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Method for preparing solar cell surface absorption enhancement layer

A solar cell and surface absorption technology, which is applied in the field of solar cells, can solve the problems of low photon quantum efficiency of titanium dioxide, and achieve the effects of good light absorption enhancement, increased service life, and improved photoelectric conversion rate

Active Publication Date: 2017-01-04
江苏锦尚新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the problem of low photon efficiency of titanium dioxide, the present invention provides a method for preparing a solar cell surface absorption enhancement layer. The present invention prepares an opal structure film by configuring polystyrene nano-microsphere emulsion, and Using it as a template, titanium dioxide is infiltrated into the opal structure film, and the opal structure film is removed by sintering to obtain an inverse opal structure titanium dioxide film, and then silver nanoparticles are deposited in the gaps of the inverse opal structure titanium dioxide film, and silver nanoparticles are used to effectively inhibit Electron-hole recombination and light absorption enhancement effect, and finally treated with titanium tetrachloride solution to form a special network nanoporous structure on the surface of the film, improve electron mobility and prolong electron life, and obtain enhanced surface absorption of solar cells Floor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Weigh 1g of polyvinylpyrrolidone and add it to 200mL of 70% ethanol solution, stir at 300r / min until the polyvinylpyrrolidone is completely dissolved, add 10mL of styrene monomer, 1g of azobisisobutylcyanide, continue stirring for 10min, Under atmosphere, heat to 70°C, react for 4 hours, put the reaction solution into a centrifuge, and centrifuge at 1000r / min to obtain polystyrene nanospheres; wash the above polystyrene with absolute ethanol and deionized water respectively Nanospheres once, and passed through a 200-mesh sieve, the sieved polystyrene nanospheres were placed in a freeze-drying oven to freeze-dry, and 0.03 g of dried polystyrene nanospheres were weighed and added to 300 mL to remove Ultrasonic dispersion with 300W ultrasonic wave for 15min in ionized water to obtain polystyrene emulsion. Vertically immerse FTO conductive glass with a size of 20cm×10cm into the emulsion and dry it in a drying oven at 40°C for 20h. Take out the conductive glass to obtain opa...

example 2

[0021]Weigh 1.5g of polyvinylpyrrolidone and add it to 250mL of 70% ethanol solution, stir at 350r / min until the polyvinylpyrrolidone is completely dissolved, add 12mL of styrene monomer, 1.5g of azobisisobutylcyanide, and continue stirring for 12min. Under a nitrogen atmosphere, heat to 75°C, react for 5 hours, put the reaction liquid into a centrifuge, and centrifuge at 1500r / min to obtain polystyrene nano-microspheres; wash the above-mentioned polystyrene microspheres with absolute ethanol and deionized water, respectively. Styrene nanospheres were passed through a 200-mesh sieve for 2 times, and the sieved polystyrene nanospheres were placed in a freeze-drying box to freeze-dry, and 0.04 g of dried polystyrene nanospheres were weighed and added In 400mL of deionized water, use 300W ultrasonic wave to disperse for 18 minutes to obtain polystyrene emulsion. Vertically immerse FTO conductive glass with a size of 20cm×10cm in the emulsion, and dry it in a drying oven at 45°C fo...

example 3

[0024] Weigh 2g of polyvinylpyrrolidone and add it to 300mL of 70% ethanol solution, stir at 400r / min until the polyvinylpyrrolidone is completely dissolved, add 15mL of styrene monomer, 2g of azobisisobutylcyanide, continue stirring for 15min, Under atmosphere, heat to 80°C, react for 6 hours, put the reaction solution into a centrifuge, and centrifuge at 2000r / min to obtain polystyrene nanospheres; wash the above polystyrene with absolute ethanol and deionized water respectively The nanospheres were passed through a 200-mesh sieve for 3 times, and the sieved polystyrene nanospheres were placed in a freeze-drying oven to freeze-dry, and 0.05 g of dried polystyrene nanospheres were weighed and added to 500 mL to remove Use 300W ultrasonic wave to disperse for 20 minutes in ionized water to obtain polystyrene emulsion. Vertically immerse FTO conductive glass with a size of 20cm×10cm into the emulsion and dry it in a drying oven at 50°C for 24 hours. Take out the conductive glass...

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Abstract

The invention relates to a method for preparing a solar cell surface absorption enhancement layer, belonging to the technical field of solar cells. For the problem of low efficiency of a TiO2 light quantum, the invention provides the method for preparing the solar cell surface absorption enhancement layer. An opal structure film is prepared by configuring a polystyrene nanoparticle emulsion and allowing TiO2 to penetrate into the opal structure film with the film as a template, the opal structure film is removed through sintering, and a TiO2 film with an inverse opal structure is prepared, then silver nanoparticles are deposited in the gap of the TiO2 film with the inverse opal structure, the silver nanoparticles are used to inhibit an electron hole compound effect and improve a light absorption enhancement effect, finally the processing is carried out by using a titanium tetrachloride solution, a special net nano porous structure is formed at the surface of the film, the electron mobility is improved, an electron life is prolonged, and the solar cell surface absorption enhancement layer is prepared.

Description

technical field [0001] The invention relates to a method for preparing a surface absorption enhancing layer of a solar cell, belonging to the technical field of solar cells. Background technique [0002] Energy is the driving force behind the development and progress of human society. While the current social progress and the rapid development of science and technology have greatly improved people's quality of life, they have also caused increasingly prominent energy and environmental problems. Solar energy has the characteristics of cleanness, abundant reserves and no geographical limitations. Moreover, the energy of solar radiation is sufficient to meet all human needs for energy, and the conversion of solar energy to electrical energy through the photovoltaic effect is an important way to utilize solar energy. In this field, due to the characteristics of easy installation and high utilization rate of solar cells, it has received more and more attention. [0003] Titani...

Claims

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Application Information

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IPC IPC(8): H01G9/20
CPCH01G9/2031Y02E10/542Y02P70/50
Inventor 佟明王龙
Owner 江苏锦尚新能源有限公司
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