A growth device for improving the quality and single crystal rate of cadmium zinc telluride crystals

By designing an inverted conical spiral flow channel and cooling medium, the problem of heat accumulation during the growth of zinc cadmium telluride crystals was solved, achieving high-quality and high single-crystal ratio crystal growth and improving the overall quality and single-crystal ratio of the crystals.

CN122406359APending Publication Date: 2026-07-17KUNMING INST OF PHYSICS

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KUNMING INST OF PHYSICS
Filing Date
2026-05-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

During the growth of zinc cadmium telluride crystals, heat accumulation leads to the formation of concave crystal interfaces at the crystal growth interface, which is unfavorable for high-quality growth, affecting the single crystal rate and quality. The thermal conductivity of existing devices is fixed and cannot be adjusted in real time.

Method used

The design employs an inverted conical spiral flow channel and cooling medium. The cooling medium flows at varying speeds within the flow channel. Through the flow tube made of high-temperature resistant ceramic material and filled with a heat-conducting medium, a gradient cooling effect is formed, improving the heat transfer speed and heat removal efficiency.

Benefits of technology

It stabilized the solid-liquid interface morphology of crystal growth, improved the quality and single crystal rate of the grown crystal, and reduced crystal defects.

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Abstract

本发明公开了一种提高碲锌镉晶体质量及单晶率的生长装置,包括用于晶体生长的坩埚及用于支撑所述坩埚的晶体生长支撑架,所述晶体生长支撑架的顶部设有形状与所述坩埚的底部锥形体匹配的倒锥形收容槽,所述锥形收容槽内设有导流通道;所述导流通道盘绕设置于所述倒锥形收容槽的内侧壁,并围绕晶体生长支撑架的中心轴由倒锥形收容槽的顶部外侧向底部中心呈螺旋状分布,且通道直径沿着顶部外侧向底部中心以设定参数逐渐减小;所述导流通道整体构成与所述坩埚的底部锥形体形状相匹配的倒锥形散热盘,所述坩埚的底部锥形体设置于所述倒锥形散热盘;所述冷却介质从导流通道位于所述顶部外侧的一端流入,从导流通道位于所述底部中心的一端流出。
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