A kind of preparation method of four-junction solar cell based on gainnas material

A technology of solar cells and junction cells, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of crystal quality degradation, failure to obtain defective GaInNAs crystal layers, etc., to enhance lattice stability and reduce substrate transfer process , the effect of high crystal quality
CN105405928BActive Publication Date: 2017-05-03CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
Publication Date
2017-05-03

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Abstract

The invention discloses a preparation method for a four-junction solar cell based on a GaInNAs material, comprising the steps of treating a substrate, growing by MOCVD and adding a superlattice buffer layer. Compared with the existing four-junction solar cell preparation method, the preparation method provided by the invention adopts the superlattice buffer layer, the high-quality GaInNAs material can be prepared in the MOCVD, and thereby the prepared four-junction solar cell is high in crystalline quality, thus achieving higher overall efficiency. In addition, compared with the MBE method, the MOCVD method has a lower cost, and can lay a foundation for the industrial production of the four-junction cells.
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Description

technical field

[0001] The invention relates to the field of multi-junction laminated high-efficiency solar cells, in particular to a preparation method of a GaInNAs material-based four-junction solar cell. Background technique

[0002] With the rapid development of the solar photovoltaic power generation industry and market, and driven by the demand for space vehicle energy systems, photovoltaic technology has continuously made important breakthroughs. The production technology of high-efficiency solar cells based on III-V semiconductor compounds is becoming more and more mature, making them have broad application prospects in space engineering and terrestrial photovoltaics. The frequency range of the solar spectrum is very wide, and the solar cell absorbing layer will absorb photons with energy greater than the bandwidth of the absorbing layer material, convert them into photogenerated carriers, and generate voltage. For a material with a higher bandwidth, due to the smal...

Claims

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