Non-doped white organic light-emitting diodes based on ultra-thin emitting layer with aggregation-induced emission

✍ Scribed by Wang, Xu-Peng ;Qian, Yan ;Zhu, Tong-Jun ;Cai, Min-Min ;Mi, Bao-Xiu ;Jiang, Xue-Yin ;Gao, Zhi-Qiang ;Huang, Wei ;Zhang, Zhi-Lin

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 333 KB
• Volume: 209
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.201127297

✦ Synopsis

Abstract

Based on two aggregation‐induced light‐emitting materials, N‐(4‐(benzo[d]thiazol‐2‐yl)‐3‐hydroxyphenyl) anthracene‐9‐carboxamide for yellow emission and N‐(4‐(benzo[d]oxazol‐2‐yl)‐4‐tert‐butylbenzamide for Blue emission, non‐doped white organic light‐emitting diodes have been realized. The maximum efficiency of 2.2 cd/A and the Commission International de L'Eclairage coordinates of (0.32, 0.33) are achieved. Moreover, the device efficiency and color coordinates change slightly with increasing driving current density up to 500 mA/cm^2^, showing a good color stability and a small efficiency roll‐off. This may due to both better confinement of excitons within the emitting layer and the utilization of a thin layer of emitting material with aggregation‐induced emission.