| 摘要 |
This disclosure provides photovoltaic apparatus and methods of forming the same. In one implementation, a photovoltaic device includes a transparent insulator (18), a first thin film solar subcell (20) disposed on a first surface of the transparent insulator, and a second thin film solar subcell (22) disposed on a second surface of the transparent insulator opposite the first surface. The first solar subcell is configured to receive ambient light, and the second solar subcell is configured to receive a portion of light that propagates through the first solar subcell. The second solar subcell includes a first electrode (39) including a conductive reflective layer configured to reflect light that propagates through a photovoltaic structure of the second subcell back toward the first solar subcell. |
