Highly Efficient Polymer White-Light-Emitting Diodes Based on Lithium Salts Doped Electron Transporting Layer

Abstract

A Li(2)CO(3)-doped water/alcohol-soluble neutral conjugated polymer is used as the electron-injection layer in a solution-processed polymer OWLED with very high efficiency. A maximum forward viewing luminous efficiency of 36.1 cd A(-1) and a power efficiency of 23.4 lm W(-1) were achieved, values comparable to those reported I-or the state-of-the-art vacuum deposited small-molecule OWLEDs.