Single-emission-layer white organic light-emitting devices: Chromaticity and colour-rendering consideration

Chia Chan Fan, Ming Hong Huang, Wei Chieh Lin, Hao Wu Lin*, Yun Chi, Hsin-Fei Meng, Teng Chih Chao, Mei Rurng Tseng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


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 (Du′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/m2.

Original languageEnglish
Pages (from-to)517-523
Number of pages7
JournalOrganic Electronics
Issue number2
StatePublished - 1 Jan 2014


  • Colour-rendering index
  • Daylight locus
  • Organic light-emitting diodes
  • Solution-processed

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