| 摘要 |
A photovoltaic device has a first photovoltaic cell unit and a second photovoltaic cell unit stacked on either side of a conductive intermediate layer, between a first electrode and a second electrode, the first electrode and second electrode being electrically connected by a channel formed through the first photovoltaic cell unit, the second photovoltaic cell unit, and the intermediate layer as far as the surface of the first electrode, and a PN junction being formed at an end section of the intermediate layer that contacts the second electrode by adding dopant.
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