| 摘要 |
The present invention provides photovoltaic cells that stably increase photovoltaic conversion efficiency while restraining current leakage. The photovoltaic cells of the present invention include a transparent conductive layer formed on a light-permeable substrate, an organic semiconductor layer A covering the surface of the transparent conductive layer, a photovoltaic conversion layer in contact with the organic semiconductor layer, an organic semiconductor layer B in contact with the photovoltaic conversion layer, and a counter electrode in contact with the organic semiconductor layer B. In the photovoltaic cells, a patterned indented interlayer is formed at the interface between the organic semiconductor layer A and the photovoltaic conversion layer. With the patterned indented interlayer at the interface between the organic semiconductor layer A and the photovoltaic conversion layer, the interface between the organic semiconductor layer A and the photovoltaic conversion layer has a specific surface area 1.5 to 10 times as large as the interface between the transparent conductive layer and the organic semiconductor layer A.
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