Solar crystalline silicon slices, battery pieces and solar power generation device
A technology of solar cells and crystalline silicon wafers, applied in crystal growth, photovoltaic power generation, circuits, etc., can solve the problems of expensive processing equipment, low equipment output capacity, low utilization rate, etc., to reduce the occurrence rate of TTV defects, The effect of increasing the yield rate of silicon wafers and reducing the thickness tolerance
Inactive Publication Date: 2013-04-03
赵钧永
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Problems solved by technology
[0007] Cutting silicon square ingots or silicon square rods into silicon wafers according to the existing technology, the processing cost is relatively high. The inventory of silicon raw materials and semi-finished products is high. On the other hand, due to expensive processing equipment, low utilization rate and low equipment output capacity
With the application of new technologies for silicon wafer cutting, such as diamond wire saw technology and high-speed cutting technology, the cutting speed has increased rapidly, and the cutting time for a single ingot of 156 silicon wafers has been shortened from about 9 hours to 4 to 6 hours, resulting in higher utilization rates. Further decrease
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[0022] The accompanying drawings illustrate an embodiment of a crystalline silicon wafer of the present invention. The silicon chip has a rectangular main body outline, and the side lengths are a and b respectively. c indicates the non-right angle corner outer edge line of the silicon wafer. It can be seen from the figure that the non-right angled corners can be regarded as formed by removing a small part of the right angles from the right angles of the rectangle, wherein c is much smaller than a or b. According to the present invention, the a / b value is between 1.1-4, preferably 1.3-2.5, more preferably 1.5-2. It is suitable for manufacturing solar cells. In the present invention, the size of b is generally 50-250 mm, preferably 100-200 mm, more preferably 120-160 mm, such as 125 mm, 156 mm and so on.
[0023] In a specific example of the above-mentioned embodiment of the crystalline silicon wafer according to the present invention, the side length a of the rectangular poly...
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The invention relates to solar battery pieces and crystalline silicon slices taking crystalline silicon, cast crystalline silicon or silicon alloy as main bodies, and also relates to a solar power generation device. Cast crystalline slices or certain non-cast crystalline silicon slices are generally used for manufacturing crystalline silicon solar battery pieces, and the crystalline silicon solar battery pieces are used for manufacturing the solar power generation device. The invention discloses cast and non-cast crystalline silicon slices with improved geometrical shapes, cast crystalline silicon solar battery pieces and the solar power generation device manufactured by using the cast crystalline silicon solar battery pieces, and compared with the conventional silicon slices, battery pieces and solar power generation devices, the cast and non-cast crystalline silicon slices, the cast crystalline silicon solar battery pieces and the solar power generation device are lower in manufacturing cost and higher in output capacity.
Description
technical field [0001] The present invention generally relates to a solar cell, a crystalline silicon chip and a solar power generation device mainly composed of crystalline silicon or cast crystalline silicon or a silicon alloy. Cast crystalline silicon wafers or some non-cast crystalline silicon wafers are usually used to make crystalline silicon solar cells, and crystalline silicon solar cells are used to make solar power generation devices, such as solar cells, or photovoltaic cells. The present invention proposes improved cast and non-cast crystalline silicon wafers, cast crystalline silicon solar cells and crystalline silicon solar power generating devices. Background technique [0002] Crystalline silicon (or silicon alloy) materials can be divided into cast crystals, Czochralski single crystals (rods) and zone melting crystals according to their manufacturing methods. Cast silicon crystals can be divided into crucible cast silicon crystals and crucible-less cast (su...
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Login to View More IPC IPC(8): H01L31/0352H01L31/18C30B29/06H01L31/042H02S40/00
CPCY02E10/50Y02P70/50
Inventor 赵钧永
Owner 赵钧永