HIGH EFFICIENCY INTERFEROMETRIC COLOR FILTERS FOR PHOTOVOLTAIC MODULES
First Claim
1. A color filtering device comprising:
- a first partial reflector layer comprising a material having an extinction coefficient that is less than about one (1) at wavelengths greater than about 800 nm;
a second partial reflector layer comprising a material having an extinction coefficient that is less than about one (1) at wavelengths greater than about 800 nm; and
a first optical resonant cavity defined by the first partial reflector layer and the second partial reflector layer.
2 Assignments
0 Petitions
Accused Products
Abstract
Devices incorporating an interferometric stack configured to reflect a certain color and transmit longer wavelengths through the interferometric stack. In one example, a color filtering includes two partial reflectors comprising an extinction coefficient that is less than about one at wavelengths greater than about 800 nm. The two partial reflectors define an optical resonant cavity forming an interferometric stack configured to reflect color and transmit some electromagnetic waves. In another example, a photovoltaic device includes two photovoltaic active layers that act as partial reflectors to form an interferometric stack. The photovoltaic device is configured to reflect color and produce power.
170 Citations
51 Claims
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1. A color filtering device comprising:
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a first partial reflector layer comprising a material having an extinction coefficient that is less than about one (1) at wavelengths greater than about 800 nm; a second partial reflector layer comprising a material having an extinction coefficient that is less than about one (1) at wavelengths greater than about 800 nm; and a first optical resonant cavity defined by the first partial reflector layer and the second partial reflector layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A color filtering device comprising:
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a first means for partially reflecting light, the first partially reflecting means having an extinction coefficient that is less than about one (1) at wavelengths greater than about 800 nm; a second means for partially reflecting light, the second partially reflecting means having an extinction coefficient that is less than about one (1) at wavelengths greater than about 800 nm; and a first optical resonant cavity defined by the first partially reflecting means and the second partially reflecting means. - View Dependent Claims (18, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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19. A photovoltaic device comprising:
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a first partially reflective means, the first partially reflective means having an extinction coefficient that is less than about 1 at wavelengths greater than 800 nm; a second partially reflective means, the second partially reflective means comprising a photovoltaic active material; and a first optical resonant cavity defined by the first partial reflector layer and the second partial reflector layer. - View Dependent Claims (20)
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21. A photovoltaic device comprising:
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a first partial reflector layer comprising a material having an extinction coefficient that is less than about 1 at wavelengths greater than 800 nm; a second partial reflector layer comprising a photovoltaic active material; and a first optical resonant cavity defined by the first partial reflector layer and the second partial reflector layer.
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31. A photovoltaic device comprising:
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a first partial reflector layer comprising a photovoltaic active material having an extinction coefficient that is less than about 1 at wavelengths greater than 800 nm; a second partial reflector layer comprising a photovoltaic active material; and a first optical resonant cavity defined by the first partial reflector layer and the second partial reflector layer. - View Dependent Claims (32, 33, 34, 35, 36, 37, 39, 40, 41, 43, 44, 45, 50)
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38. A photovoltaic device comprising:
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a first photovoltaic active material layer; a second photovoltaic active material layer; an optical resonant cavity disposed between the first photovoltaic active material layer and the second photovoltaic active material layer; a first transparent conductive material layer disposed such that the first photovoltaic active material layer is between the first transparent conductive material layer and the optical resonant cavity; and a second transparent conductive material layer disposed such that the second photovoltaic active material layer is between the second transparent conductive material layer and the optical resonant cavity.
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42. A method of manufacturing a photovoltaic device, the method comprising:
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depositing a first transparent conductive material layer on a substrate; depositing a first photovoltaic active layer on the first transparent conductive material layer; depositing a second transparent conductive material layer on the first photovoltaic active layer; depositing a second photovoltaic active layer on the second transparent conductive material layer; and depositing a third transparent conductive material layer on the second photovoltaic active layer.
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46. A photovoltaic device comprising:
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a first partial reflector layer comprising a photovoltaic active material having an extinction coefficient that is less than about 1 at wavelengths greater than 800 nm; a second partial reflector layer comprising a photovoltaic active material; a first optical resonant cavity defined by the first partial reflector layer and the second partial reflector layer; a reflector layer; a second optical resonant cavity comprising a transparent conductive material, the second optical resonant cavity defined by the second partial reflector layer and the reflector layer; and a transparent conductive material layer disposed such that the first partial reflector layer is between the transparent conductive material layer and the first optical resonant cavity.
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47. A photovoltaic device comprising:
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a color filter comprising a first partial reflector and a transparent conductive material layer disposed on the first partial reflector; and a photovoltaic active material layer disposed on the transparent conductive material layer.
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48. A method of manufacturing a photovoltaic device, the method comprising:
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providing a starter stack having a front side and a back side, the starter stack comprising a first partial reflector; and depositing a photovoltaic active layer on the back side of the starter stack. - View Dependent Claims (49, 51)
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Specification