A stable blue host material for organic light-emitting diodes

作者：Kim Myeong Suk; Choi Byoung Ki; Lee Tae Woo; Shin Dongwoo; Kang Sung Kee; Kim Jong Min; Tamura Shinichiro; Noh Taeyong^*

来源：Applied Physics Letters, 2007, 91(25): 251111.

DOI：10.1063/1.2827186

We have developed a high performance fluorescent host material, 6-anthracene-9-yl-2,3-di-p-tolyl benzo[b]thiophene (ATB), for blue organic light-emitting diodes. ATB formed a stable amorphous solid state film with a high glass transition temperature (T(g)=116 degrees C). The multilayer devices fabricated using ATB as a blue host material showed higher power efficiency (6.4 lm/W at 1000 cd/m(2)) than the conventional device using 2-tert-butyl-9,10-di(2-naphthyl)anthracene (TBADN) (4.3 lm/W at 1000 cd/m(2)). The half lifetime of the ATB device (6480 h at 1000 cd/m(2)) was also enhanced compared to the TBADN device (5341 h at 1000 cd/m(2)).

• 出版日期2007-12-17