Molecular Design on Highly Efficient White Electroluminescence from a Single‐Polymer System with Simultaneous Blue, Green, and Red Emission

Abstract

A highly efficient white electroluminescent polymer with simultaneous blue, green, and red emission is reported, developed using a dopant/host strategy by covalently attaching both a green- and a red-light-emitting dopant to the side chain of a blue-light-emitting polymer host (see figure). In a single-layer device a maximum luminance efficiency of 7.3 cd A–1 with CIE coordinates of (0.31,0.32) is achieved.