Polyfluorene-based light-emitting diodes using TiOx as an electron injection layer

Abstract

We have fabricated polyfluorene-based polymer light emitting diodes (PLEDs), in which a sol-gel TiOx layer introduced between the polymer and an eutectic alloy Woods metal cathode to increase device performance, maintaining low temperature and low cost fabrication process. The emission of the PFO/TiOx PLEDs showed a red shift of 11nm with respect to the PLEDs without TiOx.