Mixed spacer effect of hybrid white organic light-emitting diodes for reduced efficiency roll-off

The authors have demonstrated mixed spacer (MS) effect of hybrid white organic light-emitting diodes (HWOLEDs) for reduced efficiency roll-off using fluorescent blue emitter and phosphorescent red emitter. The optimized HWOLED with MS ratio (1:3) which was 4,4',4"tris (N-carbazolyl) triphe...

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Bibliographic Details
Main Authors: Ji Hoon Seo, Jung Sun Park, Ja Ryong Koo, Bo Min Seo, Kum Hee Lee, Seung Soo Yoon, Young Kwan Kim
Format: Conference Proceeding
Language:English
Subjects:
Current density
Fabrication
Flat panel displays
Fluorescence
Glass
Indium tin oxide
Organic light emitting diodes
Organic materials
Phosphorescence
Voltage
Online Access:Request full text
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Summary:The authors have demonstrated mixed spacer (MS) effect of hybrid white organic light-emitting diodes (HWOLEDs) for reduced efficiency roll-off using fluorescent blue emitter and phosphorescent red emitter. The optimized HWOLED with MS ratio (1:3) which was 4,4',4"tris (N-carbazolyl) triphenylamine and bis-(2-methyl-8-quinolinolate)-4-(phenylphenolato)aluminium exhibited a maximum luminance of 42200 cd/m 2 at 8.5 V, external quantum and power efficiencies of 10.3% and 19.0 lm/W, and Commission Internationale de I'Eclairage coordinates of (0.40, 0.41) at 1 000 cd/m 2 .
ISSN:2159-3523
DOI:10.1109/INEC.2010.5424940