Highly efficient orange phosphorescent organic light-emitting diodes based on an iridium(iii) complex with diethyldithiocarbamate (S^S) as the ancillary ligand. Issue 68 (5th July 2016)

• Record Type: Journal Article
• Authors: Mei, Qunbo; Chen, Chen; Tian, Ruqiang; Yang, Min; Tong, Bihai; Hua, Qingfang; Shi, Yujie; Fan, Quli; Ye, Shanghui
• Is Part Of: RSC advances. Volume 6:Issue 68(2016)
• Page Start: 64003
• Page End: 64008
• Publication Date: 2016-07-05
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra12529h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A novel iridium(iii ) complex Ir(dpp)2 (dta) with diethyldithiocarbamate (S^S) as the ancillary ligand was synthesized and characterized. The polymer organic light-emitting device based on Ir(dpp)2 (dta) has been fabricated. Abstract : A novel iridium(iii ) complex Ir(dpp)2 (dta) (dppH = 4, 6-diphenyl pyrimidine; dta = diethyldithiocarbamate) was synthesized and characterized. The complex displayed strong emissions at 575 nm with high photoluminescence quantum yields of 86% in the doped poly(methyl methacrylate) (PMMA) film at 1% doping concentration. The orange-yellow polymer light-emitting devices (PLEDs) based on Ir(dpp)2 (dta) as a triplet emitter with different concentrations ( x = 1%, 3%, 5%, 7% and 10%) doped in a polymeric host 70% poly( N -vinylcarbazole) (PVK) + 30% 2, 2′-(1, 3-phenylene)bis[5-(4- tert -butylphenyl)-1, 3, 4-oxadiazole] (OXD-7) were fabricated with high luminance and efficiency. The device achieved an ideal turn-on voltage (<4 V) and superior luminance (81 918 cd m −2 ) as well as electroluminescence efficiency (30.12 cd A −1 ) at 3% doping concentration.