Solar energy cell

Abstract

The invention discloses a solar energy cell which comprises a light converging assembly, a light spot conversion assembly and a photoelectric conversion chip, wherein the light converging assembly is used for collecting sunlight and converging the collected sunlight to form convergent light; the light spot conversion assembly comprises a top surface, a bottom surface and a peripheral surface, the top surface is made of a transparent material to form a light entrance, the bottom surface is made of the transparent material to form a light exit, the peripheral surface is made of a nontransparent material, a reflecting layer is coated on an inner wall of the peripheral surface, the light entrance is connected with the light converging assembly, so that the convergent light enters a light spot converter through the light entrance, and the convergent light formed by the light converging assembly is homogenized and reshaped through reflection in the light spot conversion assembly, so that processed light beams are uniformly transmitted according to the shape of the light exit; the photoelectric conversion chip is located below the light exit of the light spot conversion assembly, and the shape and size of the photoelectric conversion chip are matched with that of the light exit. The solar energy cell can be used for obviously improving the distribution of light radiation on the photoelectric conversion chip and increasing the utilization rate and reliability of the photoelectric conversion chip.

Description

technical field [0001] The invention relates to the field of photoelectric technology, in particular to a solar cell. Background technique [0002] Concentrator Photovoltaic (CPV) refers to a technology that directly converts concentrated sunlight into electrical energy through solar cells with high conversion efficiency. CPV uses multi-junction III-V compound cells, which have the advantages of broad spectral absorption and high conversion efficiency. Moreover, the cell area required by CPV is not large, and the use of relatively cheap concentrating devices to replace expensive semiconductor materials can effectively reduce costs and reduce production energy consumption when applied to power generation on a large scale. It can be seen from the above that CPV is the solar power generation method with the greatest potential to develop into a large-scale supporting power source. [0003] However, traditional CPVs use Fresnel lenses and parabolic reflectors to collect light, ...

AI Technical Summary

Problems solved by technology

[0005] (1) The battery chip is usually cut into a square with a side length of 3 to 10 mm, and the mismatch between the circular light spot and the square chip will make the carrier distribution of the chip uneven, forming a hot spot effect, resulting in damage to the chip;

[0006] (2) The circular light spot cannot cover the entire area of ​​the square chip, resulting in waste of expensive chips;

[0007] (3) The area on the chip that cannot be covered by the circular light spot will have a high resistance area, which will hinder the output of the current generated by the chip, resulting in low current transmission efficiency, thereby reducing the performance of the chip

Images