A pure red organic light-emitting diode based on a luminescent derivative of tris(2,4,6-trichlorotriphenyl)methyl radical

作者：Gao, Yingchang; Obolda, Ablikim; Zhang, Ming; Li, Feng^*

来源：Dyes and Pigments, 2017, 139: 644-650.

DOI：10.1016/j.dyepig.2016.12.06

• ACTIVATED DELAYED FLUORESCENCE
• TRIPLET-TRIPLET ANNIHILATION
• HIGHLY EFFICIENT
• ELECTROLUMINESCENCE EFFICIENCY
• EXCITED-STATE
• PROPORTION
• MECHANISM
• EMISSION
• EMITTERS
• DEVICES

A novel derivative of Tris(2,4,6-trichlorotriphenyl)methyl radical was synthesized and used as the emitter of an organic light-emitting diode. Stable electroluminescent (EL) spectra at the full-range driving voltages and pure red color were obtained through optimizing the device structure. The Com-mission Internationale de L' Eclairage (CIE) coordinate of the device at 7 V is (0.667, 0301), which is very close to the red standard CIE coordinate (0.670, 0330) of NTSC. The maximum external quantum effi-ciency of the device is 2.4%, and the formation ratio of doublet exciton is nearly 100%.

• 出版日期2017-4
• 单位超分子结构与材料国家重点实验室; 吉林大学