A Tunable Emission Prepared by Proton-Induced Fluorescent Color Change Materials for a Potential Application in PLEDs

作者:Liu, Wei Ting*; Wang, Po Hsun; Lee, Hsu Feng; Huang, Yi Chiang; Huang, Wen Yao
来源:ECS Journal of Solid State Science and Technology, 2013, 2(7): R142-R147.
DOI:10.1149/2.018307jss

摘要

In this thesis, proton-chemically induced emission tuning was used for the definition of pixels emitting three primary colors of green, orange, and red. This study used the benzenesulfonic acid doped C545T in Chlorobenzene. The changed color of C545T was observed by adding benzensulfonic acid. Furthermore, we explored the reversible phenomenon of protonation/deprotonation. The chlorobenzene solution of C545T in the neutral state emits a green fluorescence (L1). When benzenesulfonic acid was added to the C545T solution in chlorobenzene, C545T was protonated and the protonation level increased with increasing the benzenesulfonic acid concentration. The interaction of the protonation acid and C545T resulted in acid-induced quenching. When the ratio of doping between benzenesulfonic and C545T was 1:0.8, light changed form protonation C545T to orange (L2). When the ratio of adding benzenesulfonic acid lasted up to 1:1.6, the C545T in Chlorobenzene finished reacting with the benzensulfonic acid to produce mostly protonated C545T, and the color of Chlorobenzene changed into a red one (L3), leading to a wave of redshift. The absorption and the emission of L1, L2, and L3 were protonation-chemically induced changes. L1, L2, and L3 were doped in the blue PLED device to achieve a tunable emission module.