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DC Field | Value | Language |
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dc.citation.endPage | 12700 | - |
dc.citation.number | 25 | - |
dc.citation.startPage | 12695 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY | - |
dc.citation.volume | 22 | - |
dc.contributor.author | Park, Ji Sun | - |
dc.contributor.author | Lee, Ju Min | - |
dc.contributor.author | Hwang, Sun Kak | - |
dc.contributor.author | Lee, Sun Hwa | - |
dc.contributor.author | Lee, Hyun-Jung | - |
dc.contributor.author | Lee, Bo Ram | - |
dc.contributor.author | Park, Hyung Il | - |
dc.contributor.author | Kim, Ji-Seon | - |
dc.contributor.author | Yoo, Seunghyup | - |
dc.contributor.author | Song, Myoung Hoon | - |
dc.contributor.author | Kim, Sang Ouk | - |
dc.date.accessioned | 2023-12-22T05:07:01Z | - |
dc.date.available | 2023-12-22T05:07:01Z | - |
dc.date.created | 2013-06-03 | - |
dc.date.issued | 2012-07 | - |
dc.description.abstract | Metal oxide charge transport layers are widely used to promote the interfacial charge transport of organic optoelectronics. Nevertheless, frequently used wide-bandgap metal oxides with low electrical conductivities reveal inherent limitations in the charge transport enhancement. We present the remarkable electro-conductivity enhancement of solution processable ZnO charge transport layers upon dispersing a tiny amount (less than 0.1 wt%) of chemically doped CNTs and the corresponding device performance improvement of light-emitting diodes (OLEDs). Using various undoped or doped CNTs, whose work function was systematically tuned by substitutional doping of electron deficient B or electron rich N,N-doped CNT (N-CNT), the composite showed a lowered work function matching well with the conduction band of ZnO. Consequently, the ZnO/N-CNT nanocomposite transport layer with 0.08 wt% N-CNT showed a five-fold enhancement of electron mobility, while maintaining the intrinsic bandgap energy levels, optical transparency and solution processability of pure ZnO. The inverted OLEDs employing ZnO/N-CNT nanocomposite electron transport layers could facilitate well-balanced electron-hole injection and, thus, more than two-fold enhancement of maximum luminance (from 21 000 cd m(-2) at 14.6 V to 46 100 cd m(-2) at 14.0 V) and efficiency (from 6.9 cd A(-1) at 13.4 V to 14.3 cd A(-1) at 13.6 V). This highly effective charge mobility enhancement enabled by work function tunable, chemically doped CNTs would be beneficial for various organic and inorganic charge transport materials with different energy levels. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY, v.22, no.25, pp.12695 - 12700 | - |
dc.identifier.doi | 10.1039/c2jm30710c | - |
dc.identifier.issn | 0959-9428 | - |
dc.identifier.scopusid | 2-s2.0-84862181903 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/2547 | - |
dc.identifier.url | http://pubs.rsc.org/en/Content/ArticleLanding/2012/JM/c2jm30710c#!divAbstract | - |
dc.identifier.wosid | 000304884000040 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | A ZnO/N-doped carbon nanotube nanocomposite charge transport layer for high performance optoelectronics | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | ELECTRON INJECTION | - |
dc.subject.keywordPlus | SOLAR-CELLS | - |
dc.subject.keywordPlus | METAL-OXIDE | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordPlus | GRAPHENE | - |
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