| 摘要 |
PROBLEM TO BE SOLVED: To provide a solar battery of tandem type in which both high efficiency and low cost are realized.SOLUTION: A solar battery includes a first solar battery cell which contains a Si layer as a light absorbing layer, and a second solar battery cell which contains group I-III-VIcompound layer or group I-II-IV-VIcompound layer as a light absorbing layer, laminated each other. Between the first and second solar battery cells, there are provided an n+ type Si layer and an intermediate layer which is at least one kind selected from among p+ type Si layer, metal compound layer, and graphene layer (where, metal compound layer is represented by MX, M is an element of at least one kind selected from among Nb, Mo, Pd, Ta, W and Pt, and X is an element of at least one kind selected from among S, Se, and Te). |
