Light conversion film capable of improving efficiency of silicon solar cell and preparation and application thereof

A technology for silicon solar cells and light conversion films, which can be applied in sustainable manufacturing/processing, circuits, electrical components, etc., and can solve the problems of small refractive index, unsuitable for mass production, and more outgoing light.

Pending Publication Date: 2021-07-06
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has many disadvantages: the combination efficiency of phosphor powder and solar cells is unstable, the improvement of photoelectric conversion efficiency of solar cells is extremely low, the energy utilization efficiency of light sources is low, and it is not suitable for industrial mass production, etc.
Although this method can overcome the lower spectral response in the short-wave region and be more directly applied to the surface of solar cells, its biggest disa

Method used

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  • Light conversion film capable of improving efficiency of silicon solar cell and preparation and application thereof
  • Light conversion film capable of improving efficiency of silicon solar cell and preparation and application thereof
  • Light conversion film capable of improving efficiency of silicon solar cell and preparation and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Weigh 10.0g of glue A and 10.0g of glue B in epoxy resin AB glue, and weigh 0.2g of commercial red phosphor CaAlSiN 3 :Eu 2+ (Powder-to-glue ratio is 1:100) Put it into a vacuum degassing machine and vacuumize and stir for 3 minutes to obtain a rubber powder mixture; make a barrel-shaped cuboid mold with a length of 5 cm, a width of 4 cm, and a height of 1 cm with the film used for the copier ; Use transparent plastic film to make a sheet with a length of 5 cm and a width of 4 cm. One end face of the sheet has a saw-toothed structure, and the saw-toothed structure is composed of a plurality of saw-toothed "V" shaped longitudinal sections arranged side by side. Composition, the height of the sawtooth is greater than 0.5mm, and the angle between the inclined surface and the horizontal plane in the sawtooth is 70°; put the rubber powder mixture in the oven for 20 minutes and pre-dry it, and put the thin slice on the upper surface of the semi-solidified mixture, so that Th...

Embodiment 2

[0050] Weigh 10.0g of glue A and 10.0g of glue B in the epoxy resin AB glue, and weigh 0.222g of red fluorescent powder Y 2 BaAl 4 SiO 12 : Ce 3+ ,Cr 3+ (Powder-to-glue ratio is 1:90) Put it into a vacuum degassing machine and vacuumize and stir for 3 minutes to obtain a rubber powder mixture; use a film for a copier to make a barrel-shaped cuboid mold with a length of 5 cm, a width of 4 cm, and a height of 1 cm ; Use transparent plastic film to make a sheet with a length of 5 cm and a width of 4 cm. One end face of the sheet has a saw-toothed structure, and the saw-toothed structure is composed of a plurality of saw-toothed "V" shaped longitudinal sections arranged side by side. Composition, the height of the sawtooth is greater than 0.5mm, and the angle between the inclined surface and the horizontal plane in the sawtooth is 70°; put the rubber powder mixture in the oven for 20 minutes and pre-dry it, and put the thin slice on the upper surface of the semi-solidified mixt...

Embodiment 3

[0053] Weigh 10.0g of glue A and 10.0g of glue B in epoxy resin AB glue, and weigh 0.182g of red phosphor Sr 4 al 14 o 25 :Mn 4+ (Powder-to-glue ratio is 1:110) Put it into a vacuum degassing machine and vacuumize and stir for 3 minutes to obtain a rubber powder mixture; make a barrel-shaped cuboid mold with a length of 5 cm, a width of 4 cm, and a height of 1 cm with the film used for the copier ; Use transparent plastic film to make a sheet with a length of 5 cm and a width of 4 cm. One end face of the sheet has a saw-toothed structure, and the saw-toothed structure is composed of a plurality of saw-toothed "V" shaped longitudinal sections arranged side by side. Composition, the height of the sawtooth is greater than 0.5mm, and the angle between the inclined surface and the horizontal plane in the sawtooth is 70°; put the rubber powder mixture in the oven for 20 minutes and pre-dry it, and put the thin slice on the upper surface of the semi-solidified mixture, so that The...

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Abstract

The invention discloses a light conversion film capable of improving the efficiency of a silicon solar cell and preparation and application thereof. The light conversion film is made of fluorescent powder and transparent polymer and is provided with a zigzag surface, the height of the minimum sawtooth in the zigzag surface is larger than 0.5 mm, the included angle between adjacent inclined planes in the sawteeth is smaller than or equal to 60 degrees, and the included angle between the inclined planes and the horizontal plane is larger than or equal to 60 degrees or smaller than or equal to 120 degrees. The preparation method comprises: uniformly stirring the fluorescent powder and the transparent polymer after vacuumizing to obtain a rubber powder mixture; and preparing a mold and a sheet with a zigzag structure on the surface by using a transparent film, pouring the rubber powder mixture into the mold, pre-drying, putting the sheet on the semi-solidified rubber powder mixture, the zigzag structure facing the semi-solidified mixture, pressing, shaping and drying to prepare the light conversion film capable of improving the efficiency of the silicon solar cell. The light conversion film inhibits reflection light in the film from emitting through total reflection and a zigzag structure, is used for a silicon-based solar cell, and improves the utilization rate of solar energy.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials and relates to a light conversion film, in particular to a light conversion film capable of improving the photoelectric conversion rate of a silicon solar cell; the invention also relates to a preparation method and application of the light conversion film. Background technique [0002] Solar energy is considered to be one of the most important energy sources in the 21st century. It has incomparable advantages over traditional fossil energy such as coal and oil. Solar cells can convert solar energy into electrical energy, which is a long-term sustainable source generation method with green and sustainable characteristics. However, the energy utilization rate of existing mainstream silicon-based solar cells on the market is low, and the photoelectric conversion rate is about 20%. The main reasons for the low photoelectric conversion efficiency of silicon solar cells are: the poor sp...

Claims

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Application Information

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IPC IPC(8): H01L31/0216H01L31/0236H01L31/18
CPCH01L31/02168H01L31/0236H01L31/1876Y02P70/50Y02E10/50
Inventor 王育华李亦昕濑户孝俊
Owner LANZHOU UNIVERSITY
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