Mixed Solution System Containing Anthracene and Stilbene Derivatives for an Efficient Green Fluorescent Electrogenerated Chemiluminescence Cell

Electrogenerated chemiluminescence (ECL) cells are promising for applications in unique displays due to their simple structure, but further improvements in cell performance have been desired. Herein, we successfully enhanced the luminescent characteristics of the green fluorescent ECL cell by introducing a stilbene derivative as a redox mediator into an anthracene-9,10-diamine derivative solution. 9,10-Bis[phenyl(m-tolyl)-amino]anthracene (TPAA) was used as a luminescent material, while (E,E)-1,4-bis[4-[bis(4-methoxyphenyl)amino]styryl]benzene (TOP-HTM-α1) was used as the mediator. The maximum luminance and current efficiency of the cell with a configuration of indium tin oxide anode/mixed solution/fluorine-doped tin oxide cathode reached 191 cd m−2 and 1.96 cd A−1, respectively, which are the highest values ever reported in green ECL cells. Moreover, the cell showed a low turn-on voltage (defined as the voltage at 0.01 cd m−2) of 2.5 V, which is close to the singlet emission energy of TPAA. We believe that our findings in this study could contribute to the development of advanced ECL display devices.