Dibenzo[: B, d] furan and dibenzo [b, d] thiophene molecular dimers as hole blocking materials for high-efficiency and long-lived blue phosphorescent organic light-emitting diodes
Title
Dibenzo[: B, d] furan and dibenzo [b, d] thiophene molecular dimers as hole blocking materials for high-efficiency and long-lived blue phosphorescent organic light-emitting diodes