A high efficiency blue‐light‐emitting diode based on novel ladder poly(<i>p</i>‐phenylene)s

Abstract

Low energy losses due to non‐radiative decay are an important step towards high‐efficiency organic LEDs. The rigid, regioregular structure of the novel ladder poly( p ‐phenylene)s reported here lead to a reduction in such losses and to potentially interesting internal LED efficiencies of 1%. The effect on the efficiency of varying the length of the spacers in the structure is examined.