Device used for terahertz wave detection and preparation method therefor

A terahertz and device technology, applied in the field of detectors, can solve the problems of poor sensitivity, low radiation power of terahertz light source, and narrow detection frequency, and achieve the effect of improving mechanical strength

Active Publication Date: 2017-09-22
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Since the radiation power of terahertz light sources is generally relatively low at present, the existing devices for terahertz wave detection generally have slow response speed (pyroelectric detectors), narrow detection frequency (Schottky diodes), and poor sensitivity. (Golaycell detector) and the need for low temperature work (bolometer), so it is particularly important to develop a high-speed, high-sensitivity, high-signal-to-noise device for terahertz wave detection that can work at room temperature

Method used

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Embodiment 1

[0055] A method for preparing a device for terahertz wave detection, comprising the following steps:

[0056] (1) Under the protection of nitrogen, mix ammonium hexachloroiridate, nickel nitrate hydrate, ammonium molybdate, ethanol and propionic acid; then reflux and stir for 5 minutes, then add ammonia water; react for 10 minutes and cool to room temperature naturally, add ethyl acetate Ester polysettling and centrifugation; washing the centrifuged precipitate with water and dispersing it in ethanol to obtain a dispersion system; then adding strontium nitrate, cobalt nitrate, and water, stirring for 10 minutes, adding samarium tricene, stirring for 1 hour, to obtain a support layer precursor;

[0057] (2) Add polyvinyl alcohol, hydrogen peroxide and iron tetraphenylporphyrin to the dispersion system, stir at 50°C for 1 hour, then add ethyl naphthoyl acetate and dibutyl phthalate, reflux and stir for 10 minutes, then Concentrate to obtain a concentrate with a solid content of ...

Embodiment 2

[0066] A method for preparing a device for terahertz wave detection, comprising the following steps:

[0067] (1) Under the protection of nitrogen, mix ammonium hexachloroiridate, nickel nitrate hydrate, ammonium molybdate, ethanol and propionic acid; then reflux and stir for 5 minutes, then add ammonia water; react for 10 minutes and cool to room temperature naturally, add ethyl acetate Ester polysettling and centrifugation; washing the centrifuged precipitate with water and dispersing it in ethanol to obtain a dispersion system; then adding strontium nitrate, cobalt nitrate, and water, stirring for 10 minutes, adding samarium tricene, stirring for 1 hour, to obtain a support layer precursor;

[0068] (2) Add polyvinyl alcohol, hydrogen peroxide and iron tetraphenylporphyrin to the dispersion system, stir at 50°C for 1 hour, then add ethyl naphthoyl acetate and dibutyl phthalate, reflux and stir for 10 minutes, then Concentrate to obtain a concentrate with a solid content of ...

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Abstract

The invention belongs to the technical field of a detector, and specifically relates to a device used for terahertz wave detection and a preparation method therefor. By taking aluminum-gallium-nitride/gallium-nitride high-electron-mobility field effect transistor (HEMT) as a basic structure, an aluminum-gallium-nitride/gallium-nitride layer is prepared through substrate design and an epitaxial method; and next, an active region table surface, gate dielectric, an ohmic contact window and an electrode are prepared, wherein the two-dimensional electron gas in the obtained field effect transistor is relatively high in electron concentration and mobility, a wave spectrum detection apparatus with high-speed, high-sensitivity and high signal to noise ratio detection can be realized on THz at a room temperature, and terahertz wave detection is realized finally.

Description

technical field [0001] The invention belongs to the technical field of detectors, and in particular relates to a device for terahertz wave detection and a preparation method thereof. Background technique [0002] Due to the high frequency of terahertz wave, its spatial resolution is also high; and because its pulse is very short (picosecond level), it has high time resolution. Terahertz imaging technology and terahertz spectroscopy technology thus constitute the two main key technologies for terahertz applications. At the same time, because terahertz energy is very small and will not cause damage to matter, it has more advantages than X-rays. In addition, since the resonance frequency of the vibration and rotational frequency of biological macromolecules is in the terahertz band, terahertz has good application prospects in the agricultural and food processing industries such as grain selection and selection of excellent strains. The vibration and rotational energy levels o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/113G01J1/42
CPCG01J1/42H01L31/113H01L31/1848H01L31/1852Y02P70/50
Inventor 孙云飞班建民陶重犇刘传洋
Owner SUZHOU UNIV OF SCI & TECH
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