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Laser photovoltaic cell and production method thereof

A technology of laser photovoltaic cells and photovoltaic cells, 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: 2013-05-22
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 production method thereof
  • Laser photovoltaic cell and production method thereof
  • Laser photovoltaic cell and production method thereof

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Embodiment Construction

[0038] Taking into account the many shortcomings in the prior art, how to increase the parallel resistance, reduce the series resistance, increase the conversion efficiency of the laser battery, 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 battery PN junction, 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 that separates the photovoltaic cell into a plurality of battery cells, 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 thereon.

[0041...

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Abstract

The invention discloses a laser photovoltaic cell which comprises an isolation groove. The isolation groove divides the photovoltaic cell into a plurality of cell units which are in series connection, and a polyimide layer, a dielectric film layer and a metal shading layer are sequentially formed on the surface of the inner wall of the isolation groove. The invention further discloses a production method of the laser photovoltaic cell. By the laser photovoltaic cell and the production method thereof, the problem of electric leakage due to the fact that a semi-insulating substrate exposes to light is effectively solved. Besides, the produced photovoltaic cell has the advantages of high parallel resistance, small electric leakage and 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 delivery system. With this system, the light emitted by the laser light source is transported to the laser photovoltaic cell through an optical fiber, which can provide a stable power output. Transforming light into electricity through optical fiber has more advantages than traditional metal wire and coaxial cable power transmission technology. It can be used in situations where electromagnetic interference needs to be eliminated or electronic devices need to be isolated from the surrounding environment. Sensors, national defense, aviation, medicine, energy and other directions have important applications. The working principle of laser photovoltaic cells is similar to that of solar cells, except ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/142H01L31/0216H01L31/02H01L31/0693H01L31/18H01L31/046
CPCY02E10/50Y02E10/544Y02P70/50
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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