Photovoltaic cell photoelectric conversion efficiency integrated improvement method

Abstract

The invention relates to a photovoltaic cell photoelectric conversion efficiency integrated improvement method, and aims at solving the problem of low photoelectric conversion efficiency in the prior art. Protective glass is compounded on the surface of a photocell. The upper surface of the protective glass having upper conversion and lower conversion luminescent material is treated into the micro polygonal pyramid array structure surface by using the micro-machining technology. As for surface treatment, certain voltage is applied between a tool electrode and a protective glass electrode immersed in insulating liquid by using discharge or spark erosion of the micro-machining technology, and the electrodes are enabled to be close to each other to discharge to lead to electrocorrosion evaporation of the electrode and the glass, and the surface is treated into the micro polygonal pyramid array structure surface. The array structure surface is the rectangular pyramid micro-pyramid array structure surface or the triangular pyramid micro-pyramid array structure surface. The method has the advantages that photoelectric conversion efficiency improvement of solar spectrum full spectrum energy and long-time maintenance of the conversion efficiency can be realized and finally improvement of the photocell photoelectric conversion efficiency can be realized.

Description

technical field [0001] The invention designs a method for improving the conversion efficiency of solar energy, and in particular relates to a method for comprehensively improving the photoelectric conversion efficiency of a photovoltaic cell. Background technique [0002] At present, the conversion efficiency of solar cells is affected by many factors, and only a small amount of light is converted into electricity. The main reason is that sunlight contains a variety of different wavelengths of light. The energy band width of poly (single) crystal silicon is 1.1eV, and the spectral response range is from ultraviolet to about 1100nm. Poly(single) silicon solar cells can perform photoelectric conversion in the wavelength range of 400-800nm. Therefore, only 42% of the sun's full-spectrum energy can be converted into electrical energy, and 52% of the energy in the infrared band and 6% of the energy in the ultraviolet band cannot be utilized. Moreover, 52% of the infrared light ...

AI Technical Summary

Problems solved by technology

Derived from the above principles, cheap organic fluorescent dyes were first applied to solar photovoltaic devices, but they have obvious disadvantages: outdoor use has light-induced attenuation, which leads to unstable performance of solar photovoltaic devices

In this patent, there are three key technologies that cannot be solved

First: Only infrared light is used, ultraviolet light is not used, and the energy of the solar spectrum is not fully utilized; Second: The problem of sunlight reflection is not considered, resulting in the loss of light energy; Third: Optimal doping of conversion luminescent materials Concentration, consideration is not specific, resulting in low conversion efficiency

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