THIN-FILM SOLAR CELL, AND METHOD OF MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a thin-film solar cell capable of effective utilization of light and excelling in photoelectric conversion efficiency, and to provide a method of manufacturing the same. SOLUTION: This thin-film solar cell includes, on a translucent substrate 1, a first electrode layer 2 formed of a transparent conductive film, a first photoelectric conversion layer 3 for performing photoelectric conversion, an intermediate layer 4, a second photoelectric conversion layer 5 for performing photoelectric conversion, a second electrode layer 7 in this order. In the thin-film solar cell, a first texture structure 2a having a plurality of irregularities is formed on a light incident side of the first photoelectric conversion layer 3; a second texture structure 4a having a plurality of irregularities is formed on the light incident side of the second photoelectric conversion layer 5 and between the first photoelectric conversion layer 3 and the second photoelectric conversion layer 5; the formation interval P1 of the irregularities in the first texture structure 2a is shorter than the wavelength of light used for photoelectric conversion in the second photoelectric conversion layer 5; and the formation interval P2 of the irregularities in the second texture structure 4a is longer than the formation interval P1 of the irregularities in the first texture structure 2a. COPYRIGHT: (C)2011,JPO&INPIT