Multi-junction solar cell and power supply equipment

A technology of solar cells and sub-cells, applied in the field of solar cells, can solve the problem that the performance of multi-junction solar cells needs to be improved, and achieve the effects of reducing absorption, improving performance and improving collection efficiency

Inactive Publication Date: 2020-07-17
YANGZHOU CHANGELIGHT
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  • Application Information

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Problems solved by technology

III-V compound semiconductor solar cells have the highest conversion efficiency in the current material system, and have the advantages of good high temperature resistance and strong radiation resistance. / Ge lattice-matched triple-junction solar cells have been widely used in the aerospace field, but the performance of existing multi-junction solar cells needs to be improved

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  • Multi-junction solar cell and power supply equipment
  • Multi-junction solar cell and power supply equipment
  • Multi-junction solar cell and power supply equipment

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] As mentioned in the background, solar cells can directly convert solar energy into electrical energy, which is the most efficient form of clean energy. III-V compound semiconductor solar cells have the highest conversion efficiency in the current material system, and have the advantages of good high temperature resistance and strong radiation resistance. They are recognized as a new generation of high-performance and long-life space main power supplies. ...

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Abstract

The invention provides a multi-junction solar cell and power supply equipment. In at least one sub-cell, the average lattice constant of a sub-cell window layer is greater than a first lattice constant, and the mismatch degree of the average lattice constant of the sub-cell window layer and the first lattice constant is less than 1%. Therefore, the sub-cell window layer is made of a material whichis in lattice mismatch with the active region of the sub-cell so that the band gap of the sub-cell window layer is increased, sunlight absorption of the sub-cell window layer is reduced, a high potential barrier is formed, a reflection effect on minority carriers flowing to the sub-cell window layer is achieved, the collection efficiency of photon-generated carriers is finally improved and the performance of the multi-junction solar cell is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, and more specifically, to a multi-junction solar cell and power supply equipment. Background technique [0002] Solar cells convert solar energy directly into electricity and are the most efficient form of clean energy. III-V compound semiconductor solar cells have the highest conversion efficiency in the current material system, and have the advantages of good high temperature resistance and strong radiation resistance. They are recognized as a new generation of high-performance and long-life space main power supplies. Triple-junction solar cells with / Ge lattice-matched structure have been widely used in the aerospace field, but the performance of existing multi-junction solar cells still needs to be improved. Contents of the invention [0003] In view of this, the present invention provides a multi-junction solar cell and power supply equipment, which effectively solves the technical pr...

Claims

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Application Information

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IPC IPC(8): H01L31/0725H01L31/0687H01L31/054
CPCH01L31/0725H01L31/0687H01L31/054Y02E10/544Y02E10/52
Inventor 吴真龙李俊承张策朱鸿根郭文辉
Owner YANGZHOU CHANGELIGHT
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