High-efficiency and color stable deep-blue organic light-emitting diodes

Author

Park, Jung Sun ; Seo, Ji Hoon ; Koo, Ja Ryong ; Seo, Bo Min ; Lee, Kum Hee ; Park, Jeong Keun ; Yoon, Seung Soo ; Kim, Young Kwan

Author_Institution

Dept. of Inf. Display, Hongik Univ., Seoul, South Korea

fYear

2010

Firstpage

726

Lastpage

727

Abstract

We have demonstrated high-efficiency and color stable deep-blue organic light emitting diodes (OLED) using 4,4´-bis (9-ethyl-3-carbazovinylene)-1,1´ -biphenyl doped in new blue host material as emitting layer. As host change of the doped blue emitter, blue OLED improved efficiency and exhibited color stability. The optimized blue OLED showed the peak external quantum efficiency of 4.72%, luminous efficiency of 5.12 cd/A at 0.08 mA/cm², and Commission Internationale de I´Eclairage coordinates of (0.15, 0.12) at 1000cd/m². This result showed higher efficiency of 1.6 times than control device.

Keywords

doping; organic compounds; organic light emitting diodes; 4,4´-bis (9-ethyl-3-carbazovinylene)-1,1´ -biphenyl; Commission Internationale de I´Eclairage coordinates; blue OLED; color stable deep-blue organic light-emitting diodes; doped blue emitter; high-efficiency organic light emitting diodes; luminous efficiency; peak external quantum efficiency; Chemistry; Current density; Flat panel displays; Fluorescence; Glass; Indium tin oxide; Organic light emitting diodes; Organic materials; Stability; Sun;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanoelectronics Conference (INEC), 2010 3rd International

Conference_Location

Hong Kong

Print_ISBN

978-1-4244-3543-2

Electronic_ISBN

978-1-4244-3544-9

Type

conf

DOI

10.1109/INEC.2010.5424566

Filename

5424566