Method for manufacturing silica-based high-efficiency double-junction solar battery

Abstract

The invention discloses a method for manufacturing a silica-based high-efficiency double-junction solar battery. The method comprises the following steps: firstly, growing a dense and uniform woolen sThe invention discloses a method for manufacturing a silica-based high-efficiency double-junction solar battery. The method comprises the following steps: firstly, growing a dense and uniform woolen sric field form a bottom electrode which forms ohmic contact after sintering; and finally, preparing a top layer electrode on the top layer of the battery by using a magnetic control sputtering device,ric field form a bottom electrode which forms ohmic contact after sintering; and finally, preparing a top layer electrode on the top layer of the battery by using a magnetic control sputtering device, and sputtering a metal electrode on the N type surface of the top layer CaAs battery to form the ohmic contact so as to obtain the high-efficiency double-junction solar battery.and sputtering a metal electrode on the N type surface of the top layer CaAs battery to form the ohmic contact so as to obtain the high-efficiency double-junction solar battery.urface on the surface of a monocrystalline silicon piece by adopting a chemical corrosion method under a magnetic field, then diffusing the woolen surface in a high-temperature diffusion furnace to fourface on the surface of a monocrystalline silicon piece by adopting a chemical corrosion method under a magnetic field, then diffusing the woolen surface in a high-temperature diffusion furnace to form PN junctions so as to form a bottom battery; and after corrosion, removing phosphorosilicate glass on the surface of the silicon piece by washing; secondly, epitaxially growing CaAs battery by usinrm PN junctions so as to form a bottom battery; and after corrosion, removing phosphorosilicate glass on the surface of the silicon piece by washing; secondly, epitaxially growing CaAs battery by using an MBE on an N type surface of the silicon piece of the prepared the PN junctions; thirdly, evaporating an anti-reflecting film on the surface of the prepared PN junction CaAs battery; fourthly, preg an MBE on an N type surface of the silicon piece of the prepared the PN junctions; thirdly, evaporating an anti-reflecting film on the surface of the prepared PN junction CaAs battery; fourthly, preparing and forming a back electrode and a back electric field on the silicon piece P type surface of a double-layer battery by using a screen printer, and the printed back electrode and the back electparing and forming a back electrode and a back electric field on the silicon piece P type surface of a double-layer battery by using a screen printer, and the printed back electrode and the back elect

Description

Technical field: [0001] The invention belongs to the field of solar cells in the technical field of inorganic materials, and relates to a method for manufacturing silicon-based high-efficiency double-junction solar cells. Background technique: [0002] Solar energy is a clean, non-polluting, inexhaustible natural energy source. Almost all natural resources on which human beings depend are converted to solar energy. Direct conversion of solar energy into electrical energy is an important technology for large-scale utilization of solar energy. Base. Since Bell Labs developed the first polysilicon solar cell with an efficiency of 6% in 1954, the solar cell market has been increasing at an annual rate of 35%. [0003] Due to the relatively high conversion efficiency and relatively low cost of traditional crystalline silicon cells, they have gradually become the leading products in the market. However, other types of thin-film batteries seem to be difficult to replace silicon-b...

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Problems solved by technology

The technology of preparing multi-junction solar cells through the magnetization effect of a magnetic field has not yet appeared

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