Preparation method of high-purity zinc phosphide

Abstract

The invention discloses a preparation method of high-purity zinc phosphide, which comprises the following steps of: 1) quartz tube pretreatment; 2) dosing; 3) tube sealing; 4) high-temperature synthesis; and 5) product treatment. According to the invention, high-purity phosphorus and high-purity zinc are directly combined to produce high-purity zinc phosphide, the main reaction process is carried out after the temperature reaches the melting point of zinc, the reaction is actually a steam reaction, and the method is an element direct synthesis method; the requirements for the form of raw materials are not very strict; the raw material is not processed, and the requirement for high purity is met; the pressure in a tube is controlled through temperature control operations such as slow heating, constant temperature, slow cooling and the like; the phosphorus steam pressure in the quartz tube is successfully controlled through length allocation of a heating area and a condensation area for synthesizing a quartz tube, and safe synthesis of a large amount of zinc phosphide is realized; and relatively high yield of a product is realized by controlling the length of the condensation area and the heating area, and the product is applied to the application fields of photoelectric device manufacturing, diffusion sources, nano materials and the like.

Description

technical field

[0001] The invention relates to a preparation method of high-purity zinc phosphide. Background technique

[0002] High-purity zinc phosphide is a II-V semiconductor material with a band gap of 1.5ev. In recent years, zinc phosphide materials have been highly concerned by people, and compound semiconductors such as gallium arsenide and indium phosphide are indispensable semiconductor materials in the field of modern wireless communication and optical communication. In device technology such as indium phosphide, high-purity zinc phosphide is often used as a diffusion source. Zinc phosphide is one of the semiconductor materials that countries are currently actively investing in applied research, including applied research on solar cells and single-dimensional nanodevices. Therefore, with the continuous expansion of its application fields, the demand for zinc phosphide materials will also increase. There will be a large increase, and the development prospect is...

Images