Triangulene-based Efficient Exciton Blocking Material for Organic Light-emitting Diodes

• DOI: 10.1246/cl.180314
• Publication Date: 2018-05-11T21:00:26Z
• Authors: Hajime Gotoh; Soichiro Nakatsuka; Yasuhiro Kondo; Yasuyuki Sasada; Takuji Hatakeyama
• Keywords: Blocking (statistics)

Phosphorus-centered 4,8,12-triazatriangulene was identified as an efficient exciton blocking material for phosphorescent organic light-emitting diodes (PHOLEDs). The external quantum efficiency values of Ir(ppy)3-based green PHOLEDs were greatly improved to 20% at 1000 cd m−2.