| 초록 |
Highly efficient green phosphorescent organic light-emittig diodes were developed using a carbazole modified bidibenzofuran compound. 2,2’-di(carbazole-9-yl)-4,4’-bidibenzo[b,d]furan was synthesized by coupling two 9-(dibenzo[b,d]furan-2-yl)carbazole moieties to obtain good thermal stability and high triplet energy. The bidibenzofuran host material showed good device performances such as high quantum efficiency of 20.6% and current efficiency of 80.2 cd/A due to good charge transport properties. |
