High quantum efficiency blue phosphorescent organic light-emitting diodes using 6-position-modified

Chil Won Lee1, Jung-Keun Kim, Sung Hoon Joo

  • 1Department of Polymer Science and Engineering, Dankook University 126, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Korea.