Polycrystalline silicon solar cell panel grid with high conversion efficiency
A technology of solar cells and polysilicon, applied in circuits, electrical components, semiconductor devices, etc., to achieve good elasticity and toughness, and high conversion efficiency
Inactive Publication Date: 2016-03-16
CHANGSHU WANLONG POWER TECH R&D CO LTD
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According to reports, the efficiency of cells fabricated on 50-60 micron polysilicon substrates exceeds 16%.
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[0010] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0011] see figure 1 , figure 1 It is a polycrystalline silicon solar battery grid with high conversion efficiency in the present invention, and the polycrystalline silicon solar battery grid with high conversion efficiency includes a polymer transparent material layer 1, an engineering plastic layer 2 and a metal mineral layer 3, and the polymer transparent material Layer 1 is polymethyl methacrylate, the engineering plastic layer 2 is polycarbonate fiber, and the metal mineral layer 3 is quartz sand.
[0012] It is further illustrated that the quartz sand includes silicon micropowder and silicon dioxide, the polymethyl methacrylate accounts for...
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The invention discloses a polycrystalline silicon solar cell panel grid with high conversion efficiency. The polycrystalline silicon solar cell panel grid with high conversion efficiency comprises a transparent high polymer material layer, an engineering plastic layer and a metallic mineral layer; the transparent high polymer material layer is made of polymethyl methacrylate; the engineering plastic layer is made of polycarbonate fiber; the metallic mineral layer is made of quartz sand; the polymethyl methacrylate accounts for 52%-67% by weight of the main body of the polycrystalline silicon solar cell panel grid with high conversion efficiency, the polycarbonate fiber accounts for 16%-25% by weight of the main body of the polycrystalline silicon solar cell panel grid with high conversion efficiency; and the quartz sand accounts for 16%-25% by weight of the main body of the polycrystalline silicon solar cell panel grid with high conversion efficiency. The polycrystalline silicon solar cell panel grid with high conversion efficiency provided by the invention has the characteristics of relatively good elasticity as well as toughness, high conversion efficiency and the like.
Description
technical field [0001] The invention relates to a polycrystalline silicon solar battery grid with high conversion efficiency. Background technique [0002] The center of gravity has developed from single crystal to polycrystalline, the main reasons are: [1] There are fewer and fewer head and tail materials available for solar cells; [2] For solar cells, square substrates are more cost-effective, through casting and The polysilicon obtained by the direct solidification method can directly obtain square materials; [3] The production process of polysilicon has been continuously progressing, and the fully automatic casting furnace can produce more than 200 kg of silicon ingots per production cycle (50 hours), and the size of the crystal grains can reach centimeters. [4] Due to the rapid research and development of monocrystalline silicon technology in the past ten years, the technology has also been applied to the production of polycrystalline silicon cells, such as selective et...
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IPC IPC(8): H01L31/0224
CPCH01L31/0224
Inventor 汪建中
Owner CHANGSHU WANLONG POWER TECH R&D CO LTD