Colorful solar cell and preparation method thereof

Abstract

The invention discloses a colorful solar cell and a preparation method thereof. The battery is an ordered silicon nanowire array with a PN junction formed on the surface on a silicon substrate, wherein the diameter of the silicon nanowire is 50-120nm, the period is 500-1500nm, and the surface is covered with a dielectric layer with a thickness of 1-200nm; method In order to make an ordered mask on the surface of the silicon substrate using the nanosphere template method or electron beam exposure method or nanoimprint technology, the ordered nanometers are etched on it using a wet process or a Bosch process of reactive ion etching. line array, and then use the diffusion process to do the boron element on the surface of the silicon substrate with the ordered silicon nanowire array on it, and then, the obtained ordered silicon nanowire array with the PN junction formed on the surface After the dielectric layer is made by chemical vapor deposition method, electron beam evaporation method, atomic layer deposition technology or spin coating method on the silicon substrate, electrodes are made on it to obtain the target product. It can be easily and widely commercially applied to photovoltaic power generation systems in cities.

Description

technical field [0001] The invention relates to a solar cell and a preparation method thereof, in particular to a colorful solar cell and a preparation method thereof. Background technique [0002] In recent years, with the continuous development of the photovoltaic industry, the market has put forward higher requirements for photovoltaic products. Integrating photovoltaic products on building roofs, exterior wall roofs, curtain walls, etc., so as to integrate them with buildings is the main direction of the development of the photovoltaic industry. Since the combination of photovoltaic arrays and buildings does not occupy additional ground space, it is the best installation method for photovoltaic power generation systems to be widely used in cities, and thus has attracted much attention. At present, since the photovoltaic modules are generally blue or black, when these photovoltaic modules are used to integrate with buildings, the color is relatively monotonous, and it is...

AI Technical Summary

Problems solved by technology

Although this product can be used as a colored solar cell, it has shortcomings with its preparation method. First, the price of fluoride and yttrium oxide in the product is on the high side, which makes it difficult to reduce the manufacturing cost of the product and restricts its commercial use. application; secondly, the preparation method can not reduce the cost of manufacturing

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