Patent ID: 11101303

Abstract:
An imaging element (photoelectric conversion element) includes a photoelectric conversion unit formed by laminating a first electrode 21, a photoelectric conversion layer 23A, and a second electrode 22. Between the first electrode 21 and the photoelectric conversion layer 23A, a composite oxide layer 23B containing indium-gallium-zinc composite oxide is formed. The composite oxide layer 23B includes a first layer 23B1 adjacent to the first electrode 21 and a second layer 23B2 adjacent to the photoelectric conversion layer 23A. The first layer 23B1 has a higher indium composition than the second layer 23B2, or the first layer 23B1 has a higher gallium composition than the second layer 23B2, or the first layer 23B1 has a higher zinc composition than the second layer 23B2.