Efficient Green Coumarin Dopants for Organic Light-Emitting Devices
Organic Letters2004Vol. 6(8), pp. 1241–1244
Citations Over TimeTop 10% of 2004 papers
Meng‐Ting Lee, Chia-Kuo Yen, Wenping Yang, Hsian-Hung Chen, Chi‐Hung Liao, Chih-Hung Tsai, Chin H. Chen
Abstract
We have synthesized a new green fluorescent dopant C-545P having incorporated five strategically placed "methyl" steric spacers on the julolidyl ring system. C-545P has good thermal properties and photostability, and when fabricated as a dopant in an Alq(3)-hosted OLED device, it shows notable improvement in luminance efficiency and is more resistant to concentration quenching than C-545T, particularly in the doping concentration range between 1 and 2% v/v, while achieving comparable device stability. [structure: see text]
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