Diphenylphosphine oxide-based host materials for green phosphorescent organic light-emitting devices

The two host materials (SPDPPO and SBPBDPPO) were designed and synthesized. The green PhOLEDs using Ir(ppy)3 as phosphorescent dopants were fabricated and hosted by SPDPPO display performances with ηcmax of 36.5 cd/A and low efficiency roll-off.141