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Texture battery silicon with microscopic smooth edges and its preparation method

A microscopic and smooth technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as exposed perovskite films

Active Publication Date: 2020-11-10
咸阳瞪羚谷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of texture cell silicon with microscopic smooth edges and corners and its preparation method, to solve the prior art when preparing perovskite / crystalline silicon laminated solar cells, due to the special texture structure of the pyramid texture Make the subsequent perovskite film prone to bare problems, prepare a uniform and fully covered perovskite film, and obtain high-efficiency perovskite / crystalline silicon stacked solar cells

Method used

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  • Texture battery silicon with microscopic smooth edges and its preparation method

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Embodiment 1

[0020] This embodiment provides a textured battery silicon with microscopic rounded edges and corners. The surface of the textured cell silicon is imitated pyramid textured surface, and the sharp corners and edges of the imitation pyramid are microscopically smooth. The nucleation of the perovskite solution presents a smooth shape rather than a step shape at a comparable microscopic scale, and the degree of smoothness is that the radius of curvature is 10-200nm.

[0021] A preparation method of textured cell silicon with microscopic smooth edges and corners, using a brush with a tip length of 2-10 μm unevenly distributed, using nano-zirconia polishing agent, and performing smoothing treatment along the direction of the diagonal line of the bottom face of the pyramid to obtain Texture cell silicon with microscopic rounded edges and corners with a radius of curvature of 10-200nm.

Embodiment 2

[0023] This embodiment provides a textured battery silicon with microscopic rounded edges and corners. The surface of the textured cell silicon is imitated pyramid textured surface, and the sharp corners and edges of the imitation pyramid are microscopically smooth. The nucleation of the perovskite solution presents a smooth shape rather than a step shape at a comparable microscopic scale, and the degree of smoothness is that the radius of curvature is 50-400nm.

[0024] A preparation method of textured battery silicon with microscopic smooth edges and corners, using a brush with a tip length of 2-10 μm unevenly distributed, using nano-zirconia polishing agent, and smoothing along the direction of 30° to the diagonal line of the pyramid bottom face Chemical treatment to obtain textured cell silicon with a radius of curvature of 50-400nm with microscopic rounded corners.

Embodiment 3

[0026] This embodiment provides a textured battery silicon with microscopic rounded edges and corners. The surface of the textured cell silicon is imitated pyramid textured surface, and the sharp corners and edges of the imitation pyramid are microscopically smooth. The nucleation of the perovskite solution presents a smooth shape rather than a step shape at a comparable microscopic scale, and the degree of smoothness is that the radius of curvature is 500-2000nm.

[0027] A preparation method of textured battery silicon with microscopic smooth edges and corners, using a brush with a tip length of 2-10 μm unevenly distributed, using nano-zirconia polishing agent, and smoothing along the direction of 30° to the diagonal line of the pyramid bottom face Chemical treatment to obtain textured cell silicon with a radius of curvature of 500-2000nm with microscopic rounded edges and corners.

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Abstract

The invention discloses textured cell silicon with microscopic smooth edges and corners, and a preparation method thereof. The surface of the textured cell silicon is a pyramid-like textured surface.The sharp corners and edges of the pyramid are microscopic smooth. The method is characterized by using a tip wedge-shaped brush to polish the upper surface of the textured cell silicon having a pyramid shape to obtain the textured cell silicon with microscopic smooth edges and corners, so as to solve an exposure phenomenon in the subsequent perovskite film deposition, realize the uniform and full-cover deposition of the perovskite film, and enhance the efficiency of a perovskite / crystalline silicon laminated solar cell.

Description

technical field [0001] The invention belongs to the field of perovskite / crystalline silicon stacked solar cells, and in particular relates to a method for preparing textured cell silicon with microscopic smooth edges and corners. Background technique [0002] Solar photovoltaic technology is an effective way of utilizing solar energy and an important measure to solve energy problems and environmental pollution and achieve sustainable development. Crystalline silicon solar cells have a wide absorption spectrum, which currently accounts for 90% of the photovoltaic market. OC ) is lower. Since the birth of perovskite solar cells in 2009, due to their good light absorption, photoelectric conversion characteristics and excellent photogenerated carrier transport characteristics, after just a few years of development, the efficiency has exceeded 23%. At the same time, perovskite solar cells can regulate the spectral absorption range of the cell by controlling the ratio of halogen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0236H01L31/18
CPCH01L31/02366H01L31/1804Y02E10/547Y02P70/50
Inventor 杨冠军刘研刘梅军李臻高黎黎李长久李成新
Owner 咸阳瞪羚谷新材料科技有限公司