A kind of back contact crystalline silicon solar cell and its manufacturing method
A technology for solar cells and crystalline silicon, which is applied in the manufacturing of final products, sustainable manufacturing/processing, circuits, etc. It can solve problems such as complex opening process, and achieve the effect of simplifying the process flow, saving production costs, and reducing interface recombination.
Active Publication Date: 2016-11-23
紫石能源有限公司
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Problems solved by technology
[0004] In view of this, in order to solve the problem of complex opening process in the process of making batteries in the prior art, one of the purposes of the present invention is to provide a back contact crystalline silicon solar cell with no holes in the passivation layer of the non-light-receiving surface
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[0029] A back-contact crystalline silicon solar cell and a method for making the cell are further described and illustrated below in conjunction with the accompanying drawings. The examples given are only for explaining the present invention, and are not intended to limit the scope of the present invention.
[0030] In an embodiment, as shown in FIGS. 1 to 5 , FIG. 1 is a schematic diagram of a silicon substrate, and the silicon substrate 1 has a non-light-receiving surface 101 of the silicon substrate. In order to eliminate the shading loss of the electrode lines and maximize the use of solar energy, as shown in FIG. 2 , alternately arranged P-type regions 201 and N-type regions 202 are arranged on the non-light-receiving surface 101 of the silicon substrate. On the opposite sides of the alternating regions of the P-type region 201 and the N-type region 202, two edge strips are arranged perpendicular to the extending direction of the P-type region 201 and the N-type region 202...
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A back-contact crystalline silicon solar cell comprises a silicon substrate. The silicon substrate has a silicon substrate non-illuminated face, on which alternately-arranged P-type areas and N-type areas are mounted. As for two opposite sides of the alternate area of the P-type areas and the N-type areas, one side is provided with a P-type area edge strip, and the other side is equipped with an N-type area edge strip. The P-type edge strip is vertical to the extension direction of the P-type areas and the N-type areas. The N-type edge strip is vertical to the extension direction of the P-type areas and the N-type areas. The P-type area edge strip is connected with transverse planes of the P-type areas. The N-type area edge strip is connected with transverse planes of the N-type areas. The P-type areas and the P-type area edge strip are provided with a P-type area convergence conductive band. The N-type areas and the N-type area edge strip are provided with an N-type area convergence conductive band. In addition, the invention also includes a method for manufacturing the solar cell.
Description
technical field [0001] The invention relates to the technical field of crystalline silicon solar cells, in particular to a back-contact crystalline silicon solar cell and a manufacturing method thereof. Background technique [0002] Among the existing sustainable energy sources, solar energy has many advantages such as cleanness, safe use, inexhaustibility, low utilization cost, and no geographical restrictions. It is one of the ideal energy sources to solve energy and environmental problems, and has broad development prospects. . In recent years, many studies on crystalline silicon solar cells have been conducted. Back-contact crystalline silicon solar cells, because the electrodes are designed on the non-light-receiving surface of the cell to eliminate the shading loss of the electrode lines, can maximize the use of solar energy and improve photoelectric conversion efficiency. A back-contact crystalline silicon solar cell is disclosed in the prior art, comprising a cryst...
Claims
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IPC IPC(8): H01L31/0216H01L31/068H01L31/18
CPCH01L31/02167H01L31/022441H01L31/0682H01L31/1804H01L31/1868Y02E10/547Y02P70/50
Inventor 李鸿儒兰立广童翔
Owner 紫石能源有限公司