Transparent dielectric paste

A transparent medium and paste technology, applied in the field of dye-sensitized solar cells, to achieve the effect of strong acid and alkali corrosion resistance and high light transmittance

Inactive Publication Date: 2011-01-19
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is to provide a transparent dielectric paste, which has an appropriate thermal transition temperature and a thermal expansion coefficient that matches the substrate glass, so as to solve the packaging problem of large-area dye-sensitized nanocrystalline solar cells

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049] Preparation of III transparent medium slurry

[0050] Weigh the inorganic glass powder according to the proportion and put it in the mixing tank, add the corresponding organic carrier, disperse and mix it on the high-speed shear dispersion equipment, and then pass the mixed slurry through the three-axis rolling mill to further promote the inorganic Dispersion of the glass powder and its fusion with the organic carrier until the fineness of the inorganic glass powder in the slurry is less than 5 μm, and the resulting slurry is filtered through a filter and vacuum defoamed to obtain a transparent medium slurry.

Embodiment 1

[0052] The preparation of I inorganic glass powder:

[0053] According to the following formula (mass percentage): 34% of PbO, 25% of B 2 o 3 , 16% SiO 2 , 18% K 2 O, 7% BeO, weigh each oxide and the corresponding carbonate such as K 2 CO 3 or boric acid.

[0054] After mixing evenly, heat it in a high-temperature solid-phase sintering furnace at 1200°C for 1 hour to obtain uniform molten glass. Pour the molten glass into a double-roll tablet press to cool it rapidly and press it into glass fragments with a thickness of about 1mm. Put the glass fragments into a ball mill jar and coarsely pulverize them on the ball mill until the particles of the glass powder are less than 1mm. The glass powder is milled in a planetary ball mill for more than 24 hours until the particle size specification D90<5 μm (D90: represents the particle size corresponding to 90% of the particle size distribution), and the inorganic glass powder for preparing the slurry is obtained.

[0055] Cast a...

Embodiment 2

[0062] The preparation of I inorganic glass powder:

[0063] According to the following formula (mass percentage): 41% PbO, 25% B 2 o 3 , 23% SiO 2 , 7.5% K 2 O, 3.5% BeO. Weigh each oxide and the corresponding carbonate such as K 2 CO 3 or boric acid H 3 BO 3 After mixing evenly, heat it in a high-temperature solid-phase sintering furnace at 1000°C for 0.5 hours to obtain a uniform molten glass; pour the molten glass into a double-roll tablet press to cool it rapidly and press it into glass fragments with a thickness of about 1mm. Coarsely pulverize the glass powder on a ball mill until the particle size of the glass powder is less than 1mm, and then ball mill the glass powder in a planetary ball mill until the particle size specification D90<10 μm (D90: represents 90% of the particle size distribution. Corresponding particle size), obtain the inorganic glass powder that is used for preparing slurry.

[0064] Preparation of II organic carrier:

[0065] Weigh (meth)a...

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Abstract

The invention discloses a transparent dielectric paste, comprising an organic carrier and inorganic glass powder dispersed in the organic carrier, wherein the mass ratio of the inorganic glass powder to the organic carrier is 60:40-90:10; the inorganic glass powder comprises PbO, B2O and SiO2 based on the mass ratio of 60-80:6-15:10-30; and the organic carrier comprises an organic solvent with the boiling point of 150-300 DEG C and a resin with the decomposition temperature of 200-350 DEG C, and the mass ratio of the organic solvent to the resin is 85:15-97:3. The transparent dielectric paste provided by the invention is formed by evenly dispersing the inorganic glass powder with insulating performance in an organic medium. The transparent dielectric paste can form a transparent dielectric layer which has high transmittance and surface flatness, proper thermal transition temperature and thermal expansion coefficient matched with substrate glass.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, in particular to a transparent medium paste for dye-sensitized solar cells. Background technique [0002] Generally, solar cells are photovoltaic elements used to convert sunlight into electricity. Unlike other energy sources, solar cells can be used without limitation, are environmentally friendly, and thus are expected to gradually become an increasingly important energy source. In particular, it is expected that solar cells can not only be charged using sunlight, but also be mounted on various portable information devices such as portable computers, mobile phones, personal portable terminals, and the like. [0003] Dye-sensitized nanocrystalline solar cells are a new generation of solar cells. In 1991, Gratzel M. published an article about dye-sensitized nanocrystal solar cells (Dye Sensitized SolarCells, referred to as DSSCs) in "Nature", which obtained a photoelectric co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B3/00H01G9/07H01G9/20H01M14/00H01L51/46
CPCY02E10/549
Inventor 汪志华
Owner IRICO
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