| 摘要 |
A photovoltaic module is a glass-glass thin film solar cell. It comprises a transparent glass substrate arranged on the front side of the module, i.e., in the direction of the light source. A layer system is deposited on the substrate which comprises a front electrode layer, e.g., a TCO layer, an active semiconductor layer and a second electrode layer, which may also be a TCO (transparent conductive oxide) layer. The active semiconductor layer comprises semiconducting areas of different conductivity type and a junction between these areas. The junction may be a p-n or a p-i-n junction between a p-doped area and an n-doped area. The layer system is sandwiched between the glass substrate and a glass encapsulation element. The glass encapsulation element is bonded to the substrate and the layer system, respectively, by means of a bonding layer. According to the invention the bonding layer is configured as a white lambertian back reflector. It may consist of a PVB (poly vinyl butyral) or a silicon material layer and an appropriate dye or pigment, e.g., titanium-dioxide, embedded in the PVB of silicon material layer.
|
