Comparison of dye doping and ultrathin emissive layer in white organic light-emitting devices with dual emissive layers

Xu Wang; Yige Qi; Junsheng Yu

doi:10.1117/12.2067879

2 September 2014 Comparison of dye doping and ultrathin emissive layer in white organic light-emitting devices with dual emissive layers

Xu Wang, Yige Qi, Junsheng Yu

Author Affiliations +

Proceedings Volume 9284, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronics Materials and Devices for Sensing and Imaging; 92840J (2014) https://doi.org/10.1117/12.2067879
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

White organic light-emitting devices (WOLEDs) with combined doping emissive layer (EML) and ultrathin EML have been fabricated to investigate the effect of each EML on the electroluminescent (EL) performance of the WOLEDs. Through tailoring doping concentration of bis[(4,6-difluorophenyl)-pyridinato-N,C2’](picolinate) iridium(III) (FIrpic) and thickness of ultrathin bis[2-(4-tertbutylphenyl)benzothiazolato-N,C2’] iridium (acetylacetonate) [(tbt)₂Ir(acac)] EML, it is found that the change in the doping ratio of FIrpic significantly influenced the EL efficiencies and spectra, while the alteration of ultrathin EML thickness had much milder effect on the EL performance. The results indicated that ultrathin EML is in favor of reproducibility in mass production compared with doping method.

Citation Download Citation

Xu Wang, Yige Qi, and Junsheng Yu "Comparison of dye doping and ultrathin emissive layer in white organic light-emitting devices with dual emissive layers", Proc. SPIE 9284, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronics Materials and Devices for Sensing and Imaging, 92840J (2 September 2014); https://doi.org/10.1117/12.2067879

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