PHOTOELECTRIC CONVERSION ELEMENT, SOLAR CELL, AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a photoelectric conversion element with a high conversion efficiency and a solar cell.SOLUTION: The photoelectric conversion element includes: a lower part electrode; and a semiconductor thin film having a chalcopyrite structure containing Ib element, IIIb element, and VIb element on the lower part electrode as a light absorption layer. An average crystal grain diameter of the light absorption layer is greater than or equal to 1.5 μm. The IIIB element is composed of either one of or both of Ga and Al.SELECTED DRAWING: Figure 1