Heterojunction solar battery with interface delta doping

A solar cell and heterojunction technology, applied in the field of solar cells, can solve the problems of reducing the performance of the cell, hindering the transport of minority carriers in the cell, hindering the transport of electrons, etc., to enhance transport, improve the transport limitation process, Choose effects with greater flexibility
CN103594540AActive Publication Date: 2014-02-19SHANGHAI INST OF SPACE POWER SOURCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF SPACE POWER SOURCES
Publication Date
2014-02-19

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Abstract

The invention discloses a heterojunction solar battery with interface delta doping. An emitter region of the solar battery adopts n-type GaInP, the thickness of the n-type GaInP is 40-100nm, a window layer is n-type AlInP or AlGaInP, the thickness of the window layer is 10-50nm, delta doping is adopted, and the density of the doping face is 1011-1013cm-2. Delta doping is carried out on the window layer around an interface of the AlInP layer or AlGaInP window layer and the GaInP emitter region. According to the heterojunction solar battery with interface delta doping, delta doping is carried out on the window layer at the interface of the window layer and the emitter region to improve transportation of carriers in the solar battery.
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Description

technical field

[0001] The invention relates to a solar cell, in particular to a heterojunction solar cell containing interface delta doping. Background technique

[0002] Solar cells can directly convert solar energy into electrical energy, which can greatly reduce people's dependence on coal, oil and natural gas in production and life, and become one of the most effective ways to use green energy. The conversion efficiency of III-V semiconductor solar cells is the highest in the current material system. At the same time, it has the advantages of good high temperature resistance, strong radiation resistance, and good temperature characteristics. It is recognized as a new generation of high-performance and long-life space mainframes. Power supply has been widely used in aerospace field. With the continuous improvement of compound semiconductor growth technology (such as MOCVD), the efficiency of III-V solar cells has been greatly improved, and the efficiency of triple-junct...

Claims

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