1,3-Diphenyl-5-(9-phenanthryl)-2-pyrazoline( DPPhP):An Excellent Hole-Transport Material for Use in Organic Light-Emitting Diodes

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2002,（10）
• 页码范围: 929-932
• 页数: 4页
• 语种: 英文

摘要

An excellent hole-transport material, 1,3-diphenyl-5-(9-phenanthryl)-2-pyrazoline (DPPhP) for OLEDs was studied.This compound not only offers high glass transition temperature ( Tg = 96 C), good film forming ability, and high HOMO energy level, but also displays excellent hole-transport property.The electroluminescent device with a simple structure of ITO/DPPhP (60 nm)/AlQ (60 nm)/LiF (0.8 nm)/Al shows an external quantum efficiency as high as 1.6%.