Preparation method of high-purity zinc phosphide

Abstract

The invention discloses a preparation method of high-purity zinc phosphide, comprising the following steps: 1) quartz tube pretreatment, 2) batching, 3) tube sealing, 4) high-temperature synthesis, 5) product treatment, the invention uses high-purity phosphorus and high-purity Zinc direct conversion and production of high-purity zinc phosphide, the main reaction process occurs after the temperature reaches the melting point of zinc, actually belongs to the reaction between steam, belongs to the direct synthesis of elements, the requirements for the form of raw materials are not very strict, and the raw materials have not been processed , to meet the requirements of high purity, the present invention controls the internal pressure of the tube through temperature control operations such as slow temperature rise, constant temperature, and slow temperature drop, and distributes the length of the heating area and condensation area of ​​the synthetic quartz tube to successfully control the phosphorus vapor pressure in the quartz tube to achieve a large amount of The safe synthesis of zinc phosphide; through the control of the length of the condensation area and the heating area, a higher yield of the product is achieved. The product is used in the application fields of optoelectronic device production, diffusion source, and nanomaterials.

Description

Technical field

[0001] The present invention involves a preparation method for high -purity zinc. Background technique

[0002] High -purity zinc is a type of II -V semiconductor material with a prohibited bandwidth of 1.5EV.In recent years, zinc phosphate materials are attracting high attention. At the same time, compound semiconductors such as gallium arsenide and phosphate are indispensable semiconductor materials in the field of modern wireless communication and optical communication.In the process of phosphate and other devices, high -purity zinc phosphate is often used as the diffusion source.Zinc phosphate is one of the semiconductor materials that are currently actively engaged in application research, including application research on solar cells and single -dimensional nano -devices. Therefore, with the continuous expansion of its application field, the demand for zinc phosphate materials will also beIt will increase in large quantities and optimistic development prospe...

Images