| 摘要 |
The present invention provides an apparatus or a method for forming a thin zinc oxide film on a conductive base member by immersing the conductive base member and a counter electrode in an aqueous solution and supplying a current between the conductive base member and the counter electrode, in which (a) a distance between the counter electrode and the base member is 50 mm or more at an end portion of the counter electrode and is 3 mm to 40 mm at a central portion of the counter electrode, and (b) an end portion of the counter electrode is folded by an angle of -1 DEG to -90 DEG with respect to the conductive base member. Thus the thin zinc oxide film of satisfactory film quality can be formed on the conductive base member for a long time with a satisfactory yield, and inexpensive and stable production of the thin zinc oxide film can be realized. <IMAGE> |
