A kind of preparation method of absorbing layer of broad-spectrum radiation detector

A radiation detector and absorbing layer technology, applied in the field of terahertz detection, can solve problems such as poor stability of single-surface absorption rate and inability to respond flatly to single-surface absorbing coatings, so as to reduce the influence of ambient temperature fluctuations and improve spatial uniformity , high yield effect

Active Publication Date: 2021-09-03
绵阳瑾源信息技术有限公司
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Problems solved by technology

[0005] In view of the fact that a single-surface absorbing coating cannot achieve a flat response in a wide band, and due to interference effects, reflectivity changes with temperature, and heat loss, the actual absorption rate of a single surface has poor stability

Method used

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  • A kind of preparation method of absorbing layer of broad-spectrum radiation detector

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Embodiment

[0028] The preparation method of the absorption layer of the broadband radiation detector is as follows:

[0029] Step 1: Select a ceramic sheet with a thickness of 0.3mm and a thickness of 50mm×50mm as the base material to make the third layer of electrical insulation layer;

[0030] Step 2: Select RD65724 resistance paste, accounting for 5% to 30%, as the electric heating layer material, select 3M black paint and add curing agent or thermal conductivity auxiliary material, accounting for 70% to 95%, mix evenly, pass The second layer is formed on one side of the electrical insulation layer by spraying, and then the second layer is cured on the third layer by drying or drying;

[0031] Step 3: Select the combination of modified multi-wall carbon nano powder and nano iron tetroxide powder, each accounting for 2.5% to 15%, and use 3M black paint as the adhesive and add curing agent or heat conduction agent auxiliary materials, accounting for 70% ~95%, use binder to mix polymer ...

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Abstract

The invention discloses a method for preparing an absorbing layer of a broadband radiation detector, which belongs to the technical field of terahertz detection. The absorbing layer of a broadband radiation detector comprises a terahertz main absorbing layer, an electric heating layer, and an electrical insulating layer from the top layer to the bottom layer in sequence. , Terahertz reflective layer. The thickness of the absorbing layer of the broadband radiation detector is controlled between 0.2mm and 0.5mm. The terahertz main absorbing layer is sprayed with 2-3 kinds of conductive polymer materials. The electric heating layer adopts electric heating coating with high resistance stability and thin thickness. , high hardness, thermal conductivity, and can absorb terahertz to a certain extent. The electrical insulation layer is used to isolate the electric heating layer and the base material of the hot end surface of the detector. The terahertz reflective layer is sprayed on the other side of the electrical insulation layer. The formed absorbing layer has the characteristics of a relatively high hardness film and high thermal conductivity, which effectively improves the response speed of the detector, reduces the influence of ambient temperature fluctuations, reduces the heat loss of the absorbing layer, and effectively ensures the stability of the absorbing rate of the coating.

Description

technical field [0001] The invention belongs to the technical field of terahertz detection, and relates to a material with high thermal conductivity and relatively high absorption rate from the millimeter wave band to the terahertz band and the infrared and visible light bands, in particular to a method for preparing an absorbing layer of a broad-spectrum radiation detector. Background technique [0002] Terahertz radiation is a general term for electromagnetic radiation of a specific band, with a frequency range of 0.1THz to 10THz, a special band between optical far-infrared and microwave, and between the two research fields of electronics and optics. It has both optical and microwave properties. In recent years, thanks to the development of ultrafast optoelectronic technology and low-scale semiconductor technology, suitable light sources and detection methods have been provided for the terahertz band. Chemistry, biology, medicine, materials, astronomy and many other field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCH01L31/18
Inventor 冉铮惠徐德王霓丁宇洁王艳茹李凤保
Owner 绵阳瑾源信息技术有限公司
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