ICCAS OpenIR
Highly efficient polymer light-emitting devices using a phosphorescent sensitizer
He, GF; Chang, SC; Chen, FC; Li, YF; Yang, Y
2002-08-19
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume81Issue:8Pages:1509-1511
AbstractHighly efficient single-layer polymer light-emitting diodes that employ Nile Red as a fluorescent dye, with a green phosphorescent-sensitizer, bis(2-phenyl pyridinato-N,C-2') iridium (acetylacetonate) doped in a PVK/PBD host are demonstrated. The function of the phosphorescent sensitizer is to convert the triplet exciton into a singlet exciton during the energy transfer process. Therefore, ideally, all the excitons can be utilized. For comparison, devices with the same structure, but using a fluorescent sensitizer instead of a phosphorescent sensitizer, were fabricated. The efficiency of the phosphor-sensitized device is 6.4 cd/A, almost triple that of lumophor-sensitized or nonsensitized devices. This result indicates that not only singlet excitons but also triplet excitons are efficiently transferred from the host to the fluorescent dye when a phosphorescent material is used as a sensitizer. (C) 2002 American Institute of Physics.
DOI10.1063/1.1502442
Indexed BySCI
Language英语
WOS IDWOS:000177351600048
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:49[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78634
Collection中国科学院化学研究所
Corresponding AuthorYang, Y
Affiliation1.Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
He, GF,Chang, SC,Chen, FC,et al. Highly efficient polymer light-emitting devices using a phosphorescent sensitizer[J]. APPLIED PHYSICS LETTERS,2002,81(8):1509-1511.
APA He, GF,Chang, SC,Chen, FC,Li, YF,&Yang, Y.(2002).Highly efficient polymer light-emitting devices using a phosphorescent sensitizer.APPLIED PHYSICS LETTERS,81(8),1509-1511.
MLA He, GF,et al."Highly efficient polymer light-emitting devices using a phosphorescent sensitizer".APPLIED PHYSICS LETTERS 81.8(2002):1509-1511.
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