Using a double-doping strategy to prepare a bilayer device architecture for high-efficiency red PhOLEDs

作者：Kao Ming Tzu; Hung Wen Yi^*; Tsai Zhen Han; You Hong Wei; Chen Hsiao Fan; Chi Yun; Wong Ken Tsung

来源：Journal of Materials Chemistry, 2011, 21(6): 1846-1851.

DOI：10.1039/c0jm02992k

A simple, bilayered, red phosphorescent organic light-emitting device featuring a doubly-doped emitting layer comprising of the novel hole-transporting host DTAF, the electron-transporting host 27SFBI, and the emitter Os(bpftz)(2)(PPhMe(2))(2) covering the interfacial region provides an unusually high current of ca. 1560 mA cm(-2) at 8.5 V, a maximum brightness of 32 700 cd m(-2), external quantum efficiencies as high as 12.3% (10.9% at 1000 cd m(-2)), and a power efficiency of 13.5 lm W(-1). This concise device architecture is very cost-effective and competitive for practical applications.

• 出版日期2011
• 单位清华大学