Electrode, method of making same, photoelectric transfer element, method of manufacturing same, electronic device and method of manufacturing same

Abstract

An electrode is composed of a carbon carrying a metal and a binder polymer, and it is used as a counter electrode of a dye-sensitized solar cell. The metal carried by carbon is at least one kind of metal selected from the group consisting of Pt, Ru, Co, Ti, Ni, Al and Au. The carbon is needle-like carbon, fullerene, carbon nanotube, conductive carbon black, or the like, and its specific surface area is equal to or larger than 100 m 2 /g.

1 . A photoelectric transfer element comprising an electrode composed of a carbon carrying a metal and a binder. 
     
     
         2 . A photoelectric transfer element according to  claim 1  wherein the carbon is needle-like carbon, fullerene, carbon nanotube or electrically conductive carbon black. 
     
     
         3 . A photoelectric transfer element according to  claim 1  wherein the metal is at least one kind of metal selected from the group consisting of Pt, Ru, Co, Ti, Ni, Al and Au. 
     
     
         4 . The electrode according to  claim 1  wherein the specific surface area of the carbon is equal to or larger than 100 m 2 /g. 
     
     
         5 . The electrode according to  claim 1  wherein the specific surface area of the carbon is equal to or larger than 300 m 2 /g. 
     
     
         6 . The electrode according to  claim 1  wherein the amount of the metal carried by the carbon is equal to or more than 5 weight percent of the carbon. 
     
     
         7 . The photoelectric transfer element according to  claim 1  wherein a transparent conductive substrate and said electrode as a counter electrode are opposed to each other, and a semiconductor layer and an electrolyte layer are interposed between the substrate and the electrode. 
     
     
         8 . A photoelectric transfer element according to  claim 1  wherein the electrically conductive substrate is made of glass, a polymer film or a metal. 
     
     
         9 . The photoelectric transfer element according to  claim 1  wherein the element is a dye-sensitized solar cell.