期刊
SYNTHETIC METALS
卷 146, 期 1, 页码 11-15出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2004.06.016
关键词
OLEDs; Alq(3); alpha-NPD; Boditerpy dyes; energy transfer
The neutral 4,4-difluoro-8-(2,2':6',2-terpyridine-4'-yl)-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene (Boditerpy) molecule was synthesized and incorporated as dopant (<1%) in double-layer organic light emitting diodes (OLEDs) with the configuration ITO/alpha-NPD(60 nm)/Alq(3)(60 nm):Boditerpy (0.4 nm)/LiF(0.02 nm)/Al(80 nm). This device exhibits green emission with a brightness of 545 cd/m(2) at 8 V and a maximum power efficiency of 0.9 lm/W. A full quantitative energy transfer process is indicated by a complete quenching of light emission from Alq(3) in photoluminescence. However, I-V characteristics indicate some losses during the charge transfer processes in OLED configuration (C) 2004 Elsevier B.V. All rights reserved.
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