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Preparation of colorful solar cells

by:dcfpower     2021-03-23
With the increasing depletion of the earth's petroleum energy, people's awareness of environmental protection has increased, and the demand for clean energy has become increasingly strong. Solar cell is a photoelectric energy conversion device, which can convert light energy into electric energy without any pollutant emission during the conversion process. It is one of the most important clean energy sources. Compared with other clean energy sources, using the photovoltaic characteristics of semiconductors to convert solar energy has the advantage of not being restricted by region. As long as there is sunlight on the earth, solar cells can be used to convert the direct and diffuse energy of the sun. u003cpu003eu003c/pu003eu003cpu003e With the vigorous promotion of distributed solar power stations in urban and rural areas in my country. A single dark blue solar power station can no longer meet people's needs for beautifying the appearance of the power station. If distributed solar power stations can form patterns that people need through the combination of solar cells of different colors, it will definitely bring advertising and decoration effects to distributed power stations, and can greatly reduce the construction cost of power stations, and accelerate the promotion of distributed power stations. The purpose of energy saving and emission reduction. u003c/pu003eu003cpu003eu003cpu003e Through the research on the performance of different color batteries, this paper explores the relationship between battery preparation technology, battery color and battery performance, and provides a reference basis for the design of color solar power stations. The working principle of color solar cellsu003c/pu003eu003cpu003e Color solar cells use the reflection of light from different thicknesses of anti-reflection films to form different colors, and use the principle of light interference. As shown in Figure 1, because the wavelengths of light of different colors are different. When silicon nitride films of different thicknesses are deposited on solar cells, their reflection effects on light of different colors are different, so the cells show different colors. u003c/pu003eu003cpu003eu003cpu003e In this paper, the preparation process and battery performance of different color batteries are studied. The results show that when the deposition pressure is 1 800 mTorr, the refractive index of the battery reaches the ideal 2.1. The change of open circuit voltage of batteries of different colors is less than 0.04 V, and the change of short circuit current is greater than 0.5 mA. Therefore, the solar cell modules with decorative functions need to be designed in parallel to achieve the best module efficiency. u003c/pu003eu003cpu003eu003c/pu003eu003c/pu003eu003cpu003eu003c/pu003eu003c/pu003eu003c/pu003e
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