Zinc selenide crystal

Abstract

The invention discloses a zinc selenide crystal. The zinc selenide crystal is prepared by the following process: (1), screening and removing impurity from zinc selenide powder; (2), putting the treated zinc selenide powder into a physical vapor deposition furnace, and heating under a vacuum condition, so that zinc selenide vapor is solidified and deposited at the cold end from the hot end to obtain crystals; (3), checking the obtained zinc selenide crystals: cutting the zinc selenide crystals with the preset indexes of a qualified product; (4), putting the unqualified zinc selenide crystals and scraps from the cutting procedure in the step (3) into a sealed container, breaking and recycling; and (5), packaging the qualified crystals by vacuum aluminum plastic paper, and sealing the opening by utilizing a vacuum sealing machine. In the whole preparation procedure, no auxiliary materials or solvents are used, and the whole procedure is performed in a clean room; a physical vapor deposition temperature rising control operation is safe and reliable, and the internal air and the external air of the clean room are highly effectively filtered and isolated, therefore, on the one hand, the quality of products is ensured; and on the other hand, the production personnel and the external environment are protected.

Description

technical field [0001] The invention relates to a crystal zinc selenide. Background technique [0002] Zinc selenide (ZnSe) is a yellow transparent polycrystal, a typical II-VI compound semiconductor material. Molecular weight: 144.35, density: 5.27, melting point: 1525°C. Non-hygroscopic, chemically stable (unless treated with strong acid). [0003] The particle size of zinc selenide crystals is about 70 μm, and the light transmission range is 0.5-15 μm. Due to its excellent physical and chemical properties, it has important application prospects in blue light semiconductor light-emitting devices, nonlinear optoelectronic devices, nuclear radiation detection devices and near-ultraviolet-visible light detection devices. Zinc selenide crystals basically have no impurity absorption, and the scattering loss is extremely Low. Due to its small absorption of 10.6μm wavelength light, it becomes the material of choice for optical devices in high-power CO2 laser systems. In addi...

AI Technical Summary

Problems solved by technology

At present, there is no relatively mature supporting production process system in the country. my country's zinc selenide crystals rely on imports, and large-scale zinc selenide crystals are of military value, and Europe and the United States are strictly prohibited from exporting to China. The deep expansion of the crystal zinc selenide of the present invention not only It has economic value and also has good social value