Solar cell

摘要

Solar cell has a flexible substrate (11) with a photoelectric conversion layer (14) deposited on it, which is formed by a laminate layer of non-single crystalline silicon thin films. The substrate has a linear thermal expansion coefficient of 2.0 ppm/ deg C to 10.0 ppm/ deg C, and is made of an alloy of iron and nickel, the nickel content being 30-51 wt.%. Production of the solar cell is also claimed, in which the nickel content of the alloy corresponding to the voltage state is controlled to act on the photoelectric conversion layer.