Efficient green coumarin dopants for organic light-emitting devices.
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]
Lee
Meng-Ting
MT
Department of Applied Chemistry & Display Institute, Microelectronics and Information Systems Research Center, National Chiao Tung University, Hsinchu, Taiwan 300, R.O.C.
Yen
Chia-Kuo
CK
Yang
Wen-Ping
WP
Chen
Hsian-Hung
HH
Liao
Chi-Hung
CH
Tsai
Chih-Hung
CH
Chen
Chin H
CH
D000925:Anticoagulants / Q000138:chemical synthesis* / Q000494:pharmacology; D003374:Coumarins / Q000138:chemical synthesis* / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D004355:Drug Stability; D005456:Fluorescent Dyes / Q000737:chemistry*; D008027:Light; D008956:Models, Chemical; D010775:Photic Stimulation; D013814:Thermal Conductivity; D013997:Time Factors
D000925:Anticoagulants; D003374:Coumarins; D005456:Fluorescent Dyes; C030123:coumarin