Light convergence device, manufacturing method thereof and solar battery system

Abstract

A light concentrating device, its manufacturing method and solar cell system. The light condensing device (10) includes a light condensing substrate (100), and the light condensing substrate (100) has a rotating parabolic concave surface (101). A photonic crystal layer (300) is formed on the rotating parabolic concave surface (101). The photonic crystal layer (300) reflects light of a specific frequency and total reflection of all visible light, thereby greatly increasing the photoelectric conversion efficiency of the solar cell system. An up-conversion layer (200) is formed on the photonic crystal layer (300). The up-conversion layer (200) includes an up-conversion material with an up-conversion function for the spectrum, which improves the absorption rate of solar energy by the light concentrating device (10).

Description

technical field [0001] The invention belongs to the technical field of light energy, and in particular relates to a light concentrating device, a manufacturing method thereof and a solar cell system. Background technique [0002] Since the beginning of the 21st century, global energy issues and the ensuing environmental pollution and climate warming have become increasingly prominent and gradually intensified. Solar energy is considered to be one of the most promising renewable energy sources due to its outstanding advantages such as widespread and vast distribution, large amount of resources, no pollution, cleanliness, safety, and easy access. [0003] In recent years, the use of solar energy has been widely used in energy technologies such as solar cells, which directly convert sunlight energy into electrical energy, which is a feasible and effective method for utilizing solar energy. Solar cells have experienced nearly half a century of development, and their photoelectr...

AI Technical Summary

Problems solved by technology

The reflection band of the metal film is relatively wide, and it can reflect light waves in a specific band of incidence at various angles, but the reflectivity is relatively low, and the energy loss of light waves is large

The dielectric film layer can only reflect light waves incident at a specific angle, and the reflection band of the film layer is relatively narrow.

In addition, when the sunlight is concentrated on the surface of the solar cell by the concentrating device, the energy of some wavelengths of light such as infrared light will be converted into heat, which will increase the temperature of the solar cell and make it unable to work at the optimum temperature, resulting in drop in conversion efficiency

[0005] In addition, at present, the absorption wavelength of most solar cells can only cover the visible light region, and the use of other wavelength bands such as infrared light is seldom used, which will also lead to low photoelectric conversion efficiency of solar cells.

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