PHOTOVOLTAIC DEVICE WITH SPECTRAL RESPONSE
A photovoltaic device including at least one active layer, a transparent cover plate, a layer that contains luminescent molecules and a layer that contains on at least one side an array of defined and repeating geometrical optical structures, wherein an individual geometrical optical structure of the array comprises a m-polygonal base and an apex area, the m-polygonal base and the apex area are connected by m surfaces with m being equal to 3 or higher.
1 . Photovoltaic device comprising;
at least one active layer,
a transparent cover plate,
a layer comprising luminescent molecules, and
a layer comprising on at least one side an array of defined and repeating geometrical optical structures,
wherein:
an individual geometrical optical structure of the array comprises a m-polygonal base and an apex area,
said m-polygonal base and said apex area are connected by m surfaces with m being equal to 3 or higher,
the apex area is a point or a surface, and
the layer comprising luminescent molecules is positioned between the active layer and an incident light.
2 . Photovoltaic device according to claim 1 , wherein the individual geometrical optical structures of the array are selected from the group consisting of pyramids with a triangular base, pyramids with a rectangular base, and cones.
3 . Photovoltaic device according to claim 1 , wherein the apex area is a surface which is parallel to the m-polygonal base.
4 . Photovoltaic device according to claim 3 , wherein the array comprises a structure in a shape of a cupola or a cylinder with a circular cross section.
5 - 6 . (canceled)
7 . Photovoltaic device according to claim 1 , wherein a surface of the array of defined and repeating geometrical optical structures comprises an additional coating or layer.
8 . Photovoltaic device according to claim 1 , wherein the luminescent molecules comprise a mixture of different luminescent molecules.
9 . Photovoltaic device according to claim 1 , wherein a concentration of luminescent molecules is between 0.001 and 50 gram/m 2 /mm layer thickness.
10 . Photovoltaic device according to claim 1 , wherein the layer comprising the array of defined and repeating geometrical optical structures is made of a polymer or a mixture of more than one polymers.
11 . Photovoltaic device according to claim 1 , wherein the luminescent molecules are organic.
12 . Photovoltaic device according to claim 1 , wherein the luminescent molecules are inorganic.
13 - 15 . (canceled)
16 . Photovoltaic device comprising;
at least one active layer,
a transparent cover plate, and
an array of defined and repeating geometrical optical structures,
wherein:
an individual geometrical optical structure of the array comprises a m-polygonal base and an apex area,
said m-polygonal base and said apex area are connected by m surfaces with m being equal to 3 or higher,
the apex area is a point or a surface, and
the transparent cover plate comprises luminescent molecules.
17 . Photovoltaic device according to claim 17 , wherein the transparent cover plate further comprises on at least one side the array.
18 . Photovoltaic device comprising;
at least one active layer,
a transparent cover plate, and
a layer comprising on at least one side an array of defined and repeating geometrical optical structures,
wherein:
an individual geometrical optical structure of the array comprises a m-polygonal base and an apex area,
said m-polygonal base and said apex area are connected by m surfaces with m being equal to 3 or higher,
the apex area is a point or a surface, and
the layer comprising on at least one side the array comprises luminescent molecules.