A conjugated, neutral surfactant as electron-injection material for high-efficiency polymer light-emitting diodes

A novel, conjugated, neutral surfactant, PFN-OH, has been developed for significant use as an efficient electron-injection layer in fabricating highly efficient PLEDs. PFN-OH possess good conductivity and outstanding electron injection-ability from high-work-function metals. The surfactant-like side chain also renders good solubility in alcohol-based solvents and efficient electron injection from high-work function metals. The electron-injection ability of the polymer electrolytes is strongly influenced by the nature of their counter-ions. These advantages benefit the fabrication of flat-panel display with an improved lifetime. The combined fabrication process and improved device performance clearly demonstrate the potential of using these neutral conjugated surfactants for high efficiency PLEDs.