Patent ID: 7582707

Claim:
A hole injection or hole transport film for an electronic device comprising at least one dopant, a first conjugated polymer having a conductivity of greater than about 10 −7 S/cm and a second conjugated polymer having a conductivity greater than about 10 −7 S/cm wherein: i) the film has a conductivity which exceeds the weight averaged value of the first and second conjugated polymers when measured using a four point probe method, ii) after annealing the film at a temperature of about 200° C. for 2 minutes in a nitrogen atmosphere, the film has a conductivity which exceeds the weight averaged value of the first and second conjugated polymers; iii) at least one of said first and second polymers comprises a polythiophene, iv) the first conjugated polymer comprises at least one member selected from the group consisting of poly(aniline)sulfonate, and poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonic acid), and v) the second conjugated polymer comprises at least one member selected from the group consisting of poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonic acid), poly(pyrrole) doped with an organic acid, and poly(thieno[3,4-b]thiophene) doped with poly(styrene sulfonic acid) and the first and second conjugated polymers are independently selected.