| 摘要 |
PURPOSE:Not to cause a decrease in a fill factor in large conditions of power generation electromagnetic waves like under sun light by forming a printed electrode through printing and firing of conductive paste with phenol resin as a binder. CONSTITUTION:The values of a solar cell having an Al rear side electrode for comparing open voltage Voc, short circuit current density J3c, fill factor FF, conversion efficiency eta and series resistance R3 of a solar cell having an area of 1cm<2> in which, with phenol resin as a binder, paste produced by mixing powders of Ni, Ni+Ag, Ag, Mo, W, and C having a maximum grain size of 30mum four times the weight of resin is applied as a conductive material, it is fired for about 30min. at 150 to 170 deg.C, and it is made a printed rear side electrode are, shown at the same time. One in which Mo powder is used as a conductive material has FF and eta higher than one in which Ni or other materials are used as conductive materials. R3 is smaller by a factor of about 10 or more and it shows performance of about the same as one in which deposited Al is used as a rear side electrode. If one in which a silan coupling agent which is an interface activator is mixed with paste composed of Mo powder and phenol resin, characteristics are further improved. |
