Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (10): 2068-2073.doi: 10.3866/PKU.WHXB20090937

• ARTICLE • Previous Articles     Next Articles

Properties of White and Yellow Organic Light-Emitting Devices Based on (E)-2-(2-(9-(4-Methoxyphenyl)-9H-Carbazol-3-yl) Quinolato-Zinc

DING Gui-Ying, JIANG Wen-Long, WANG Jin, OUYANG Xin-Hua, ZENG He-Ping   

  1. College of Information Technology, Jilin Normal University, Siping 136000, Jilin Province, P. R. China|School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, P. R. China
  • Received:2009-05-04 Revised:2009-06-07 Published:2009-09-29
  • Contact: JIANG Wen-Long, ZENG He-Ping E-mail:jiang_wl@163.com; hpzeng@scut.edu.cn

Abstract:

We investigated the electroluminescence (EL) characteristics of a novel yellow emitting material: (E)-2-(2-(9-(4-methoxyphenyl)-9H-carbazol-3-yl)quinolato-zinc (MoBCzHQZn). The results demonstrated the MoBCzHQZn with strong yellow emitting and hole-transporting ability. Based on these performances, a series of un-doping white and doping yelloworganic light-emitting devices (OLEDs) were fabricated. The white device was fabricated as follows: ITO/2T-NATA(20 nm)/MoBCzHQZn(25 nm)/NPBX(13 nm)/BCP(8nm)/Alq3(34 nm)/LiF(0.5 nm)/Al, white OLEDs were obtained with Commission International de L'Eclairage coordinates of (0.3719, 0.3275), the maximum luminance was 3414 cd·m-2 at an applied voltage of 15 V and the maximum luminous efficiency was 1.69 cd·A-1 at an applied voltage of 14 V. The yellow device was fabricated as follows: ITO/2T-NATA(20 nm)/CBP:6% Ir(ppy)3:10% MoBCzHQZn(25 nm)/TPBi:6% Ir(ppy)3(47 nm)/LiF (0.5 nm)/Al, yellow OLEDs were obtained with Commission International de L'Eclairage coordinates of (0.3590, 0.5787), the maximumluminance was 11073 cd·m-2 at an applied voltage of 15 V and the maximumluminous efficiency was 2.51 cd·A-1 at an applied voltage of 9 V.

Key words: Organic light-emitting devices, Hole-transporting emitter material, Luminance

MSC2000: 

  • O644