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Proceedings Paper

Combinatorial fabrication and study of white organic light-emitting devices based on non-doping ultrathin 5,6,11,12-tetraphenylnaphthcene (rubrene) yellow-emitting layer
Author(s): Hai-Sheng Wu; Zhaoqun Zhou; Chang-Hwan Kim; Gang Li; Joseph Shinar
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Paper Abstract

Non-doping white organic light-emitting devices (WOLEDs) based on an ultrathin yellow-emitting layer of rubrene inserted between the blue-emitting layer 4,4'-bis(2,2'-diphenylvinyl)-1,1'-biphenyl (DPVBi) and the electron transport layer tris-(8-hydroxyquinoline)aluminum (Alq3) fabricated by combinatorial sliding shutter technique are reported. Three of the the sixteen devices made had Commission Internationale de l'Eclairage (CIE) coordinates within the white region at 8 - 16 V, ranging from (0.31, 0.38) to (0.34, 0.42). All three devices had a 5-nm thickness of DPVBi layer and an ultrathin rubrene layer of thickness of 0.05-, 0.10-, and 0.15 nm, respectively. A maximum luminance of 12,900 cd/m2 at 17 V and an efficiency of 5.5 cd/A at 8.5 V were obtained in the devices with 0.05 nm rubrene layer. These devices can be fabricated rather easily due to their simple device structure and they are very appealing to low-cost general lighting applications.

Paper Details

Date Published: 9 October 2005
PDF: 8 pages
Proc. SPIE 5937, Organic Light-Emitting Materials and Devices IX, 59371W (9 October 2005); doi: 10.1117/12.617453
Show Author Affiliations
Hai-Sheng Wu, Minnesota State Univ. (United States)
Zhaoqun Zhou, Iowa State Univ. (United States)
Chang-Hwan Kim, Iowa State Univ. (United States)
Gang Li, Univ. of California, Los Angeles (United States)
Joseph Shinar, Iowa State Univ. (United States)

Published in SPIE Proceedings Vol. 5937:
Organic Light-Emitting Materials and Devices IX
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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