@article{a43f3c17863b478e80c548ec09a1e427,
title = "Synthesis, photoluminescence and electroluminescence of triphenylphosphine functionalized cyclometalated iridium(III) complexes",
abstract = "Three greenish-blue iridium (III) phosphorescent complexes with the molecular structure of [Ir(pppy)2(PPh3)L] (Hpppy = 2-(4-phenoxyphenyl)pyridine; L = Cl−, NCS−, NCO−) were synthesized and characterized. Their photoluminescence spectra are significantly blue-shifted after introducing the strong-field ancillary ligand triphenylphosphine. These compounds exhibit emission peaks in the range of 474–479 nm in solutions at 298 K with quantum yields up to 0.33. The organic light-emitting diodes (OLEDs) were fabricated by thermal evaporation with complex 3. The best OLED D3 was obtained with turn-on voltage of 4.3 V, maximum luminance of 11931 cd m−2 under 15.7 V, highest luminance efficiency (ηL) as 16.6 cd A−1, power efficiency (ηP) as 12.2 lm W−1 and external quantum efficiency (EQE) as 5.6%.",
keywords = "Crystal structure, Iridium(III) complexes, Organic light-emitting diodes, Phosphorescence, Triphenylphosphine",
author = "Guiping Tan and Liqi Wang and Shoushan Wang and Peng Liu and Hongbo Fan and HO, {Cheuk Lam} and Dongge Ma and WONG, {Wai Yeung}",
note = "Funding Information: G. Tan acknowledges the financial support from the Guangdong Natural Science Foundation (No.2015A030310242) and Guangdong innovation team project for colleges and universities (No. 2016KCXTD023). P. Liu thanks the financial support from the National Natural Science Foundation of China (No.21505019). C.-L. Ho thanks Hong Kong Research Grants Council (HKBU12317216), the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20160531193836532) and the National Natural Science Foundation of China (21504074) for their financial support. W.–Y. Wong acknowledges the financial support from the Hong Kong Research Grants Council (HKBU12304715), Areas of Excellence Scheme, University Grants Committee of HKSAR (AoE/P-03/08), the Hong Kong Polytechnic University (1-ZE1C) and Ms. Clarea Au for the Endowed Professorship (847S). We appreciate Dr. Xiaolong Yang for his help in the analysis of the OLED data. Funding Information: G. Tan acknowledges the financial support from the Y. Wong acknowledges the financial support from the Guangdong Natural Science Foundation (No. 2015A030310242 ) and Guangdong innovation team project for colleges and universities (No. 2016KCXTD023 ). P. Liu thanks the financial support from the National Natural Science Foundation of China (No. 21505019 ). C.-L. Ho thanks Hong Kong Research Grants Council ( HKBU12317216 ), the Science, Technology and Innovation Committee of Shenzhen Municipality ( JCYJ20160531193836532 ) and the National Natural Science Foundation of China ( 21504074 ) for their financial support. W. Hong Kong Research Grants Council ( HKBU12304715 ), Areas of Excellence Scheme, University Grants Committee of HKSAR ( AoE/P-03/08 ), the Hong Kong Polytechnic University ( 1-ZE1C ) and Ms. Clarea Au for the Endowed Professorship (847S). We appreciate Dr. Xiaolong Yang for his help in the analysis of the OLED data. ",
year = "2019",
month = jan,
doi = "10.1016/j.dyepig.2018.08.054",
language = "English",
volume = "160",
pages = "717--725",
journal = "Dyes and Pigments",
issn = "0143-7208",
publisher = "Elsevier BV",
}