ABSTRACT
With the vision toward developing a red light-emitting electroluminescent cell, volatile Eu(TTA)3bipy hybrid organic complexes were synthesized by the solution technique at different pH values (6 to 8 at an interval of 0.5) by maintaining the stoichiometric ratio. Among all the synthesized complexes, the emission intensity was found to be maximum for the complex with pH = 7.0, and the intensity wilted when pH was lowered to 6.0 or raised to 8.0 (at an interval of 0.5), proving that the complex is pH sensitive. Photoluminescence spectra of Eu(TTA)3bipy registered an intense, sharp, and narrow 162emission peak at 614 nm, attributed to the electronic dipole 5D0 7F2 transition. A single-layer electroluminescence cell was designed by sandwiching Eu(TTA)3bipy between indium tin oxide (ITO) and aluminum (Al). Voltage-current characteristics and voltage- brightness characteristics of the developed electroluminescent cell were carried out. The electroluminescence spectra of the developed cell also emit intense red emission at 614 nm, proving its potential as an emissive layer for a multilayer OLED.
