Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chin, BD | - |
dc.contributor.author | Suh, MC | - |
dc.contributor.author | Kim, MH | - |
dc.contributor.author | Lee, ST | - |
dc.contributor.author | Kim, HD | - |
dc.contributor.author | Chung, HK | - |
dc.date.accessioned | 2024-01-21T05:12:37Z | - |
dc.date.available | 2024-01-21T05:12:37Z | - |
dc.date.created | 2021-09-03 | - |
dc.date.issued | 2005-03-28 | - |
dc.identifier.issn | 0003-6951 | - |
dc.identifier.uri | https://pubs.kist.re.kr/handle/201004/136630 | - |
dc.description.abstract | We have presented a physical concept for enhancing efficiency and lifetime of doped electrophosphorescent organic light-emitting devices. In order to provide a control parameter for higher device performance, a stepwise doping concentration profile at the emission layer was prepared. A more than 30% improvement of power efficiency was obtained for green electrophosphorescent device with a higher doping ratio at the emission layer-hole transport layer interface. We explained the carrier trapping and transport mechanism with direct recombination of an exciton in an iridium-based dopant system. When compared to green device, phosphorescent red devices showed a more significant charge trapping effect at low doping concentration, which is responsible for shifting the recombination zone far from the emission layer-hole transport layer interface. Therefore, charge trapping by doping control in an emission layer could be utilized for a charge-balancing technique for the confinement of a triplet exciton. (C) 2005 American Institute of Physics. | - |
dc.language | English | - |
dc.publisher | AMER INST PHYSICS | - |
dc.subject | LEVEL ALIGNMENT | - |
dc.subject | ORGANIC ELECTROPHOSPHORESCENCE | - |
dc.subject | TRANSIENT ANALYSIS | - |
dc.title | Carrier trapping and efficient recombination of electrophosphorescent device with stepwise doping profile | - |
dc.type | Article | - |
dc.identifier.doi | 10.1063/1.1894596 | - |
dc.description.journalClass | 1 | - |
dc.identifier.bibliographicCitation | APPLIED PHYSICS LETTERS, v.86, no.13 | - |
dc.citation.title | APPLIED PHYSICS LETTERS | - |
dc.citation.volume | 86 | - |
dc.citation.number | 13 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.identifier.wosid | 000228422600078 | - |
dc.identifier.scopusid | 2-s2.0-17644419634 | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalResearchArea | Physics | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | LEVEL ALIGNMENT | - |
dc.subject.keywordPlus | ORGANIC ELECTROPHOSPHORESCENCE | - |
dc.subject.keywordPlus | TRANSIENT ANALYSIS | - |
dc.subject.keywordAuthor | OLED | - |
dc.subject.keywordAuthor | Carrer Trapping | - |
dc.subject.keywordAuthor | Doping Profile | - |
dc.subject.keywordAuthor | Electrophosphorescent | - |
dc.subject.keywordAuthor | Device Physics | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.