Red Fluorescent Organic Light-Emitting Diodes Using Modified Pyran-containing DCJTB Derivatives

Bulletin of the Korean chemical society

Seung Soo Yoon¹  Jeong Yeon Kim¹  Kum Hee Lee¹  Sung Min Kim¹  Young Kwan Kim¹ 

关键词: OLED;    Red fluorescence;    DCJTB derivatives;    Pyran;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Two red fluorescent DCJTB derivatives (Red 1 and 2) based on modified pyrans were synthesized and their electroluminescent properties were investigated. Multilayered OLEDs were fabricated with the device structure of ITO/ NPB (40 nm)/Red 1, 2 or DCJTB (0.5 or 1%): Alq3 (20 nm)/Alq3 (40 nm)/Liq (2 nm)/Al. All devices exhibited efficient red emissions. In particular, a device containing emitter Red 2 as a dopant in the emitting layer, the maximum luminance was 8737 cd/m2 at 12.0 V, the luminous and power efficiencies were 2.31 cd/A and 1.25 lm/W at 20 mA/cm2, respectively. The peak wavelength of the electroluminescence was 638 nm with the CIE (x,y) coordinates of (0.63, 0.36) at 7.0 V.

【 授权许可】

Unknown