Efficient solar cell structure based on III-V group semiconductors

Abstract

The invention discloses an efficient solar cell structure based on an III-V group semiconductor, and belongs to the technical field of solar cells. The structure can assist a light absorption layer inimproving the light absorption efficiency and autonomously perceive the sun irradiation angle through a mode of arranging a plurality of light guide rods on the light absorption layer. Temperature changes caused by different sunlight irradiation are utilized to control the light guide rod to incline towards the high-temperature direction, automatic light following of the light guide rods is achieved, the light guide rods approximately keep perpendicular incidence with sunlight in real time to improve the light absorption effect, and redundant solar energy in the daytime can be absorbed and stored through a pre-buried light storage bag. At night, through cooperation of a powder control film and a shading powder, covering and shading are conducted in the direction facing the outside, and the light emitting direction of the light storage bag is forcibly guided to the angle facing the III-V group polycrystalline semiconductor layer, so the utilization rate of light energy is increased, and the photoelectric conversion efficiency is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a high-efficiency solar cell structure based on Group III-V semiconductors. Background technique [0002] From the 20th century to the 21st century, with the progress of people's life, the demand for energy is getting higher and higher. However, due to the limited resources available on the earth, in order to avoid the exhaustion of resources, the solar energy industry came into being. Solar energy is a kind of A green and sustainable energy, the development of solar cells can store light energy and make use of it. A solar cell is a semiconductor that absorbs light or photons, and electrons are excited and transition, and the excited electrons drive the circuit to form a battery semiconductor. Various solar cell materials currently used include semiconductor types such as monocrystalline silicon, polycrystalline silicon, and amorphous silicon, or materials linked by elements...

AI Technical Summary

Problems solved by technology

[0004] Although III-V solar cells do not need to use silicon crystals, the cost of the chip is still relatively high, and the current solar cells do not have corresponding protection measures, so that their lifespan is still not long, and because the irradiation angle of sunlight changes in real time Therefore, the light absorption efficiency decreases with the change of the illumination angle, and at the same time, it is impossible to collect the excess solar energy during the day, which makes it difficult to improve the photoelectric conversion rate of III-V solar cells.

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