Silicon nano line/non crystal heterogeneous agglomeration solar battery

Abstract

The invention discloses a solar battery device of a silicon nanowire array, which pertains to the technical field of solar batteries and is characterized in that a p-type silicon nanowire/an n-type three-dimensional amorphous silicon heterogenous junction layer is contained between a transparent indium tin oxide conductive film and a P-type silicon base layer. A solar conversion device comprises layers that are overlapped in sequence, namely, a Ti/Pd/Ag gridiron electrode serving as a frontal extraction electrode, a transparent ITO conductive film layer playing a role in transparence and serving as a frontal extraction electrode, an n-type amorphous silicon which is positioned above the p-type silicon nanowire forms a p-n heterogenous junction together with the P-type silicon nanowire; the P-type silicon nanowire is positioned above the P-type silicon base layer and forms the three-dimensional heterogenous junction together with the n-type amorphous silicon as well as serves as an antireflection layer of the solar battery, the P-type silicon base layer serves as a base area of the solar battery, the back electrode of an aluminum metal film serves as a back extraction electrode. The solar conversion device with the novel structure provided by the invention has strong capacity of light absorption and high photoelectric conversion efficiency.

Description

technical field [0001] The invention relates to a silicon nanowire solar battery device, which belongs to the technical field of solar energy. Background technique [0002] Facing the global energy shortage crisis and the continuous deterioration of the ecological environment, countries around the world are actively researching, developing and utilizing renewable energy, so as to realize the sustainable development of the energy industry and society. Among them, solar energy has become the focus of renewable energy due to its unique advantages. If 0.1% of the solar energy on the earth's surface is converted into electrical energy, the conversion rate is 5%, and the annual power generation can reach 5.6×10 12 A kilowatt-hour is equivalent to 40 times the current energy consumption in the world. Therefore, solar energy is considered to be the best solution to the energy crisis and the deterioration of the ecological environment. Experts at home and abroad predict that by 21...

AI Technical Summary

Problems solved by technology

However, due to the instability of its internal structure and the existence of a large number of hydrogen atoms, amorphous silicon has light fatigue effect (Staebler-Wronski effect), so there are problems in the stability of amorphous silicon solar cells after long-term work, and its photoelectric conversion efficiency will decrease with Attenuation with the continuation of light time

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