P‐209: Late‐News Poster: Ordered and Coplanar Chain Conformation of Polyfluorenes by Adopting Solvent Vapor Treatment Process for Enhanced Color Purity in Polymer Light Emitting Diode

Abstract

We investigated molecular chain conformation effect in polyfluorenes (PFO) according to film preparation conditions. By using solvent vapor annealing and introducing anisotropic alignment interface, the molecular conformation of the β phase could be effectively enhanced. The electroluminescence properties of the alterative current driven PLED with the β phase-enhanced PFO layer exhibited improved color purity for blue, polarized light emission, and more reliable light-emitting operation owing to the ordered and coplanar molecular chain conformation effects.