A kind of preparation method of high-efficiency ZNO-based dye-sensitized solar cell photoanode and the photoanode it makes

A technology for solar cells and dye sensitization, applied in the field of photoanode, dye-sensitized solar cell ZnO-based photoanode preparation, can solve the problems of uneven film, sparse arrangement of nanosheets, unsatisfactory photoelectric conversion efficiency, etc. The effect of film inhomogeneity, reduction of roughness, and tight arrangement

Active Publication Date: 2016-08-17
JINGDEZHEN CERAMIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The ZnO nanosheets vertical to the conductive substrate are a potential photoanode, but the current preparation methods of this kind of photoanode have the disadvantages that the prepared film is not uniform, and the nanosheets are sparsely arranged on the conductive substrate; at the same time, close to the conductive The nanosheet of the substrate is not a vertical conductive substrate, but has a certain inclination, and the photoelectric conversion efficiency is still not ideal

Method used

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  • A kind of preparation method of high-efficiency ZNO-based dye-sensitized solar cell photoanode and the photoanode it makes
  • A kind of preparation method of high-efficiency ZNO-based dye-sensitized solar cell photoanode and the photoanode it makes
  • A kind of preparation method of high-efficiency ZNO-based dye-sensitized solar cell photoanode and the photoanode it makes

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Experimental program
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Effect test

Embodiment 1

[0036] The preparation method of the high-efficiency ZnO-based dye-sensitized solar cell photoanode in this embodiment, the steps are as follows:

[0037] (1) Preparation of ZnO sol

[0038] Put 50ml of ethylene glycol methyl ether solution on a magnetic stirrer and stir, and add 4.39g of zinc acetate dihydrate and 1.20ml of monoethanolamine while stirring, and stir at 25°C for 10h to obtain a transparent ZnO sol ; The concentration of zinc acetate dihydrate and monoethanolamine in ethylene glycol methyl ether solution is 0.4M;

[0039] (2) Preparation of ZnO dense barrier layer

[0040] Using the impregnation method, the cleaned conductive substrate was immersed in the above-mentioned ZnO sol, and the conductive substrate was taken out at a uniform speed after 4s; Calcined in a muffle furnace, the calcination temperature is 450°C, and the holding time is 30min, so that the ZnO dense barrier layer is coated on the conductive substrate; the heating rate of drying and calcinatio...

Embodiment 2

[0047] The preparation method of the high-efficiency ZnO-based dye-sensitized solar cell photoanode in this embodiment, the steps are as follows:

[0048] (1) Preparation of ZnO sol

[0049] Put 50ml of ethylene glycol methyl ether solution on a magnetic stirrer and stir, and add 4.39g of zinc acetate dihydrate and 1.20ml of monoethanolamine while stirring, and stir at 25°C for 10h to obtain a transparent ZnO sol The concentration of zinc acetate dihydrate and monoethanolamine in ethylene glycol methyl ether solution is 0.4M;

[0050] (2) Preparation of ZnO dense barrier layer

[0051] Using the impregnation method, the cleaned conductive substrate was immersed in the above-mentioned ZnO sol, and the conductive substrate was taken out at a uniform speed after 4s; Calcined in a muffle furnace, the calcination temperature is 450°C, and the holding time is 30min, so that the ZnO dense barrier layer is coated on the conductive substrate; the heating rate of drying and calcinatio...

Embodiment 3

[0058] (1) Preparation of ZnO sol

[0059] Put 50ml of ethylene glycol methyl ether solution on a magnetic stirrer and stir, and add 4.39g of zinc acetate dihydrate and 1.20ml of monoethanolamine while stirring, and stir at 25°C for 10h to obtain a transparent ZnO sol ; The concentration of zinc acetate dihydrate and monoethanolamine in ethylene glycol methyl ether solution is 0.4M;

[0060] (2) Preparation of ZnO dense barrier layer

[0061] Using the impregnation method, the cleaned conductive substrate was immersed in the above-mentioned ZnO sol, and the conductive substrate was taken out at a uniform speed after 4s; Calcined in a muffle furnace, the calcination temperature is 450°C, and the holding time is 30min, so that the ZnO dense barrier layer is coated on the conductive substrate; the heating rate of drying and calcination is 8°C / min;

[0062] (3) Preparation of ZnO nanosheet films on vertical conductive substrates

[0063] (3-1) Preparation of Growth Solution

...

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Abstract

The invention discloses a method for preparing a photoanode of a high-efficiency ZnO-based dye-sensitized solar cell. After the ZnO sol is prepared, the ZnO sol is used to prepare a ZnO dense barrier layer on a conductive substrate; Water nitrate and urea aqueous solution are used as the growth solution, and the growth solution is firstly preheated by segmental temperature control, and then the growth reaction is carried out to prepare large-area uniform and dense ZnO-based nanosheet dye-sensitized solar cells on the conductive substrate. anodic film. In addition, the photoanode prepared by the above preparation method is also disclosed. The present invention obtains ZnO nano-sheets with a vertical standing height of micron level and two kinds of pore structures on the conductive substrate, and prepares a ZnO nano-sheet film with large area uniformity and tight arrangement, which effectively solves the problem of ZnO-based dye-sensitized solar energy. The problem of slow electron transport and electron recombination at the photoanode of the battery achieves a high photoelectric conversion efficiency.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a method for preparing a dye-sensitized solar cell ZnO-based photoanode and the prepared photoanode. Background technique [0002] Energy issues restrict economic development, and solar energy, as an inexhaustible, green and environmentally friendly energy, has attracted much attention. At present, the most widely studied 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 the production process. year 1991, For the first time, they assembled 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 oth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/042H01G9/20
CPCY02E10/542
Inventor 王艳香孙健郭平春杨志胜黄丽群
Owner JINGDEZHEN CERAMIC UNIV
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