A hole transport material with ortho-linked terphenyl core structure for high power efficiency in blue phosphorescent organic light-emitting diodes

作者：Lee Chil Won; Lee Jun Yeob^*

来源：Organic Electronics, 2014, 15(2): 399-404.

DOI：10.1016/j.orgel.2013.11.037

• ortho Terphenyl
• Blue device
• Phosphorescent organic light emitting diodes
• Driving voltage
• Power efficiency

A hole transport material for use in blue phosphorescent organic light-emitting diodes was developed using an ortho linked terphenyl core structure. The ortho linked terphenyl core was modified with ditolylamine to yield the N-4, N-4, N-4%26quot;, N-4%26quot;-tetra-p-tolyl-[1,1%26apos;:2%26apos;,1%26quot;-terphenyl]- 4,4%26quot;-diamine (TTTDA) hole transport material. TTTDA was compared with common 1,3-bis(N-carbazolyl) benzene (mCP) and showed lower driving voltage and higher power efficiency than mCP. The driving voltage was decreased by as much as 1.5 V and the power efficiency was improved by 25%.

• 出版日期2014-2