Patent ID: 7253017

Claim:
A method for making an optoelectronic device, the method comprising: forming a porous film on a substrate by a templation technique, wherein the porous film includes interconnected pores, wherein the pores are substantially uniformly distributed and wherein interconnections of the pores are found within the film, wherein the pores have diameters of between about 1 nm and about 100 nm, and wherein neighboring pores are separated by between about 1 nm and about 100 nm; substantially filling the pores in the porous film with a pore-filling material, removing the porous template film while leaving behind the pore-filling material that substantially filled the interconnected pores of the film, thereby forming a nanoscale grid network comprising interconnected structures of the pore-filling material that are distributed in a substantially uniform fashion with neighboring structures separated by a distance of between about 1 nm and about 100 nm, wherein the structures have diameters of between about 1 nm and about 100 nm; and incorporating a network-filling material into the nanoscale grid network, whereby the network-filling material substantially fills the spaces between the structures in the nanoscale grid network, wherein the nanoscale grid network and the network-filling material have complementary charge-transfer properties with respect to each other to provide a charge-splitting network in the optoelectronic device.