Electronic device including graphene-based layer(s), and/or method or making the same
First Claim
1. A solar cell, comprising:
- a glass substrate;
a first graphene-based conductive layer located, directly or indirectly, on the glass substrate;
a first semiconductor layer in contact with the first graphene-based conductive layer;
at least one absorbing layer located, directly or indirectly, on the first semiconductor layer;
a second semiconductor layer located, directly or indirectly, on the at least one absorbing layer;
a second graphene-based conductive layer in contact with the second semiconductor layer; and
a back contact located, directly or indirectly, on the second-graphene-based conductive layer.
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Accused Products
Abstract
Certain example embodiments of this invention relate to the use of graphene as a transparent conductive coating (TCC). In certain example embodiments, graphene thin films grown on large areas hetero-epitaxially, e.g., on a catalyst thin film, from a hydrocarbon gas (such as, for example, C2H2, CH4, or the like). The graphene thin films of certain example embodiments may be doped or undoped. In certain example embodiments, graphene thin films, once formed, may be lifted off of their carrier substrates and transferred to receiving substrates, e.g., for inclusion in an intermediate or final product. Graphene grown, lifted, and transferred in this way may exhibit low sheet resistances (e.g., less than 150 ohms/square and lower when doped) and high transmission values (e.g., at least in the visible and infrared spectra).
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Citations
30 Claims
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1. A solar cell, comprising:
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a glass substrate; a first graphene-based conductive layer located, directly or indirectly, on the glass substrate; a first semiconductor layer in contact with the first graphene-based conductive layer; at least one absorbing layer located, directly or indirectly, on the first semiconductor layer; a second semiconductor layer located, directly or indirectly, on the at least one absorbing layer; a second graphene-based conductive layer in contact with the second semiconductor layer; and a back contact located, directly or indirectly, on the second-graphene-based conductive layer. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A photovoltaic device, comprising:
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a substrate; at least one photovoltaic thin-film layer; first and second electrodes; and first and second transparent, conductive graphene-based layers; wherein the first and second graphene-based layers are respectively doped with n- and p-type dopants.
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8. A touch panel subassembly, comprising:
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a glass substrate; a first transparent, conductive graphene-based layer provided, directly or indirectly, on the glass substrate; a deformable foil, the deformable foil being substantially parallel and in spaced apart relation to the glass substrate; and a second transparent, conductive graphene-based layer provided, directly or indirectly, on the deformable foil. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A data/bus line, comprising a graphene-based layer supported by a substrate, wherein:
a portion of the graphene-based layer has been exposed to an ion beam/plasma treatment and/or etched with H*, thereby reducing conductivity of the portion. - View Dependent Claims (19, 20, 21, 22)
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23. An antenna, comprising:
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a graphene-based layer supported by a substrate, wherein; a portion of the graphene-based layer has been exposed to an ion beam/plasma treatment and/or etched with H* to thin the portion of graphene-based layer in comparison to other portions of the graphene-based layer, wherein the graphene-based layer, as a whole, has a visible transmission of at least 80%. - View Dependent Claims (24)
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25. A method of making an electronic device, the method comprising:
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providing a substrate; forming a graphene-based layer on the substrate; and selectively patterning the graphene-based layer by one of;
ion beam/plasma exposure and etching with H*. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification