Sand-blasting-free diffusion nickel plating technology of rectification monocrystalline silicon wafer

Abstract

Provided in the invention is a sand-blasting-free diffusion nickel plating technology of a rectification monocrystalline silicon wafer. According to the invention, the oxidation technology, the electrolysis technology, and the ultra sand coarsening technology technology are used for replacing the traditional sand blasting technology. The provided technology has advantages of energy conservation and power consumption reduction, good noise-free and dust-free properties, low production cost, and high product quality and the like and thus is the preferred one for technical transformation of the ectification monocrystalline silicon wafer diffusion nickel plating enterprise.

Description

technical field [0001] The sandblasting-free diffusion nickel plating process technology for rectifying single crystal silicon wafers belongs to the "Catalogue of High-tech Fields Key Supported by the State", the key technology field of green manufacturing and pollution reduction in the electronics industry. Background technique [0002] Rectifier diodes and bridge rectifiers are the basic components of the electronics industry, and the annual demand in the Chinese market is tens of billions. The raw material for manufacturing this kind of product is single crystal silicon wafer. A PN junction is formed in the single crystal silicon wafer by diffusion process. The silicon wafer is cut into the required area and shape, and then processed in the subsequent process. It is possible to manufacture rectifier components of various specifications. [0003] At present, the main process flow of the rectifying single crystal silicon wafer manufacturing process in China is as follows:...

AI Technical Summary

Problems solved by technology

[0005] In addition to the huge energy consumption and the fragments and stress caused by the mechanical impact of the monocrystalline silicon wafer, the vibration and noise of the air compressor after starting are huge, and are affected by it within a distance of 1 kilometer; the sand and dust ejected by the sandblasting machine Although it has been recovered, the dust in the surrounding air is still seriously exceeding the standard, especially the dust particles below PM10 cannot be filtered out by existing physical dust removal equipment, which seriously pollutes the environment and threatens the health of operators

Images