Wedge-shaped brush with high hard particles for smoothing the sharp corners and edges of the silicone fleece

Abstract

The invention discloses a wedge-shaped hairbrush containing high-hard particles used for smoothing the sharp corners and edges of the silicon wool surface. The bristle head; the wedge-shaped bristle head with a number of abrasive particles attached to it; the length of the cylindrical body is L, and the diameter is d; the aspect ratio L / d<40. The present invention adopts the design that the length-to-diameter ratio of the bristles L / d<40, the length of the wedge-shaped bristle head is uneven, the included angle of the tip is less than 70° of the included angle of the suede surface, and the surface of the bristle head has a large amount of abrasive grains. The pyramid suede structure of the sheet is smoothed to solve the problem that the subsequent film cannot be completely covered, and to improve the photoelectric conversion efficiency of the perovskite / crystalline silicon stacked solar cell. Industrial production of efficient perovskite / crystalline silicon tandem solar cells.

Description

technical field [0001] The invention belongs to the field of perovskite / crystalline silicon stacked solar cells, in particular to a wedge-shaped brush containing high-hard particles used for smoothing the sharp corners and edges of silicon wool surfaces. Background technique [0002] Organic-inorganic hybrid perovskite solar cells have attracted extensive attention from academia and industry around the world in recent years because of their advantages such as ultra-high photoelectric conversion efficiency, simple and inexpensive preparation process and equipment, and low-temperature preparation by solution method. As of November 2018, the highest efficiency of certified single-junction perovskite solar cells has reached 23.4%. Higher photoelectric conversion efficiency is always one of the core goals in the development of photovoltaic cell technology. However, the photoelectric conversion efficiency of single-junction perovskite solar cells cannot exceed the theoretical eff...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wedge-shaped hairbrush containing high-hard particles used for smoothing the sharp corners and edges of the silicon textured surface. Complete coverage problem to improve photoelectric conversion efficiency of perovskite / crystalline silicon tandem solar cells

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