Nanostructured solar cells

Details Nanostructured solar cells Nanostructured solar cells

H - Electricity

01

L

H01L 31/0256 (2006.01) H01L 31/06 (2006.01)

Patent

CA 2723829

Improved photovoltaic devices and methods are disclosed. In one embodiment, an exemplary photovoltaic device includes a semiconductor layer and a light-responsive layer (which can be made, for example, of a semiconductor material) which form a junction, such as a p-n junction. The light-responsive layer can include a plurality of carbon nanostructures, such as carbon nanotubes, located therein. In many cases, the carbon nanostructures can provide a conductive pathway within the light-responsive layer. In other embodiments, exemplary photovoltaic devices include semiconductor nanostructures, which can take a variety of forms, in addition to the carbon nanostructures. Further embodiments include a wide variety of other configurations and features. Methods of fabricating photovoltaic devices are also disclosed.

L'invention concerne des dispositifs et des procédés photovoltaïques. Dans un mode de réalisation, un dispositif photovoltaïque pris en exemple comprend : une couche semi-conductrice et une couche photosensible (qui peut être constituée, par exemple, d'un matériau semi-conducteur) qui forment une jonction, telle qu'une jonction p-n. La couche photosensible peut comprendre plusieurs nanostructures de carbone, telles que des nanotubes de carbone. Dans de nombreux cas, les nanostructures de carbone fournissent un chemin conducteur à l'intérieur de la couche photosensible. Dans d'autres modes de réalisation, les dispositifs photovoltaïques pris en exemple comprennent des nanostructures de carbone, qui peuvent prendre des formes variées, s'ajoutant aux nanostructures de carbone. D'autres modes de réalisation permettent une grande variété de configurations et de caractéristiques. L'invention concerne également des procédés de fabrication de dispositifs photovoltaïques.

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