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Homoleptic triscyclometalated iridium(III) complex Ir(dbi)3 was used as a dopant for sky blue phosphorescent organic light-emitting diodes (PHOLEDs). Its photophysical, thermal, electrochemical properties as well as the device performances were investigated. Ir(dbi)3 exhibited high quantum yield of 0.52 in solution at room temperature. A maximum current efficiency and external quantum efficiency (EQE)...
A series of structurally isomeric carbazole/triazole (TAZ)-based bipolar host materials 1–4 were designed and synthesized. These new materials were found to exhibit wide energy gaps (E g : 3.29–3.52eV), high triplet energies (E T : 2.56–2.76eV), high thermal stability (T d : 426–454°C), high glass-transition temperatures (T g : 116–156°C) and excellent film-forming...
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