FIELD: physics.
SUBSTANCE: photoelectric conversion element for making a light path to said photoelectric conversion portion includes a middle portion and a peripheral portion having a refraction index different from that of the middle portion, within a certain plane parallel to the light-receiving surface of the photoelectric conversion portion, and within another plane lying closer to the light-receiving surface than said certain plane, and parallel to the light-receiving surface, wherein the peripheral portion is continuous with the middle portion and surrounds the middle portion; the refraction index of the peripheral portion is greater than that of the insulating film and the thickness of the peripheral portion within said other plane is smaller than that of the peripheral portion within said certain plane.
EFFECT: high sensitivity of photoelectric conversion elements with high efficiency of using incident light.
28 cl, 11 dwg
