Organic Light Emitting (OLED) have focused on developing stability, efficiency and lifetime for next-generation phosphorescent OLED (PHOLED). Herein, we designed and synthesized a new Ir(III) NHC complexes with replace the hydrogen to deuterium compounds, mer-Ir(D2)3, mer-Ir(D5)3 and mer-Ir(D7)3, wh...
Organic Light Emitting (OLED) have focused on developing stability, efficiency and lifetime for next-generation phosphorescent OLED (PHOLED). Herein, we designed and synthesized a new Ir(III) NHC complexes with replace the hydrogen to deuterium compounds, mer-Ir(D2)3, mer-Ir(D5)3 and mer-Ir(D7)3, which exhibited bright, deep-blue emission, with emission maximum between 450 and 470 nm. The three meridional deepblue isomers are used to the best of our knowledge, unique for affect the performance of OLED, which is unusual for this class of emitters comprising bulky, sterically demanding ligands. In this study, the mer-Ir(D2)3, mer-Ir(D5)3 and mer-Ir(D7)3 as dopant, TSPO1 and TPBi as host exhibited high efficiency of 19.6% CIE(x, y) coordinates of (0.156, 0.104) and maximum brightness (Lmax) of 1113 cd m-2. Moreover, another materials mer-Ir(D5)3 and mer-Ir(D7)3, demonstrates an EQE of 19.8% and 20.2%, respectively and CIE(x, y) coordinates of (0.156, 0.104) and (0.160, 0.116) at a 1:1 doping ratio. The findings of this research suggest that the new dopant of mer-Ir(D2)3, mer-Ir(D5)3 and mer-Ir(D7)3 were a promising candidate solution-proecess the highly efficient and stable for PHOLED.
Organic Light Emitting (OLED) have focused on developing stability, efficiency and lifetime for next-generation phosphorescent OLED (PHOLED). Herein, we designed and synthesized a new Ir(III) NHC complexes with replace the hydrogen to deuterium compounds, mer-Ir(D2)3, mer-Ir(D5)3 and mer-Ir(D7)3, which exhibited bright, deep-blue emission, with emission maximum between 450 and 470 nm. The three meridional deepblue isomers are used to the best of our knowledge, unique for affect the performance of OLED, which is unusual for this class of emitters comprising bulky, sterically demanding ligands. In this study, the mer-Ir(D2)3, mer-Ir(D5)3 and mer-Ir(D7)3 as dopant, TSPO1 and TPBi as host exhibited high efficiency of 19.6% CIE(x, y) coordinates of (0.156, 0.104) and maximum brightness (Lmax) of 1113 cd m-2. Moreover, another materials mer-Ir(D5)3 and mer-Ir(D7)3, demonstrates an EQE of 19.8% and 20.2%, respectively and CIE(x, y) coordinates of (0.156, 0.104) and (0.160, 0.116) at a 1:1 doping ratio. The findings of this research suggest that the new dopant of mer-Ir(D2)3, mer-Ir(D5)3 and mer-Ir(D7)3 were a promising candidate solution-proecess the highly efficient and stable for PHOLED.
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