HOST MATERIAL FOR BLUE PHOSPHORESCENT EMITTER, AND ORGANIC THIN FILM AND ORGANIC LIGHT EMITTING DEVICES COMPRISING THE SAME

摘要

The organic thin film and an organic light emitting device comprising the host material for blue phosphorescent same are provided. The blue host material for phosphorescence is coupled a carbazole compound in the vicinity of the central atom, wherein the central atom is a Group 14 element, a carbazole compound bonded to the periphery of the central atom is three or four, wherein the carbazole compound , it includes a carbazole substituted with alkyl groups. The host materials for the blue phosphorescent he will have a high triplet energy (ET) is also excellent in thermal stability and electric mobility. Accordingly, an organic thin film comprising the host material, and an organic light emitting device including the organic thin film may have excellent light emitting efficiency and implement a dark blue (deep blue). ;