ICCAS OpenIR
Efficient polymer light-emitting diodes using conjugated polymer blends
He, GF; Liu, J; Li, YF; Yang, Y
2002-03-18
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume80Issue:11Pages:1891-1893
AbstractPhotoluminescence studies have been performed on poly [2,5-bis(cheolestranoxy)-1,4-phenylene vinylene] (BCHA) blends with poly(9,9-dioctylfluorene) (PF). The composition-independent, distinctive emission of BCHA in the BCHA/PF blends suggests the nonexistence of interchain species in the blends, due to polymer chain separation by bulky side groups. The electroluminescence (EL) efficiencies of devices made with BCHA/PF blends were also found to be superior to the BCHA-only devices. For example, the EL efficiency of the BCHA (10%)/PF device was 3.0 cd/A, which is about five times higher than a BCHA device. The basis for this enhancement has been attributed to improved charge injection and charge trapping in BCHA/PF blends. Holes are injected in these blends through the PF component and then transferred and trapped in BCHA, where radiative recombination subsequently occurs. As a result of improved minority-carrier injection, the turn-on voltages of the BCHA/PF devices are also much lower than the BCHA devices. (C) 2002 American Institute of Physics.
DOI10.1063/1.1459770
Indexed BySCI
Language英语
WOS IDWOS:000174363300012
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78256
Collection中国科学院化学研究所
Corresponding AuthorYang, Y
Affiliation1.Univ Calif Los Angeles, Inst Chem, 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,Liu, J,Li, YF,et al. Efficient polymer light-emitting diodes using conjugated polymer blends[J]. APPLIED PHYSICS LETTERS,2002,80(11):1891-1893.
APA He, GF,Liu, J,Li, YF,&Yang, Y.(2002).Efficient polymer light-emitting diodes using conjugated polymer blends.APPLIED PHYSICS LETTERS,80(11),1891-1893.
MLA He, GF,et al."Efficient polymer light-emitting diodes using conjugated polymer blends".APPLIED PHYSICS LETTERS 80.11(2002):1891-1893.
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