Method for manufacturing solar cell with nano-structural film

Abstract

The invention relates to a method for manufacturing a solar cell with a nanostructural film, including steps of treating a glass substrate with UV ozone, uniformly coating a polystyrene nanospherical layer containing plural nanospheres on the surface of the glass substrate and curing the polystyrene nanospherical layer for adhesion onto the glass substrate, forming a first optical layer on the surface of the polystyrene nanospherical layer, curing and releasing the first optical layer from the polystyrene nanospherical layer to obtain a concave spherical nanostructured film, and finally affixing the concave spherical nanostructured film on the surface of a solar cell to manufacture a solar cell with nanostructure after curing by baking.

Description

BACKGROUND OF THE INVENTION[0001]1. Fields of the Invention[0002]The present invention relates to a method for manufacturing a solar cell with a nanostructural film especially by means of an optical layer. The method of the present invention can be repeatedly done in a general environment without special and expensive equipment or devices. The nanostructural film can be directly affixed on the surface of the solar cell so that the solar cell generates the light concentration effect to increase routes through which the light inside the solar cell travel, effectively reduce the light reflectivity and enhance the photoelectric conversion efficiency thereof.[0003]2. Descriptions of Related Art[0004]The sun is the source of life, and human being cannot live without the sun. Although there are no immediately exhausted crises for the fossil fuels, e.g. oil or coal, on which the life around the world rely, the carbon dioxide emission from the excessive use of the fossil fuel has already cau...

AI Technical Summary

Benefits of technology

The present invention provides a method for manufacturing a solar cell with a nanostructural film that can enhance its photoelectric conversion efficiency and reduce light reflection. The method can be repeatedly done in a general environment without special equipment, making it a cost-effective solution for manufacturing solar cells. The nanostructural film can be directly affixed on the surface of the solar cell, increasing the routes through which light travels inside the solar cell, reducing reflectivity and enhancing the photoelectric conversion efficiency. Additionally, the invention uses materials that are commonly available and can be used for other applications, further reducing costs. The use of concave or convex spherical nanostructures or other films with various spherical designs enhances the efficiency of solar cells.

Problems solved by technology

Although there are no immediately exhausted crises for the fossil fuels, e.g. oil or coal, on which the life around the world rely, the carbon dioxide emission from the excessive use of the fossil fuel has already caused the serious greenhouse effect to become the culprit in the earth's warming temperatures.

Furthermore, since the price of crude oil continued to rise in recent years and nuclear power plant safety concern, looking for alternative energy sources has become imperative.

However, currently the biggest problem of the solar cell is that its luminous efficiency cannot continuously be improved.

This factor not only causes an unideal photoelectric conversion efficiency of the solar cell but also increases power generation cost to obstruct the application and development of the solar cell in daily life.

Films with an adequate refractive index are lacking for use in the traditional manufacturing processes.

All the aforesaid are the main disadvantages for the traditional processes for making solar cells.

Applications of anti-reflection films on the solar cell are thus substantially restricted due to such traditional processes for making solar cells.

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