There is provided a photoelectric conversion device comprising a lower electrode, numerous crystalline semiconductor particles of one conductivity type deposited on the lower electrode, an insulator interposed among the crystalline semiconductor particles, and a semiconductor layer of the opposite conductivity type provided over the crystalline semiconductor particles, in which a pyramidal projection having a cross section in the shape of a trapezoid or triangle and a lateral face that faces one of the crystalline semiconductor particles is provided between the crystalline semiconductor particles. In this device, light incident on areas among the crystalline semiconductor particles is reflected or refracted by the pyramidal projection and directed into the crystalline semiconductor particles. Accordingly, this device can achieve high conversion efficiency.