A Comparative Study on the Optical Properties of Single-Layered White OLED Based on Multi-Host, Dopant System

作者：Kim Seungho; Kim Beomjin; Lee Jaehyun; Park Jongwook^*

来源：Molecular Crystals and Liquid Crystals, 2014, 597(1): 107-113.

DOI：10.1080/15421406.2014.932245

• white organic light-emitting diodes
• solution process
• co-host
• WOLEDs

Two color white EML is proposed by using blending and spin-coating method through a co-host/dopant system. Device performances were systematically compared based on the optical property of with/without interlayer PVK. When 1-[1,1%26apos;;3%26apos;,1%26apos;%26apos;]Terphenyl-5%26apos;-yl-6-(10-[1,1 %26apos;;3 %26apos;,1 %26apos;%26apos;] terphenyl-5 %26apos;-yl-anthracen-9-yl)-pyrene (TP-AP-TP) is a blue emitter with high luminance and external quantum efficiency, NPB is used as a co-host material which has HTL property and wide band gap like a blue emitter. DPAVBi and Rubrene were each used as blue dopant and yellow dopant. Luminance efficiency of the device used interlayer was 4.31cd/A, a value 30% higher than without interlayer (3.31 cd/A) at 10mA/cm(2).

• 出版日期2014-7-3