DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, T.-H | - |
dc.contributor.author | Kim, Y.-H | - |
dc.contributor.author | Kim, M.H | - |
dc.contributor.author | Song, W | - |
dc.contributor.author | Lee, T.-W. | - |
dc.date.accessioned | 2017-07-19T12:27:22Z | - |
dc.date.available | 2017-07-19T12:27:22Z | - |
dc.date.created | 2016-03-08 | - |
dc.date.issued | 2016-03-09 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/35844 | - |
dc.description.abstract | We used various nondestructive analyses to investigate various host material systems in the emitting layer (EML) of simple-structured, green phosphorescent organic light-emitting diodes (OLEDs) to clarify how the host systems affect its luminous efficiency (LE) and operational stability. An OLED that has a unipolar single-host EML with conventional poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) showed high operating voltage, low LE (similar to 26.6 cd/A, 13.7 lm/W), and short lifetime (similar to 4.4 h @ 1000 cd/m(2)). However, the combined use of a gradient mixed-host EML and a molecularly controlled HIL that has increased surface work function (WF) remarkably decreased operating voltage and improved LE (similar to 68.7 cd/A, 77.0 lm/W) and lifetime (similar to 70.7 h @ 1000 cd/m(2)). Accumulated charges at the injecting interfaces and formation of a narrow recombination zone close to the interfaces are the major factors that accelerate degradation of charge injection/transport and electroluminescent properties of OLEDs, so achievement of simple-structured OLEDs with high efficiency and long lifetime requires facilitating charge injection and balanced transport into the EMI, and distributing charge carriers and excitons in EML. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.subject | INDIUM-TIN-OXIDE | - |
dc.subject | SMALL-MOLECULE | - |
dc.subject | ELECTROLUMINESCENT DEVICES | - |
dc.subject | TRANSIENT ELECTROLUMINESCENCE | - |
dc.subject | DEGRADATION MECHANISMS | - |
dc.subject | CONJUGATED POLYMERS | - |
dc.subject | EXCITONS | - |
dc.title | Synergetic Influences of Mixed-Host Emitting Layer Structures and Hole Injection Layers on Efficiency and Lifetime of Simplified Phosphorescent Organic Light-Emitting Diodes | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acsami.5b11791 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.8, no.9, pp.6152 - 6163 | - |
dc.identifier.wosid | 000371945700045 | - |
dc.date.tcdate | 2019-03-01 | - |
dc.citation.endPage | 6163 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 6152 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 8 | - |
dc.contributor.affiliatedAuthor | Lee, T.-W. | - |
dc.identifier.scopusid | 2-s2.0-84960474919 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 15 | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | organic light-emitting diodes | - |
dc.subject.keywordAuthor | simple structure | - |
dc.subject.keywordAuthor | mixed host | - |
dc.subject.keywordAuthor | degradation mechanism | - |
dc.subject.keywordAuthor | lifetime | - |
dc.subject.keywordAuthor | nondestructive analysis | - |
dc.subject.keywordAuthor | transient electroluminescence | - |
dc.subject.keywordAuthor | capacitance-voltage | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
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