Solar cell mask for spin coating process

Abstract

The invention provides a solar cell mask for a spin coating process. The solar cell mask includes a frame skeleton and an electrode layout thin plate fixed to the frame skeleton. Multiple grids are arranged on the frame skeleton, and each grid has four edges. Multiple grids are also arranged on the electrode layout thin plate. The grids of the electrode layout thin plate are arranged to correspondto the grids of the frame skeleton. Each grin of the electrode layout thin plate is provided with a coating area. Each coating area is composed of multiple annular structures and rectangular structures. The solar cell mask of the invention adopts the coating areas of the multiple annular structures and rectangular structures so as to select specific areas with the same cell structure distribution, and so the optimal area of cell efficiency can be determined, thereby studying specific structural characteristics of the area and adjusting process parameters. Moreover, the uniformity of process preparation can be judged through the cell areas of multiple strip ring-shaped structures.

Description

technical field [0001] The invention belongs to the technical field of mask plates, in particular to a mask plate used for preparing solar cells by a spin-coating process. Background technique [0002] As a new type of solar cell in the photovoltaic industry, perovskite solar cells are developing very rapidly. At present, many universities in China have related research topics, such as high efficiency, stability, and large area. Since the discovery of perovskite solar cells in 2009, their photoelectric conversion efficiency has increased from 3.8% to more than 22% today. Or exceed the traditional crystalline silicon, copper indium gallium selenide and cadmium telluride batteries on the market. Another advantage of perovskite solar cells is that the production process is greatly shortened and simplified compared with traditional crystalline silicon cells, and the production cost is also greatly reduced. Perovskite solar cells are usually composed of multiple layers of mater...

AI Technical Summary

Problems solved by technology

In the prior art, such as Image 6 As shown, using a rectangular pattern mask to prepare electrode cells is not conducive to distinguishing the battery efficiency corresponding to different battery thickness regions, and the electrical difference caused by this thickness difference cannot be reflected in the final test of battery efficiency; Figure 7 As shown, the grid size of the mask plate matches the size of the substrate. The substrate may be stuck in the grid when it is put in and taken out, which is not convenient for the adjustment and movement of the glass substrate.

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