Method for surface regulation of silicon material for solar cells

Abstract

The invention discloses a method for the surface regulation of a silicon material for solar cells. In the method, photoetching and mask film technology and alkaline wet-method corrosion technology are combined, a layer of mask film is deposited on the surface of silicon before the alkaline wet-method corrosion of the surface of the silicon, and the film layer on the surface of the silicon is patterned by a mask film pattern to make the corrosion of the surface of the silicon selectable and controllable. While performing the alkaline wet-method corrosion of the surface of the silicon to increase the light absorption area of the surface of the silicon, the method ensures the uniformity and regularity of the surface of the silicon. The method has the advantages of controllable operation, simplicity, easy implementation, high repeatability and easy large-scale production application.

Description

technical field

[0001] The invention relates to the technical field of solar cells, in particular to a method for regularizing the surface of silicon materials used in solar cells. Background technique

[0002] Solar cells are optoelectronic semiconductor devices that convert light energy into electrical energy. With the success of solar cells in the "Pioneer 1", more and more satellites use solar cells as the main power source. At the same time, solar cells are on the ground The applications on the Internet are also more and more widely, such as lighting, radio relay, television relay and power supply of buildings and so on. According to different materials, solar cells can be divided into silicon solar cells and compound solar cells, among which silicon solar cells are the most widely used. In order to reduce the reflection loss of reflected light on the surface of the silicon cell, the principle of corrosion is used to make the illuminated surface of the silicon solar ce...

Images