Method for quickly preparing silkscreen printing paste for photo anodes of dye-sensitized solar cells

A solar cell and screen printing technology, applied in photosensitive equipment, cable/conductor manufacturing, circuits, etc., can solve problems such as being unsuitable for industrial production, unable to prepare high-quality, complicated preparation processes, and achieve uniform film production without cracking, The effect of high photoelectric conversion efficiency and simple preparation steps

Active Publication Date: 2014-07-02
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Chinese patent (publication number 101699588A) discloses a preparation method of oily titanium dioxide slurry. However, this method first prepares titanium dioxide aqueous slurry, heats and concentrates to remove water and then prepares oily slurry. The preparation process is complicated and not suitable for industrial production
Chinese patent (publication number 101314523) discloses a method for preparing titanium dioxide slurry by grinding method. However, the titanium dioxide slurry prepared by this method is made into a film by the doctor blade method, which cannot be quickly and easily prepared by screen printing. High-quality, large-area and thin film Thickness-controllable TiO2 thin films

Method used

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  • Method for quickly preparing silkscreen printing paste for photo anodes of dye-sensitized solar cells
  • Method for quickly preparing silkscreen printing paste for photo anodes of dye-sensitized solar cells
  • Method for quickly preparing silkscreen printing paste for photo anodes of dye-sensitized solar cells

Examples

Experimental program
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Effect test

Embodiment 1

[0059] (1) Commercially purchased P25 titanium dioxide powder, lauric acid, and monoalkoxy pyrophosphate titanate coupling agent with a mass ratio of 2:0.1:0.01:1:6 (purchased from Changzhou Yabang Yayu Auxiliary Ltd), ethyl cellulose and terpineol blend.

[0060] (2) Put the mixture in a planetary ball mill, set the rotation speed at 600 revolutions per minute (rpm), and run for 12 hours to obtain a titanium dioxide slurry for screen printing.

[0061] (3) Preparation of titanium dioxide thin film photoanode.

[0062] Use indium tin oxide conductive glass as the conductive substrate, ultrasonically clean the surface of the conductive glass with a mixed solution of absolute ethanol and acetone with a volume ratio of 1:1 for 10 minutes, rinse it with deionized water three times after cleaning, and then place it in an oven at 100°C drying. The titanium dioxide paste was printed on the surface of the conductive glass by screen printing, the thickness of the titanium dioxide fil...

Embodiment 2

[0072] According to the method in Example 1, except that the following steps are modified, other steps are identical.

[0073] When preparing the titanium dioxide slurry, the commercially available titanium dioxide powder was Ishihara ST21 titanium dioxide powder (purchased from Ishihara Co., Ltd., Japan). During mechanical dispersion, the rotation speed of the planetary ball mill was set at 1000 rpm, and the running time was 6 hours.

[0074] When preparing the dye-sensitized single-layer titanium dioxide ternary nanocrystalline film photoanode, the concentration of the ethanol solution of N719 dye (purchased from Solaronix, Switzerland) was 0.4mmol / L.

[0075] Measure and calculate its short-circuit current (mA / cm2), open-circuit voltage (volt-ampere), fill factor (%) and cell conversion efficiency (%) according to the measurement method of the dye-sensitized solar cell of the present invention. The results are shown in Table 1 below.

[0076] Additionally, by figure 2 I...

Embodiment 3

[0078] According to the method in Example 1, except that the following steps are modified, other steps are identical.

[0079]When preparing the titanium dioxide slurry, the commercially available titanium dioxide powder was Degussa P25 (purchased from Degussa Company), and the surfactant was Triton-100 (a kind of polyethylene glycol octylphenyl ether, purchased from Sinopharm Group Chemical Reagent Co., Ltd.), the hyperdispersive coating agent is a chelating titanate coupling agent (purchased from Changzhou Yabang Yayu Auxiliary Co., Ltd.), titanium dioxide, surfactant, hyperdispersive coating agent, viscosity adjustment The mass ratio of agent and solvent is 2:0.1:0.05:0.4:8. During mechanical dispersion, the planetary ball mill was set at a rotating speed of 500rpm, and the running time was 10 hours.

[0080] When preparing the titanium dioxide thin film photoanode, the thickness of the titanium dioxide film is 22 microns.

[0081] When preparing the dye-sensitized single...

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Abstract

The invention relates to a method for quickly preparing silkscreen printing paste for photo anodes of dye-sensitized solar cells. The method for preparing silkscreen printing paste for photo anodes of dye-sensitized solar cells comprises the steps of mixing anatase titanium dioxide nano-particles, surfactant, super-dispersing coating agent, viscosity regulator and solvent, and dispersing the mixture for 0.5-12 hours by a mechanical dispersion method. The prepared silkscreen printing paste for photo anodes of dye-sensitized solar cells is evenly dispersed, has good stability and can be placed for a few months without settlement. When titanium dioxide paste for silk-screen printing is used in dye-sensitized solar cells, more than 9% photoelectric conversion efficiency can be obtained under light intensity of 100mW / cm<2>. The silk-screen printing titanium dioxide paste preparing method of the invention has the advantages of simple operation, readily available equipment, short synthesis cycle, low manufacturing cost, high repetition performance and good industrialized application prospect.

Description

technical field [0001] The invention relates to a rapid preparation method of titanium dioxide slurry for screen printing, more specifically, relates to a rapid preparation method of titanium dioxide slurry for screen printing which can be applied to the photoanode of dye-sensitized solar cells. technical background [0002] The shortage of non-renewable energy such as coal and oil and the aggravation of environmental pollution make it more urgent to effectively utilize safe, clean, pollution-free solar energy resources that are not limited by geographical location. Solar cells, a new energy field that converts solar energy into electrical energy, have become the focus of many researchers. Among various types of solar cells, dye-sensitized solar cells have attracted widespread attention due to their high photoelectric conversion efficiency, simple preparation process, low cost, and low dependence on light intensity. [0003] A dye-sensitized solar cell mainly includes a sem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01G9/042H01G9/20
CPCY02E10/542
Inventor 邵君杨松旺李勇明刘岩
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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