Solid-State White Light-Emitting Electrochemical Cells Using Iridium-Based Cationic Transition Metal Complexes
Journal
Journal of the American Chemical Society
Journal Volume
130
Journal Issue
11
Pages
3413-3419
Date Issued
2008-01
Author(s)
Abstract
White electroluminescent (EL) emission from single-layered solid-state light-emitting electrochemical cells (LECs) based on host-guest cationic iridium complexes has been successfully demonstrated. The devices show white EL spectra (Commission Internationale de l'Eclairage coordinates ranging from (x, y) = (0,45, 0.40) to (0.35, 0.39) at 2,9-3.3 V with high color rendering indices up to 80. Peak external quantum efficiency and peak power efficiency of the white LEC reach 4% and 7.8 lm/W, respectively. These results suggest that white LECs based on host-guest cationic transition metal complexes may be a promising alternative for solid-state lighting technologies. © 2008 American Chemical Society.
SDGs
Type
journal article