Method for preparing high efficiency solar cell with stereostructure
A solar cell and three-dimensional structure technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as low conversion efficiency, high price, and limited capacity, and achieve high conversion efficiency, large short-circuit current, and improved efficiency.
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[0043] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail in conjunction with specific embodiments and with reference to the accompanying drawings.
[0044] Such as figure 1 As shown, figure 1 This is a flowchart of a method for preparing a three-dimensional structure high-efficiency solar cell provided by the present invention. The method includes the following steps:
[0045] Step 1: Thermally oxidize the crystalline silicon cell to form SiO on the surface 2 film;
[0046] Step 2: To cover SiO 2 The thin-film crystalline silicon cells are laser-grooved, and the crystalline silicon cells are cut into a structure perpendicular to the surface and connected to each other in a "tower-like" structure;
[0047] Step 3: Use an alkaline solution to remove the damage on the surface of the crystalline silicon cell;
[0048] Step 4: Use an acidic solution to neutralize the excess al...
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