.citation.beginningpage | 7588 | - |
dc.citation.endingpage | 7596 | - |
dc.citation.publicationname | ADVANCED FUNCTIONAL MATERIALS | - |
dc.identifier.doi | 10.1002/adfm.201401958 | - |
dc.contributor.localauthor | Kim, Bum-Joon | - |
dc.contributor.nonIdAuthor | Jung, Jihye | - |
dc.contributor.nonIdAuthor | Ma, Biwu | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | ELECTROLUMINESCENT DEVICES | - |
dc.subject.keywordPlus | ELECTRON-TRANSPORT | - |
dc.subject.keywordPlus | CONJUGATED POLYMERS | - |
dc.subject.keywordPlus | CONDUCTING POLYMER | - |
dc.subject.keywordPlus | DIODES | - |
dc.subject.keywordPlus | LAYER | - |
dc.subject.keywordPlus | INJECTION | - |
dc.subject.keywordPlus | HOST | - |
dc.subject.keywordPlus | METHANOFULLERENE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
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