| 摘要 |
PROBLEM TO BE SOLVED: To form an oxide layer which is effective as an insulating layer for a solar cell board on the surface of a stainless steel plate through a sol-gel method. SOLUTION: An insulating layer 2 which is as thick as 1 to 10 μm is formed on the surface of a stainless steel plate 1 as a base which serves as a solar cell board. Inorganic compound whose reflectivity is 70% o above to visible light may be dispersed into the insulating layer 2. When a stainless steel plate, whose surface is finely rugged or corrugated to promote the scattered multiple reflection of an incident light, is used as the stainless steel plate board, a solar cell is improved in photoelectric conversion efficiency, when the above stainless steel plate is used. The stainless steel plate 1 is brought into contact with a solution of organic solvent, where metal alkoxide such as alkoxysilane or the like, organoalkoxysilane, water, and thickening agent are dissolved. The solution attached to the surface of the stainless steel plate is dried up and then baked, whereby an insulating layer is formed on the surface of the stainless steel plate 1. |
