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Graphene dye sensitized solar cell and production method thereof

A technology of solar cells and dye sensitization, which is applied in the field of graphene dye-sensitized solar cells and its production, to achieve the effects of expanding the application range, simplifying the production process, and reducing costs

Inactive Publication Date: 2011-08-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The solution of the present invention is aimed at the disadvantages existing in the current technology, and adopts graphene, which is easy to obtain, low in cost, has good electrical conductivity, high flexibility, and good ductility, as the conductive layer to overcome the influence of electrical conductivity by deformation. It is too large and cannot be applied to the flexible field; at the same time, a layer of platinum particles is embedded on the graphene conductive layer of the counter electrode by adsorption, so as to use the photocatalytic activity of graphene and the platinum particles embedded on it to form a composite catalytic layer. On the premise of ensuring the performance of dye-sensitized solar cells, effectively reduce its cost and simplify the production process

Method used

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  • Graphene dye sensitized solar cell and production method thereof
  • Graphene dye sensitized solar cell and production method thereof

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Experimental program
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Embodiment 1

[0019] Embodiment 1: Take solar cells using transparent glass as the upper and lower substrates 1-1, 1-2 as an example:

[0020] Step A. Preparation of photoanode:

[0021] A 1 . Lay the graphene conductive layer on the surface of the transparent glass substrate: firstly, the transparent glass with a thickness of 2 mm and an area of ​​2 × 2 cm as the substrate 1-1 is cleaned with deionized water and ethanol in sequence, and dried in vacuum before use The present embodiment adopts the graphene thin film gained by conventional chemical vapor deposition method as conductive layer, namely on the surface of the graphene thin film with the method for conventional chemical vapor deposition on the copper foil, after the organic colloid is spin-coated on the upper surface of the graphene thin film , dried at 100°C for 10 minutes; then the obtained copper foil with graphene film and organic adhesive layer was fed into FeCl with a concentration of 1mol / L 3 solution, etch off the copper...

Embodiment 2

[0028] Embodiment 2: Take PET (polyethylene terephthalate) in the transparent polyester plastic as the solar cell of upper and lower substrate 1-1, 1-2 as example:

[0029] Step A. Preparation of photoanode:

[0030] A 1 . Lay the graphene conductive layer on the surface of the PET substrate: first, the PET with a thickness of 0.2 mm and an area of ​​2 × 2 cm as the substrate 1-1 is cleaned with deionized water and ethanol in sequence, and vacuum-dried before use; 5 mg of graphene prepared by chemical method is ultrasonically dispersed in 10 ml of absolute ethanol to form graphene absolute ethanol solution, PET (transmittance 90%, thickness 0.2 mm) upper substrate 1-1 is placed on a rotary glue coater, This solution was added dropwise on the substrate 1-1. Rotate at a speed of 1000r / min for 30s to obtain a layer of graphene film, then dry at 80°C for 5min, and repeat rotation-drying to obtain a graphene conductive layer 2-1 with a thickness of about 1 μm;

[0031] A 2 . La...

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Abstract

The invention discloses a graphene dye sensitized solar cell and a production method thereof. The solar cell comprises a light anode comprising transparent upper base material and graphene conducting layer, a porous nano semiconductor film and a dye sensitizer, oxidation reduction electrolyte solution, a counter electrode comprising a lower base and graphene conducting layer and a composite catalytic layer as well as a film shell. The production method comprises the steps of preparing the light anode, preparing the counter electrode, encapsulating and injecting the electrolyte solution. In the invention, graphene with an available raw material, low cost, good conductive performance, extremely high flexibility and good ductibility is adopted as the conducting layer, the flexible transparent material is adopted as a substrate, and platinum metal particles are embedded on the graphene conducting layer of the counter electrode by adopting adsorption instead of magnetron sputtering to form the composite catalytic layer. Thus, the invention has the characteristics that the raw material is available, the production cost is low, the production process is simple and reliable, the flexible solar cell can be produced and applied to the flexible field, and the application range is effectively expanded.

Description

technical field [0001] The invention belongs to the field of graphene solar cell production, in particular to a graphene dye-sensitized solar cell and a production method thereof. Background technique [0002] Dye-sensitized solar cells have relatively high theoretical conversion efficiencies. The dye-sensitized solar cell is mainly composed of the upper substrate material (transparent glass, plastic) and the conductive layer coated on it, the photoanode composed of porous nanocrystalline film and dye sensitizer, the electrolyte solution and the lower substrate material and its conductive layer. and a counter electrode composed of a platinum catalytic layer coated on the conductive layer by magnetron sputtering. Among them, the conductive layer in the photoanode and the counter electrode is mainly indium tin oxide (ITO) or fluorine-doped tin oxide (FTO); this type of conductive layer has a high cost (especially indium tin oxide); the second is flexibility Small (performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20H01M14/00H01L51/42H01L51/44H01L51/48
CPCY02E10/50Y02E10/542Y02E10/549Y02P70/50
Inventor 陈远富程凯王泽高李萍剑张万里李言荣
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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