Title: Single-emission-layer white organic light-emitting devices: Chromaticity and colour-rendering consideration
Authors: Fan, Chia-Chan
Huang, Ming-Hong
Lin, Wei-Chieh
Lin, Hao-Wu
Chi, Yun
Meng, Hsin-Fei
Chao, Teng-Chih
Tseng, Mei-Rurng
Institute of Physics
Keywords: Solution-processed;Organic light-emitting diodes;Colour-rendering index;Daylight locus
Issue Date: 1-Feb-2014
Abstract: The chromaticity and colour-rendering capability of solution-processed single emission layer (EML) white organic light-emitting diodes (W-OLEDs) can be precisely tuned by manipulating the dopant compositions in the EMLs. In this work, we numerically modelled binary, ternary, and quaternary doping single EML W-OLEDs. The correlated colour temperature (CCT), colour-rendering index (CRI), and spectral designs were correlated. The simulation predicted that the quaternary doping system possesses the best chromaticity performance. The corresponding binary, ternary and quaternary doping single EML W-OLEDs were fabricated and characterised to verify the calculation. The solution-processed quaternary doping W-OLEDs were designed with CRI values up to 85, deviations from the Planckian locus (D-u'v') as low as +0.0009, an EQE of 13.7%, a power efficacy of 14.7 lm/W and current efficiency of up to 24.9 cd/A at 1000 cd/m(2). (C) 2013 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.orgel.2013.11.040
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2013.11.040
Volume: 15
Issue: 2
Begin Page: 517
End Page: 523
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