Bridged triphenylamines as novel host materials for highly efficient blue and green phosphorescent OLEDs

Abstract
Two bridged triphenylamine–triphenylsilane (BTPASi) hybrids have been designed as host materials for phosphorescent OLEDs; devices with the novel host materials achieve maximum external quantum efficiencies as high as 15.4% for blue and 19.7% for green electrophosphorescence.