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Solar battery with graphite interface layer and manufacturing method thereof

A technology of solar cells and graphene, applied in the field of sensitized solar cells and its preparation, can solve the problems of sensitized solar cells to reduce photoelectric performance

Inactive Publication Date: 2011-08-03
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the back reaction process of sensitized solar cells reduces its photoelectric performance in the prior art, and to provide a sensitized solar cell with higher photoelectric conversion efficiency and its preparation method

Method used

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  • Solar battery with graphite interface layer and manufacturing method thereof
  • Solar battery with graphite interface layer and manufacturing method thereof
  • Solar battery with graphite interface layer and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Ultrasonic disperse 5mg of graphite oxide in 100ml of ethanol to form a suspension of 0.05mg / ml

[0039] (2) Spray the suspension of graphite oxide onto the indium tin oxide conductive glass under air carrier gas, the carrier gas flow rate is 100 sccm; the spraying time is 1min; the temperature of the conductive glass is 60°C

[0040](3) The graphite oxide sprayed on the conductive glass is heat-treated at 250° C. for 30 minutes in a hydrogen atmosphere to reduce it to graphene, that is, the graphene interface layer. Tested by atomic force microscope (MFP-3D-SA type of Asylum Research Company of the United States), the thickness of the graphene interface layer is 1.2nm

[0041] (4) Put 1 g of titanium dioxide nanocrystalline powder, 0.5 g of polyethylene glycol, and 30 ml of deionized water into a mortar, and grind for 30 minutes to obtain a titanium dioxide nanocrystalline slurry. Coating the slurry on conductive glass with a graphene interface layer, drying at ro...

Embodiment 2

[0046] (1) Ultrasonic disperse 50mg of graphite oxide in 100ml of ethanol to form a 0.5mg / ml suspension

[0047] (2) Spray the suspension of graphite oxide onto the indium tin oxide conductive glass under air carrier gas, the carrier gas flow rate is 500 sccm; the spraying time is 2min; the substrate temperature is 70°C

[0048] (3) Graphite oxide sprayed on the conductive glass is heat-treated at 300° C. for 60 minutes in a carbon monoxide atmosphere to reduce it to graphene, that is, the graphene interface layer. Tested by atomic force microscope (MFP-3D-SA type of Asylum Research Company of the United States), the thickness of the graphene interface layer is 2.5nm

[0049] (4) Put 1 g of titanium dioxide nanocrystalline powder, 0.5 g of polyethylene glycol, and 30 ml of deionized water into a mortar, and grind for 30 minutes to obtain a titanium dioxide nanocrystalline slurry. Coating the slurry on conductive glass with a graphene interface layer, drying at room temperatur...

Embodiment 3

[0054] (1) Ultrasonic disperse 5mg of graphite oxide in 100ml of acetone to form a 0.05mg / ml suspension

[0055] (2) Spray the suspension of graphite oxide onto the indium tin oxide conductive glass under air carrier gas, the carrier gas flow rate is 1000 sccm; the spraying time is 3min; the substrate temperature is 90°C

[0056] (3) The graphite oxide sprayed on the conductive glass is heat-treated at 250° C. for 30 minutes in a helium atmosphere, and then reduced to a graphene film, that is, the graphene interface layer. Tested by atomic force microscope (MFP-3D-SA type of Asylum Research Company of the United States), the thickness of the graphene interface layer is 1.5nm

[0057] (4) Put 1 g of titanium dioxide nanocrystalline powder, 0.5 g of polyethylene glycol, and 30 ml of deionized water into a mortar, and grind for 30 minutes to obtain a titanium dioxide nanocrystalline slurry. Coating the slurry on conductive glass with a graphene interface layer, drying at room te...

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Abstract

The invention discloses a solar battery with a graphite interface layer and a manufacturing method thereof. The solar battery comprises conducting glass, a thin oxide film, an electrolyte and a pair of electrodes, wherein the graphite interface layer is arranged between the conducting glass and the thin oxide film. A graphite oxide suspension is sprayed to the conducting glass, and the graphite oxide sprayed to the conducting glass is reduced to graphite at high temperature in a reducing or inert atmosphere. By using high conductivity and an appropriate energy band structure of graphite, the graphite interface layer is introduced between the conducting glass and the thin oxide film, so that the electrolyte can be effectively prevented from touching the conducting glass, the compounding possibility between photogenerated electrons and the electrolyte is reduced, the back reaction process is inhibited, and the photoelectric properties of the battery are improved.

Description

technical field [0001] The invention relates to a solar cell and a preparation method thereof, in particular to a sensitized solar cell and a preparation method thereof in which a graphene interface layer is introduced between a conductive glass and an oxide film to suppress a back reaction process. technical background [0002] Energy depletion is one of the three major challenges facing human society in the 21st century. Therefore, the development of renewable new energy sources is a major issue that human beings need to solve urgently in this century. Among various renewable energy sources, solar energy is most likely to replace fossil fuels and become the main form of energy in the future due to its advantages of "inexhaustible, inexhaustible", environment-friendly, and wide applicability. At present, the main method for people to utilize solar energy is to manufacture solar cells to convert solar energy into electrical energy for utilization. Among various types of sol...

Claims

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Application Information

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IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/42H01L51/48
CPCY02E10/50Y02E10/549
Inventor 王立群李德军刘思鹏王琳
Owner TIANJIN NORMAL UNIVERSITY
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