| 摘要 |
A compound semiconductor photovoltaic cell includes a compound semiconductor substrate; one or more first photoelectric conversion cells deposited on the compound semiconductor substrate; a bonding layer deposited on the one or more first photoelectric conversion cells; and one or more second photoelectric conversion cells bonded to the one or more first photoelectric conversion cells via the bonding layer, and disposed on a light incident side of the one or more first photoelectric conversion cells in a light incident direction. Further, band gaps of the first and the second photoelectric conversion cells decrease as the first and the second photoelectric conversion cells approach from the light incident side toward a back side in the light incident direction, and when there is one second photoelectric conversion cells, a band gap of the bonding layer is greater than or equal to a band gap of the second photoelectric conversion cell. |
