Layered perovskite, light absorbing layer, substrate with light absorbing layer, photoelectric conversion element and solar cell

摘要

The present invention relates to a layered perovskite having a large band gap energy and excellent carrier transport ability, an optical absorption layer including said perovskite, a substrate having an optical absorption layer having the light absorbing layer, and a photoelectric conversion element A solar cell having the photoelectric conversion element is provided.The layered perovskite of the present invention has a surface spacing of (002) planes calculated from the X-ray diffraction peak obtained by the out of plane method at 2.6 nm to 5.0 NM The intensity ratio ((111) plane / (002) plane) of the X-ray diffraction peak intensity of the (111) plane relative to the X-ray diffraction peak intensity of the (002) plane at the X-ray diffraction peak is 0.03 or more.