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Laser photovoltaic cell and manufacturing method thereof

A laser photovoltaic cell and photovoltaic cell technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems of PN junction leakage, conversion efficiency reduction, photovoltaic cell fill factor reduction, etc., to solve substrate leakage and improve performance Effect

Active Publication Date: 2013-05-29
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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Problems solved by technology

Since the resistance of the semi-insulating GaAs substrate becomes significantly smaller under the light, the parallel conductance of the photovoltaic cell increases significantly, that is, the leakage of the PN junction of the photovoltaic cell is serious, which makes the I-V curve deformed, and finally leads to the decrease of the fill factor of the photovoltaic cell and the sharp conversion efficiency. reduce

Method used

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  • Laser photovoltaic cell and manufacturing method thereof
  • Laser photovoltaic cell and manufacturing method thereof
  • Laser photovoltaic cell and manufacturing method thereof

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Embodiment Construction

[0038] Considering the many deficiencies in the existing technology, how to increase the parallel resistance, reduce the series resistance, increase the conversion efficiency of laser cells, and solve the corresponding production technology is of great significance.

[0039] In order to solve the above problems, we propose to use a three-layer structure of polyimide layer, dielectric film SiN layer and metal light-shielding layer Au for isolation to reduce the parallel conductance of the PN junction of the battery, thereby improving the conversion efficiency of photovoltaic cells.

[0040] Specifically, the embodiment of the present invention discloses a laser photovoltaic cell, including an isolation groove, which separates the photovoltaic cell into a plurality of battery cells, and the battery cells are connected in series, and the inner wall surface of the isolation groove A polyimide layer, a dielectric film layer and a metal light-shielding layer are sequentially formed o...

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Abstract

The invention discloses a laser photovoltaic cell which includes an isolation tank. The isolation tank is used for dividing the laser photovoltaic cell into a plurality of battery units. The battery units are connected in series. A polyimide layer, a dielectric film layer and a metal shading layer are formed in sequence on the surface of inwall of the isolation tank. The invention also discloses a manufacturing method thereof. According to the invention, electricity leakage problem due to semi-insulating substrate illumination is solved. The manufactured photovoltaic cell has the advantages of high parallel resistance, small electricity leakage and the high conversion efficiency.

Description

technical field [0001] The invention relates to a laser photovoltaic cell, in particular to a GaAs laser photovoltaic cell based on a novel isolation filling process and a manufacturing method thereof. Background technique [0002] The laser energy supply system is an innovative energy transfer system. With this system, the light emitted by the laser source is transmitted to the laser photovoltaic cell through the optical fiber, which can provide a stable power output. The conversion of light into electricity through optical fiber has more advantages than traditional metal wire and coaxial cable power transmission technology, and can be applied in radio communication, industry where electromagnetic interference needs to be eliminated or electronic devices need to be isolated from the surrounding environment. There are important applications in the directions of sensors, national defense, aviation, medicine, and energy. The working principle of laser photovoltaic cells is si...

Claims

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Application Information

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IPC IPC(8): H01L27/142H01L31/0352H01L31/0216H01L31/18H01L31/046
CPCY02E10/50Y02P70/50
Inventor 赵春雨董建荣于淑珍赵勇明李奎龙孙玉润曾徐路杨辉
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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