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Titanium dioxide thin film and preparation thereof

A titanium dioxide and thin film technology, which is applied in the field of preparation of the titanium dioxide thin film, can solve the problems of high production cost, complex process, time-consuming and laborious, etc., and achieve the effects of low cost, uniform film formation and simple preparation method

Active Publication Date: 2008-12-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the titanium dioxide film prepared by this method has a good film-forming effect and strong adhesion, it needs to be heated at 80°C for 8 hours when preparing the titanium dioxide slurry, and the two methods provided when using the obtained slurry to form a film need multiple times. The coating film can only be formed into a film, and the process is complicated; especially in the second method, heating at 500°C for 1 minute and cooling to room temperature for many times consumes a lot of energy, takes a long time, is time-consuming and laborious, and the production cost is high.

Method used

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  • Titanium dioxide thin film and preparation thereof
  • Titanium dioxide thin film and preparation thereof
  • Titanium dioxide thin film and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 3gTiO 2 , 0.15g of polyethylene glycol 2000, 0.3mL of acetylacetone, 0.5mL of nitric acid, and 5mL of deionized water were mixed and slowly ground, and then the remaining 1mL of deionized water was slowly added to it in a small amount. After grinding for 50 minutes, 0.08mL of koji was added. After pulling through the OP-10 emulsifier, continue grinding for 20 minutes to obtain the required titanium dioxide slurry. Tape around the sides of the conductive glass to form a groove, see image 3 . Scrape the above slurry on the conductive glass with a scalpel, and dry the prepared film at room temperature for 24 hours. Put the dried film in a muffle furnace for sintering, raise the temperature from room temperature to 120°C at a rate of 1°C / min, keep it for 30 minutes, then raise it to 450°C at a rate of 2°C / min, keep it for 30 minutes, anneal, and cool to room temperature A titanium dioxide film with a thickness of 8 microns was obtained. The 200 times SEM photo of ...

Embodiment 2

[0025] Take 4g TiO2, 1.2g polyethylene glycol 2000, 0.3mL acetylacetone, 1.2mL nitric acid, 8mL deionized water and mix them slowly, then slowly add the remaining 12mL deionized water into it, after grinding for 40min, add 0.3 After adding mL Triton OP-10 emulsifier, continue grinding for 30 minutes to obtain the required titanium dioxide slurry. Use slightly thicker tape to fix around the conductive glass to form a groove, see image 3 . Scrape the above slurry on the conductive glass with a scalpel, and dry the prepared film at room temperature for 12 hours. Put the dried film in a muffle furnace for sintering, raise the temperature from room temperature to 100°C at a rate of 2°C / min, keep it for 40 minutes, then raise it to 499°C at a rate of 5°C / min, keep it for 45 minutes, anneal, and cool to room temperature A titanium dioxide film with a thickness of 18 microns was obtained

Embodiment 3

[0027] Take 3gTiO 2 , 0.6g of polyethylene glycol 2000, 0.04mL of acetylacetone, 0.45mL of nitric acid, and 10mL of deionized water were mixed and slowly ground, and then the remaining 8mL of deionized water was slowly added in a small amount. After grinding for 60 minutes, 0.4mL of koji was added. After pulling through the OP-10 emulsifier, continue grinding for 10 minutes to obtain the required titanium dioxide slurry. Tape around the sides of the conductive glass to form a groove, see image 3 . Scrape the above slurry on the conductive glass with a scalpel, and dry the prepared film at room temperature for 48 hours. Put the dried film in a muffle furnace for sintering, raise the temperature from room temperature to 150°C at a rate of 1°C / min, keep it for 20 minutes, then raise it to 440°C at a rate of 10°C / min, keep it for 60 minutes, anneal, and cool to room temperature A titanium dioxide film with a thickness of 12 micrometers was obtained.

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Abstract

The invention discloses a titanium dioxide film and a preparation method thereof. The titanium dioxide film comprises the following compositions of titanium dioxide, a dispersant, an emulsifier, a pore-making agent, water and pure nitric acid; the titanium dioxide, the dispersant, the pore-making agent, part of the water and the nitric acid are mixed and slowly ground; the mixture is added with the residual water slowly, ground for 40 to 60 minutes, added with the emulsifier and continuously ground to produce a titanium dioxide sizing agent; and a film is prepared on conductive glass by a scraping knife method and dried for 12 to 48 hours at room temperature; the dried film is put into a muffle furnace for sintering, thereby producing the titanium dioxide film. The titanium dioxide film provided by the invention has the advantages of good electricity conducting performance, good film forming effect, suitable thickness, simple preparation method, low cost and uneasy cracking and can be used for a dye-sensitized solar cell.

Description

technical field [0001] The invention relates to a titanium dioxide film, in particular to a titanium dioxide film used for a dye-sensitized solar cell, and also relates to a preparation method of the titanium dioxide film. Background technique [0002] The semiconductor electrode in nano-titanium dioxide dye-sensitized solar cells is prepared from titanium dioxide film with anatase structure. Because the band gap of titanium dioxide with anatase structure is 3.2eV, titanium dioxide with anatase structure can only absorb a small proportion of ultraviolet rays with shorter wavelengths in sunlight, while most of the wavelengths in sunlight are shorter. Long rays are not used. In order to make full use of the longer wavelength part of sunlight, titanium dioxide needs to be made into a porous film so that it can absorb a layer of sensitizing dyes that can extend the absorption of light to the visible region to enhance light absorption and improve photoelectric conversion efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23
Inventor 刘倩倩董俊卿
Owner BYD CO LTD
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