title: Low-driving-voltage blue phosphorescent organic light-emitting devices with external quantum efficiency of 30%.
abstract: A homoleptic iridium (iii) tris(pheny-limidazolinate) complex realizes a high EQE of 30%, a low turn-on voltage of 2.5 V, and a small efficiency roll-off in a blue organic light-emitting device (OLED). This device also shows high power efficiencies over 75 lm W(-1) and an ideal light distribution pattern at 100 cd m(-2).
authors: Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan.
authors: Kazuo
authors: K
authors: Udagawa
authors: Hisahiro
authors: H
authors: Sasabe
authors: Cao
authors: C
authors: Cai
authors: Junji
authors: J
authors: Kido
mesh_terms: D003116:Color; D004553:Electric Conductivity; D004579:Electron Transport; D007093:Imidazoles / Q000737:chemistry; D007495:Iridium / Q000737:chemistry; D008027:Light; D049408:Luminescent Agents / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry; D012666:Semiconductors
chemical_list: D007093:Imidazoles; D049408:Luminescent Agents; D009942:Organometallic Compounds; D011725:Pyridines; D007495:Iridium; C029899:imidazole; C023666:pyridine
keywords: blue phosphorescence; high external quantum efficiency; high power efficiency; low driving voltages; organic light-emitting diodes; phenylimidazole ligands