期刊
MICROELECTRONICS JOURNAL
卷 40, 期 1, 页码 63-65出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mejo.2008.08.004
关键词
Quantum well; Carrier injection; OLEDs; Efficiency
资金
- Samsung SDI Co.
- New Growth Engine Display Center, Ministry of Knowledge Economy (MKE), Korea
The type-II Multiple quantum well (MQW) structure is prepared and introduced into green organic green light-emitting diodes consisting of 4,4'-bis-[N-(naphthyl)-N-phenyl-amino]biphenyl (alpha-NPD) and tris-(8-hydroxyquinolinato)-aluminum(Alq(3)). The quantum Well (QW) and wall are fabricated by 4,4',4 ''-tris-(3-methylphenylphenylamino)triphenylamine (m-MTDATA) and alpha-NPD, respectively. The device performance of MQW organic light-emitting diodes (OLEDs) has been improved; the luminous efficiency by 25% and power efficiency by 17% compared with the reference device. The performance improvement can be explained by the increased electron-hole balance in the device due to the hole confinement in the QW structure. (c) 2008 Elsevier Ltd. All rights reserved.
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