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A kind of in-situ synthesis zno nano sheet photoanode film and preparation method thereof

An in-situ synthesis and nanosheet technology, applied in the field of solar cells, can solve the problems of low dye adsorption, small specific surface area, and limitation of ZnO nanorod DSSC photoelectric conversion rate, etc., to increase specific surface area, low reaction temperature, increase dye The effect of the amount of adsorption

Inactive Publication Date: 2018-10-09
JINGDEZHEN CERAMIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the small specific surface area of ​​ZnO nanorod photoanodes and the low amount of adsorbed dye limit the photoelectric conversion efficiency of ZnO nanorod DSSCs.

Method used

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  • A kind of in-situ synthesis zno nano sheet photoanode film and preparation method thereof
  • A kind of in-situ synthesis zno nano sheet photoanode film and preparation method thereof
  • A kind of in-situ synthesis zno nano sheet photoanode film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation steps of a ZnO nanosheet dye-sensitized solar cell photoanode film in this embodiment are as follows:

[0026] (1) Preparation of growth solution

[0027] Use a graduated cylinder to measure 140ml of deionized water and pour it into a beaker, add 8.32g of zinc nitrate hexahydrate and 3.92g of hexamethylenetetramine to the beaker in turn under magnetic stirring, stir at 25°C, and stir the solution evenly Obtain growth liquid; The concentration of zinc nitrate hexahydrate and hexamethylenetetramine in the aqueous solution is 0.2M;

[0028] (2) Preparation of multi-level ZnO nanosheet films

[0029] Put the cleaned conductive glass with the conductive surface down and put it into a hydrothermal reaction kettle with a volume of 200ml, then pour 140ml of growth liquid into the hydrothermal reaction kettle, the volume filling rate of the hydrothermal reaction kettle is 70%, and then pour the water The thermal reaction kettle was put into an oven heated to 90...

Embodiment 2

[0031] The preparation steps of a ZnO nanosheet dye-sensitized solar cell photoanode film in this embodiment are as follows:

[0032] (1) Preparation of growth solution

[0033] Use a graduated cylinder to measure 140ml of deionized water and pour it into a beaker, add 8.32g of zinc nitrate hexahydrate and 3.92g of hexamethylenetetramine to the beaker in turn under magnetic stirring, stir at 25°C, and stir the solution evenly Obtain growth liquid; The concentration of zinc nitrate hexahydrate and hexamethylenetetramine in the aqueous solution is 0.2M;

[0034] (2) Preparation of multi-level ZnO nanosheet films

[0035] Put the cleaned conductive glass with the conductive surface down and put it into a hydrothermal reaction kettle with a volume of 200ml, then pour 140ml of growth liquid into the hydrothermal reaction kettle, the volume filling rate of the hydrothermal reaction kettle is 70%, and then pour the water The thermal reaction kettle was put into an oven heated to 90...

Embodiment 3

[0037] The preparation steps of a ZnO nanosheet dye-sensitized solar cell photoanode film in this embodiment are as follows:

[0038] (1) Preparation of growth solution

[0039] Use a graduated cylinder to measure 140ml of deionized water and pour it into a beaker, add 8.32g of zinc nitrate hexahydrate and 3.92g of hexamethylenetetramine to the beaker in turn under magnetic stirring, stir at 25°C, and stir the solution evenly The growth solution is obtained; the concentrations of zinc nitrate hexahydrate and hexamethylenetetramine in the aqueous solution are both 0.2M;

[0040] (2) Preparation of multi-level ZnO nanosheet films

[0041]Put the cleaned conductive glass with the conductive surface down and put it into a hydrothermal reaction kettle with a volume of 200ml, then pour 140ml of growth liquid into the hydrothermal reaction kettle, the volume filling rate of the hydrothermal reaction kettle is 70%, and then pour the water The thermal reaction kettle was put into an ...

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Abstract

The invention discloses an in-situ synthesized ZnO nanometer sheet photoanode film and a preparation method. The preparation method disclosed by the invention comprises steps of adopting a high concentration zinc nitrate hexahydrate solution and a hexamethylenetetramine water solution, prolonging reaction time of hydro-thermal synthesis and adopting the hydro-thermal synthesis method to prepare a ZnO nanometer sheet dye sensitization solar energy battery photoanode film having a multi-stage structure through in-situ synthesis. The ZnO nanometer sheet prepared by the invention is characterized in that: the prepared two dimension ZnO nanometer shortens the transmission path of the photoproduction electron; the prepared ZnO nanometer sheet film has the micro holes which benefit the diffusion of the electrolyte in the nanometer sheet film; and the prepared ZnO nanometer sheet film has numerous mesoporous which increases the specific surface area of the ZnO nanometer sheet film and benefits the increase of the absorbing capacity of dye so as to increase the short circuit current of a battery. The dye sensitization solar energy battery prepared by the photoanode film prepared by the invention has high photoelectric conversion efficiency. Besides, the in-situ synthesized ZnO nanometer sheet photoanode film disclosed by the invention also has advantages of low reaction temperature, simple technology, simple device and low cost.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to an in-situ synthesized ZnO nanosheet photoanode film and a preparation method thereof. Background technique [0002] At present, the most widely researched and applied solar cells are mainly silicon-based solar cells, but their wide application is limited due to problems such as high cost, complex process, high energy consumption, and environmental pollution during production. year 1991, reported for the first time a dye-sensitized solar cell (Dye Sensitized Solar Cell, DSSC) with a photoelectric conversion efficiency of 7.9%, creating a new field of solar cell research and development. DSSC is composed of photoanode, counter electrode, dye sensitizer, conductive substrate, electrolyte and other parts, among which photoanode is the core component of DSSC. Nano-ZnO material is an important photoanode material for DSSC, which has been extensively studied at present. A varie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542Y02P70/50
Inventor 王艳香孙健郭平春李家科赵学国
Owner JINGDEZHEN CERAMIC UNIV