US Patent 7994422 - Photoelectrochemical cell with CNTs

http://www.freepatentsonline.com/7994422.html

This patent from Samsung teaches a way to increase the efficiency of energy conversion in dye-sensitized solar cells by using carbon nanotubes. Claim 1 reads:

1. A structure, comprising:

a metal oxide semiconductor particle comprising a pore;

a catalytic metal particle arranged within the pore of the porous metal oxide semiconductor particle, a size of the catalytic metal particle being 5 nm to 100 nm; and

a carbon nanotube arranged within the pore of the metal oxide semiconductor particle, wherein the carbon nanotube being grown based on the catalytic metal particle arranged within the pore of the porous metal oxide semiconductor particle.