A kind of graphene solar cell and preparation method thereof
A solar cell and graphene technology, applied in the field of solar cells, can solve the problems of connection failure, separation, and substrate position difference, and achieve the effect of increasing the number, increasing the transmission efficiency, and reducing the absorption
Active Publication Date: 2018-06-22
白德旭
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Problems solved by technology
However, when an elastic substrate is used as the substrate material of the dye-sensitized solar cell module, a single dye-sensitized solar cell is connected by a metal paste, which is prone to the problem that the substrate position is different when the substrate is bent, and adjacent dye-sensitized solar cells The distance between the electrode layers of solar cells is prone to change
Therefore, it causes separation between the metal paste and the electrode layer, resulting in a problem of connection failure
Method used
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[0056] According to a preferred implementation manner, the first electrode layer 302 may also be a grid electrode layer. The grid electrode layer is an electrode layer formed in a grid using conductive materials. The shape of the grid in the grid electrode layer may be a triangular grid shape, a parallelogram grid shape or a hexagonal grid shape. The thickness of the grid electrode is 0.01 μm˜10 μm. If the thickness is greater than the above range, more material is required and longer time is required to form the grid electrode layer, thereby reducing production efficiency and increasing production cost. If the thickness of the electrode layer is less than the above range, the grid electrode layer may not be able to sufficiently perform its function. The porosity of the grid electrode is 50%-99%. If the porosity of the grid electrode layer is lower than the above range, the solar cell of this embodiment cannot sufficiently receive sunlight through the first electrode layer,...
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Abstract
The invention relates to a graphene solar cell. A photo-anode of the graphene solar cell comprises a first electrode layer (302), a nanometer crystal coating and a dye layer (301) on the surface of the nanometer crystal coating. The graphene solar cell is characterized in that the nanometer crystal coating is a composite thin film composed of a semiconductor nanometer wire core (101) wrapped by a graphene layer (102), the nanometer wire core (101) is horizontally arranged on the surface of the first electrode layer (302) where a texture (002) is preset, and a deposit mask (500) is deposited on the outer layer of the nanometer wire core (101) to form the graphene layer (102). Graphene in the graphene solar cell is arranged on the electrode layer in the direction parallel to the sunlight incidence direction, and therefore the absorption of the graphene layer on sunlight is reduced, the number and the conduction efficiency of activated electrons in dye sensitizer are increased, and the light efficiency of the solar cell is improved.
Description
technical field [0001] The invention relates to the technical field of solar cells, in particular to a graphene solar cell and a preparation method thereof. Background technique [0002] 1991 Ecole Polytechnique de Lausanne, Switzerland The professor reported the research work of dye-sensitized solar cells for the first time. This kind of battery has the advantages of low cost, high efficiency, low manufacturing process requirements and long life. Research hotspots. [0003] A dye-sensitized solar cell consists of a photoanode, an electrolyte and a cathode, wherein the photoanode is composed of a semiconductor nanocrystal film formed on the electrode layer and a photosensitive dye adsorbed on its surface. The working principle of the dye-sensitized solar cell is: when the dye molecule absorbs sunlight, its electrons jump to the excited state, because the excited state is unstable, the dye molecule interacts with the semiconductor, and the electrons are quickly transferred...
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IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542
Inventor 白德旭
Owner 白德旭