FERRITE-BASED STAINLESS FOIL FOR SOLAR BATTERY SUBSTRATE USE

摘要

PROBLEM TO BE SOLVED: To provide a ferrite-based stainless foil for solar battery substrate use which can keep a hardness adequate to suppress the buckling in conveying the foil when manufacturing a solar battery by a roll-to-roll method, and which is superior in the easiness of conveying the foil.SOLUTION: A ferrite-based stainless foil for solar battery substrate use comprises 14-18 mass% of Cr, and has a Vickers hardness of Hv250 or larger. The ferrite-based stainless foil has a Vickers hardness of Hv250 or larger even after having gone through a film growth thermal treatment in which the ferrite-based stainless foil is held in a temperature range of 450-600°C for one minute or longer.