Patent ID: 7700008

Claim:
A buffer composition consisting essentially of semiconductive oxide particles wherein the semiconductive oxide particles comprise a bimetallic oxide selected from indium-tin oxide (“ITO”), indium-zinc oxide (“IZO”), gallium-indium oxide, and zinc-antimony double oxide and a fluorinated acid polymer wherein the fluorinated acid polymer has a formula according to Formula XV: where j≧0, k≧0 and 4≦(j+k)≦199, Q 1 and Q 2 are F or H, R f 2 is F or a perfluoroalkyl radical having 1-10 carbon atoms either unsubstituted or substituted by one or more ether oxygen atoms, h=0 or 1, i=0 to 3, g=0 or 1, and E 4 is H or an alkali metal, wherein the buffer composition has a work-function greater than 5.0 eV.