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dc.contributor.author Lee, Hyena -
dc.contributor.author Cho, Gwijeong -
dc.contributor.author Woo, Sungho -
dc.contributor.author Nam, Sungho -
dc.contributor.author Jeong, Jaehoon -
dc.contributor.author Kim, Hwajeong -
dc.contributor.author Kim, Youngkyoo -
dc.date.available 2017-07-11T07:00:13Z -
dc.date.created 2017-04-10 -
dc.date.issued 2012 -
dc.identifier.issn 2046-2069 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/3420 -
dc.description.abstract We report a diimide-type organic electron-injecting material, bis-[1,10]phenanthrolin-5-yl-pyromellitic diimide (Bphen-PMDI), for organic light-emitting devices (OLEDs), which was synthesized from its monomers, pyromellitic dianhydride (PMDA) and 1,10-phenanthrolin-5-amine (PTA). The vacuum-purified Bphen-PMDI powder showed high glass transition (∼230°C) and thermal decomposition (∼400°C) temperatures, whereas neither melting point nor particular long-range crystal nanostructures were observed from its solid samples. The optical band gap energy and the ionization potential of the Bphen-PMDI film were 3.6 eV and 6.0 eV, respectively, leading to the lowest unoccupied molecular orbital (LUMO) energy of 2.4 eV. Inserting a 1 nm thick Bphen-PMDI layer between the emission layer and the cathode layer improved the device current density by 10-fold and the luminance by 6-fold, compared to the OLED without the Bphen-PMDI layer. The result suggests that an effective electron tunnel injection process occurs through the Bphen-PMDI layer. © The Royal Society of Chemistry 2012. -
dc.publisher Royal Society of Chemistry -
dc.title Phenanthroline diimide as an organic electron-injecting material for organic light-emitting devices -
dc.type Article -
dc.identifier.doi 10.1039/c2ra20524f -
dc.identifier.wosid 000308562600030 -
dc.identifier.scopusid 2-s2.0-84890493541 -
dc.identifier.bibliographicCitation RSC Advances, v.2, no.23, pp.8762 - 8767 -
dc.description.isOpenAccess FALSE -
dc.subject.keywordPlus AL/LIF ELECTRODE -
dc.subject.keywordPlus Current Density -
dc.subject.keywordPlus Decomposition -
dc.subject.keywordPlus Effective Electrons -
dc.subject.keywordPlus ELECTROLUMINESCENT DIODES -
dc.subject.keywordPlus Electron Injection -
dc.subject.keywordPlus emission Layers -
dc.subject.keywordPlus Energy Gap -
dc.subject.keywordPlus Glass Transition -
dc.subject.keywordPlus Ionization Potential -
dc.subject.keywordPlus Light emission -
dc.subject.keywordPlus Lowest Unoccupied Molecular Orbital -
dc.subject.keywordPlus Molecular Orbitals -
dc.subject.keywordPlus Optical Band Gap Energy -
dc.subject.keywordPlus Organic Light-emitting Devices -
dc.subject.keywordPlus PERFORMANCE -
dc.subject.keywordPlus Phenanthrolines -
dc.subject.keywordPlus Pyromellitic Dianhydride -
dc.subject.keywordPlus SOLAR-CELLS -
dc.subject.keywordPlus Tunnel Injection -
dc.citation.endPage 8767 -
dc.citation.number 23 -
dc.citation.startPage 8762 -
dc.citation.title RSC Advances -
dc.citation.volume 2 -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Chemistry -
dc.relation.journalWebOfScienceCategory Chemistry, Multidisciplinary -
dc.type.docType Article -
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Division of Energy & Environmental Technology 1. Journal Articles

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