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Preparation method of composite core-shell nano hollow ball and application of composite core-shell nano hollow ball in dye-sensitized solar cell

A technology of hollow spheres and composite cores, applied in the field of solar cells, can solve problems such as difficulty and limited semiconductor materials, and achieve the effects of easy operation, improved light utilization, and reduced surface defects

Active Publication Date: 2017-09-15
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing technology of dye-sensitized solar cells also has certain defects: although the photoelectric conversion efficiency exceeds 11%, it is difficult to continue to improve, and the semiconductor materials used in dye-sensitized solar cells are also limited.

Method used

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  • Preparation method of composite core-shell nano hollow ball and application of composite core-shell nano hollow ball in dye-sensitized solar cell
  • Preparation method of composite core-shell nano hollow ball and application of composite core-shell nano hollow ball in dye-sensitized solar cell
  • Preparation method of composite core-shell nano hollow ball and application of composite core-shell nano hollow ball in dye-sensitized solar cell

Examples

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example 1

[0034] 1. Double-layer CeO 2 : Preparation of Yb / Er:

[0035] (1) Under ultrasonic conditions, completely disperse 1 g of urea in 170 mL of ultrapure water to obtain a urea dispersion, then add 80 mL of trisodium citrate aqueous solution with a concentration of 10 mM / L to the urea dispersion, and stir vigorously for 15 minutes to obtain Urea dispersant of trisodium citrate.

[0036] (2) Dissolve 1.2g of cerous chloride heptahydrate in 32mL of water to form a solution with a concentration of 0.1M. Take 23.8mL and add it to the above-mentioned urea dispersant of trisodium citrate. After stirring for 15min, add 74uL with a concentration of 0.1M M of ytterbium nitrate solution and 740uL of 0.1M erbium nitrate solution. Under vigorous stirring, 1 mL of hydrogen peroxide solution with a concentration of 30% (mass percentage) was added dropwise, and a light yellow mixed solution was obtained after 45 min.

[0037] (3) The obtained pale yellow mixed solution was transferred to a hi...

example 2

[0046] 1. Double-layer CeO 2 : Preparation of Yb / Er:

[0047] (1) Under ultrasonic conditions, completely disperse 2 g of urea in 340 mL of ultrapure water to obtain a urea dispersion, then add 160 mL of trisodium citrate aqueous solution with a concentration of 10 mM to the urea dispersion, stir vigorously for 15 minutes, and obtain citric acid Trisodium urea dispersant.

[0048] (2) Dissolve 2.4g of cerous chloride heptahydrate in 64mL of water to form a solution with a concentration of 0.1M. Take 47.6mL and add it to the above-mentioned urea dispersant of trisodium citrate. After stirring for 15min, add 148uL with a concentration of 0.1M M of ytterbium nitrate solution and 1.48 mL of 0.1M erbium nitrate solution. Under vigorous stirring, 2 mL of hydrogen peroxide solution with a concentration of 30% (mass percentage) was added dropwise, and a light yellow mixed solution was obtained after 45 min.

[0049] (3) Transfer the obtained pale yellow mixed solution to a high pre...

example 3

[0058] 1. Double-layer CeO 2 : Preparation of Yb / Er:

[0059] (1) Under ultrasonic conditions, completely disperse 10 g of urea in 1.7 L of ultrapure water to obtain a urea dispersion, then add 800 mL of trisodium citrate aqueous solution with a concentration of 10 mM / L to the urea dispersion, and stir vigorously for 15 minutes , to obtain a urea dispersant of trisodium citrate.

[0060] (2) Dissolve 12g of cerous chloride heptahydrate in 320mL of water and prepare a solution with a concentration of 0.1M. Take 238mL and add it to the above-mentioned urea dispersant of trisodium citrate. After stirring for 15 minutes, add 740ul of 0.1M Ytterbium nitrate solution and 7.4 ml of 0.1 M erbium nitrate solution. Under vigorous stirring, 10 mL of hydrogen peroxide solution with a concentration of 30% (mass percentage) was added dropwise, and a light yellow mixed solution was obtained after 45 min.

[0061] (3) Transfer the obtained pale yellow mixed solution to a high pressure reac...

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Abstract

The invention provides a preparation method of a composite core-shell nano hollow ball and application of the composite core-shell nano hollow ball in a dye-sensitized solar cell and belongs to the technical field of solar cells. The method comprises steps of mixing cerous chloride heptahydrate with trisodium citrate, ytterbium nitrate, erbium nitrate water solution and hydrogen peroxide solution to carry out a hydrothermal reaction so as to obtain a double-layered structure CeO2:Yb / Er hollow ball nano ball; dispersing the nano ball in isopropanol; mixing the obtained solution with ammonia water and tetraethyl orthosilicate to carry out a water bath reaction so as to obtain a Ce02:Yb / Er@SiO2 hollow ball nano ball; and mixing the obtained nano ball with polyvinylpyrrolidone, ethylene glycol, silver nitrate and sodium borohydride water solution and carrying out reactions so as to obtain a double-layered structure Ce02:Yb / Er@SiO2@Ag composite core-shell nano hollow ball. By coating the material on the surface of nano-titanium dioxide slurry, and calcinating the obtained material and dipping the obtained material into N719 dyes, a photoanode material of a dye-sensitized solar cell is obtained.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a preparation method of a dye-sensitized solar cell photoanode material. Background technique [0002] With the sharp increase of energy crisis and environmental problems, people pay more and more attention to new clean energy. Solar energy is a clean energy with abundant reserves. Reasonable development and utilization of solar energy will greatly improve people's lives. Solar cells realize the direct conversion of solar energy into electrical energy, which is also one of the basic ways for people to use solar energy. Dye-sensitized solar cells, as a kind of solar cells, have the advantages of low cost, stability, high efficiency, and easy fabrication, so they have very broad development prospects. [0003] To obtain a high-efficiency dye-sensitized solar cell, the nanomaterials that constitute the photoanode must have a high specific surface area and be able ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/042
CPCH01G9/2036H01G9/2045Y02E10/542
Inventor 白静怡孙小璐王佳丽刁国旺
Owner YANGZHOU UNIV
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