Color optimization of single emissive white OLEDs via energy transfer between RGB fluorescent dopants
- Kim, Nam Ho
- Kim, You-Hyun
- Yoon, Ju-An
- Lee, Sang Youn
- Ryu, Dae Hyun
- Wood, Richard
- Moon, C.-B.
- Kim, Woo Young
Publication date
November 2013
DOI Publisher
The Authors. Published by Elsevier B.V. ISSN
0022-2313 Citation count (estimate)
11Abstract
AbstractThe electroluminescent characteristics of white organic light-emitting diodes (WOLEDs) were investigated including single emitting layer (SEL) with an ADN host and dopants; BCzVBi, C545T, and DCJTB for blue, green and red emission, respectively. The structure of the high efficiency WOLED device was; ITO/NPB(700Å)/ADN: BCzVBi-7%:C545T-0.05%:DCJTB-0.1%(300Å)/Bphen(300Å)/Liq(20Å)/Al(1200Å) for mixing three primary colors. Luminous efficiency was 9.08cd/A at 3.5V and Commission Intenationale de L’eclairage (CIEx,y) coordinates of white emission was measured as (0.320, 0.338) at 8V while simulated CIEx,y coordinates were (0.336, 0.324) via estimation from each dopant's PL spectrum
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