A Study on Single-Layered White Organic Light-Emitting Diodes Based on Co-Host System Using Solution Process

作者：Kim Beomjin; Park Youngil; Shin Hwangyu; Lee Jiwon; Park Jongwook^*

来源：Journal of Nanoscience and Nanotechnology, 2011, 11(8): 7508-7511.

DOI：10.1166/jnn.2011.4842

• White Organic Light-Emitting Diodes
• WOLEDs
• Co-Host
• Solution Process

Two color white organic light-emitting diode (WOLED) that used a co-host system in a solution process method was prepared. A device configuration is ITO/PEDOT:PSS (40 nm)/emitting layer (50 nm)/TPBi (20 nm)/LiF (1 nm)/Al. The emitting layer consists of TATa + alpha-NPB or beta-NPB + DPAVBi (blue dopant) + Rubrene (yellow dopant). The device using alpha-NPB or beta-NPB showed white color of CIE (0.30, 0.40) and (0.29, 0.39), respectively. Device efficiency of alpha-NPB was 3.85 cd/A at 100 mA/cm(2), which is about 15% higher than beta-NPB's.

• 出版日期2011-8