| 摘要 |
The present invention provides a photovoltaic device having an active face, an active area on the active face and an operating wavelength range; and a cover element attached to the photovoltaic device and disposed over the active area of the active face of the photovoltaic element, the cover element having an opacity of at least about 25%. The present invention also provides photovoltaic systems, arrays, roofs and methods using such photovoltaic devices. In one embodiment of the invention, the photovoltaic device is a photovoltaic roofing element in which a photovoltaic element is integrated with a roofing substrate. |
