In:
Journal of Nanoscience and Nanotechnology, American Scientific Publishers, Vol. 8, No. 9 ( 2008-09-01), p. 4607-4610
Abstract:
High-efficiency white organic light-emitting diodes (WOLEDs) were fabricated with two emissive layers and an exciton blocking layer (EBL) was sandwiched between two phosphorescent dyes, bis(3,5-difluoro-2-(2-pyridyl)phenyl-(2-carboxypyridyl) iridium III (FIrpic) as the blue emission
and iridium(III) bis(5-acetyl-2-phenylpyridinato-N,C2′) acetylacetonate ((acppy) 2 Ir(acac)) as the red emission. This EBL effectively prevented a triple–triple energy transfer between the two phosphorescent emissive layers with blue and red emission. The white device
showed Commission Internationale De L'Eclairage (CIE x,y ) coordinates of (0.33, 0.42) at 22400 cd/m 2 , a maximum luminance of 27300 cd/m 2 at 13.2 V, and a maximum luminous efficiency of 26.9 cd/A.
Type of Medium:
Online Resource
ISSN:
1533-4880
DOI:
10.1166/jnn.2008.IC29
Language:
English
Publisher:
American Scientific Publishers
Publication Date:
2008
SSG:
11
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