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Microstructure light trapping method for single crystal PERC solar cell

A solar cell and microstructure technology, applied in the field of solar cells, can solve the problems of low conversion efficiency and low use efficiency of solar cells, and achieve the effects of improving electrical conversion efficiency, increasing use efficiency, and improving technical effects

Pending Publication Date: 2022-01-07
江苏晶旺新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of science and technology, human's demand for energy continues to increase, and traditional energy has gradually been unable to meet the demand. Photovoltaic power generation, as the main source of energy that humans have explored in recent years, has achieved rapid development. Photovoltaic power generation can be While providing effective and high-quality energy, it can minimize the damage to the earth's environment; and solar energy is an inexhaustible energy source. Solar cells absorb sunlight and can directly convert solar energy Therefore, it is regarded as one of the green energy sources; however, the conversion efficiency of traditional solar cells is low, resulting in low efficiency of use. Therefore, we propose a microstructure for monocrystalline PERC solar cells. structured light trapping method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A microstructure light trapping method for single crystal PERC solar cells, comprising the steps of:

[0019] Step 1: Select a suitable base material and carry out related tests;

[0020] Step 2: Prepare the Ag thin film at room temperature by using the magnetron sputtering method, and after standing for three hours, carry out in-situ annealing on the Ag thin film by related equipment, thereby forming Ag core nanoparticles;

[0021] Step 3: Reuse the micron-scale periodic structure as the light-trapping part of the battery, or the micron-scale periodic structure and Ag core nanoparticles together as the light-trapping structure of the battery;

[0022] Step 4: Attach the light trapping structure of the battery proposed in the above steps to the base material, etch the light trapping structure, remove the junction area on the edge and the back, and at this time further cover the light trapping substrate on the battery;

[0023] Step 5: Improve the process of solar cell ...

Embodiment 2

[0030] A microstructure light trapping method for single crystal PERC solar cells, comprising the steps of:

[0031] Step 1: Select a suitable base material and carry out related tests;

[0032] Step 2: Prepare the Ag thin film at room temperature by using the magnetron sputtering method, and after standing for four hours, carry out in-situ annealing on the Ag thin film by related equipment, thereby forming Ag core nanoparticles;

[0033] Step 3: Reuse the micron-scale periodic structure as the light-trapping part of the battery, or the micron-scale periodic structure and Ag core nanoparticles together as the light-trapping structure of the battery;

[0034] Step 4: Attach the light trapping structure of the battery proposed in the above steps to the base material, etch the light trapping structure, remove the junction area on the edge and the back, and at this time further cover the light trapping substrate on the battery;

[0035] Step 5: Improve the process of solar cell d...

Embodiment 3

[0042] A microstructure light trapping method for single crystal PERC solar cells, comprising the steps of:

[0043] Step 1: Select a suitable base material and carry out related tests;

[0044] Step 2: Prepare the Ag thin film at room temperature by using the magnetron sputtering method, and after standing for five hours, carry out in-situ annealing on the Ag thin film by related equipment to form Ag core nanoparticles;

[0045] Step 3: Reuse the micron-scale periodic structure as the light-trapping part of the battery, or the micron-scale periodic structure and Ag core nanoparticles together as the light-trapping structure of the battery;

[0046] Step 4: Attach the light trapping structure of the battery proposed in the above steps to the base material, etch the light trapping structure, remove the junction area on the edge and the back, and at this time further cover the light trapping substrate on the battery;

[0047] Step 5: Improve the process of solar cell devices. A...

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Abstract

The invention discloses a microstructure light trapping method for a single crystal PERC solar cell in the technical field of solar cells, and the method comprises the steps: 1, selecting a consistent matrix material, and carrying out the related detection; 2, preparing an Ag thin film at room temperature by adopting a magnetron sputtering method, standing for 3-5 hours, and then carrying out in-situ annealing on the Ag thin film through related equipment, so as to form Ag core nanoparticles; 5, improving the technology of a solar cell device, wherein at the moment, the light trapping structure and the suede texture in the cell jointly play a light trapping role, the suede texture has a strong effect on short waves, the light trapping substrate has a strong light trapping role on long waves, the suede texture and the light trapping substrate complement for each other, and light absorption of the thin film cell is effectively improved; the micron-scale periodic structure is used as a cell light trapping part, or the micron-scale periodic structure and the Ag core nanoparticles are jointly used as a cell light trapping structure to be combined with the single-crystal PERC solar cell, so that the electric conversion efficiency is greatly improved, the use efficiency is improved, and the technical effect is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a microstructure light trapping method for single crystal PERC solar cells. Background technique [0002] With the continuous development of science and technology, human's demand for energy continues to increase, and traditional energy has gradually been unable to meet the demand. Photovoltaic power generation, as the main source of energy that humans have explored in recent years, has achieved rapid development. Photovoltaic power generation can be While providing effective and high-quality energy, it can minimize the damage to the earth's environment; and solar energy is an inexhaustible energy source. Solar cells absorb sunlight and can directly convert solar energy Therefore, it is regarded as one of the green energy sources; however, the conversion efficiency of traditional solar cells is low, resulting in low efficiency of use. Therefore, we propose a microstructure fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0236H01L31/18
CPCH01L31/02363H01L31/18Y02E10/50
Inventor 何飞徐小萍
Owner 江苏晶旺新能源科技有限公司