Highly Efficient Blue-Light-Emitting Diodes Based on Styrylamine Derivatives End-capped with a Diphenylvinyl Group

Bulletin of the Korean chemical society

Seung Soo Yoon¹  Kum Hee Lee¹  Seul Ong Kim¹  Sunwoo Kang¹  Jin Yong Lee¹  Young Kwan Kim¹  Ji Hoon Seo¹ 

关键词: OLEDs;    Blue emission;    Styrylamine;    Diphenylvinyl group;    Horner-Wadsworth-Emmons reaction;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

In this paper, we reported the synthesis and electroluminescent properties of blue fluorescent styrylamine derivatives end-capped with a diphenylvinyl group. A new series of styrylamine derivatives have been synthesized via the Horner- Wadsworth-Emmons reaction. To explore electroluminescent properties of these molecules, multilayer organic lightemitting devices with the configuration of ITO/NPB/1-5 doped in MADN/Bphen/Liq/Al were fabricated. All devices exhibited blue emissions with good EL performances. Among those reported herein, the device using dopant 5 exhibited a maximum luminance of 24,000 cd/m2 at 11.0 V, a luminous efficiency of 12.5 cd/A at 20 mA/cm2, a power efficiency of 6.50 lm/W at 20 mA/cm2, and CIEx,y coordinates of (x = 0.173, y = 0.306) at 8.0 V, all of which demonstrate the superiority of these materials in blue OLEDs.

【 授权许可】

Unknown