Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65839
Title: Homoleptic thiazole-based IrIII phosphorescent complexes for achieving both high EL efficiencies and an optimized trade-off among the key parameters of solution-processed WOLEDs
Authors: Guo, H
Zhao, J
Tian, Z
Wu, Y
Liu, B
Dang, F
Yang, X
Zhou, G
Wu, Z
Wong, WY 
Issue Date: 2017
Publisher: Royal Society of Chemistry
Source: Journal of materials chemistry C, 2017, v. 5, no. 1, p. 208-219 How to cite?
Journal: Journal of materials chemistry C 
Abstract: Two homoleptic thiazole-based IrIII phosphorescent emitters, Ir-3Tz1F and Ir-3Tz2F, with fluorinated 2-phenylthiazole-type ligands were designed and prepared. Their thermal stability, and photophysical and electrochemical properties, as well as electroluminescent (EL) performances in both monochromic OLEDs and solution-processed WOLEDs were investigated. When doped in monochromic OLEDs made by vacuum deposition, Ir-3Tz1F gave the maximum EL efficiencies with ηL of 56.2 cd A-1, ηext of 15.8% and ηp of 50.2 lm W-1. Critically, solution-processed WOLEDs based on Ir-3Tz1F with three primary colors could achieve an excellent trade-off among the stable balanced white EL spectra, a high EL efficiency and a high color rendering index (CRI). The optimized solution-processed WOLED exhibited very attractive EL efficiencies of 33.4 cd A-1, 16.5% and 30.6 lm W-1, while maintaining both a high CRI of ca. 80 and very stable Commission Internationale de L'Eclairage (CIE) coordinates in a wide driving voltage range from 4 V to 11 V.
URI: http://hdl.handle.net/10397/65839
ISSN: 2050-7526
EISSN: 2050-7534
DOI: 10.1039/c6tc04011j
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