Light-emitting electrochemical cells based on a solution-processed multilayered device and an anionic iridium (III) complex

The optical and electronic properties of a solution-processed light-emitting electrochemical cell (LEC) based on an anionic iridium (III) complex as the emitter material has been designed and investigated. The obtained multi-layered devices emitted light of a light-green color (CIE, x = 0.29, y = 0.45) at low external applied voltage. The electroluminescent devices fabricated from this anionic iridium complex exhibited a relatively moderate electroluminescent efficiency and a luminance as high as 140 cd/m2 at 7.2 V.