Application of graphene fiber in mid-infrared photoelectric detection

A technology of graphene fiber and infrared light, which is applied in the direction of circuits, electrical components, semiconductor devices, etc., can solve problems such as low density and applicability of microscopic detection devices, and achieve good flexibility, wide application prospects, and simple and convenient operation process Effect

Active Publication Date: 2020-06-30
HANGZHOU GAOXI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Another object of the present invention is to provide the application of graphene fibers in mid-infrared photoelectric detection, which solves the mechanical problems of existing microscopic detection devices, can withstand considerable mechanical effects, can be woven, is low in price, low in density, and high in speed. quick
[0006] Another object of the present invention is to: provide the application of graphene fibers in mid-infrared photoelectric detection, and solve the applicability problem of existing microscopic detection devices

Method used

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  • Application of graphene fiber in mid-infrared photoelectric detection
  • Application of graphene fiber in mid-infrared photoelectric detection
  • Application of graphene fiber in mid-infrared photoelectric detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A flexible mid-infrared detector based on graphene fibers, comprising the following processes:

[0019] (1) Using the dispersion of graphene oxide as the raw material (Golene Technology), using wet spinning technology to prepare solid cylindrical fibers with a diameter of 20 microns, heat reduction at 2000°C for 10 minutes, the measured carbon-oxygen ratio is 10.1.

[0020] (2) Graphene fibers with a length of 1 cm were fixed between copper electrodes and assembled as figure 1 In the detector, a dark current of 20mA is input to the graphene fiber through two electrodes.

[0021] (3) Under the working pressure environment of 10mbar and the working temperature environment of 400K, the wavelength is 3 microns and the power is 5mW / cm 2 The mid-infrared light illuminates the graphene fiber, and the current signal is collected through two electrodes. The current of the device produces a fast response, with a rising edge of 100 nanoseconds, a falling edge of 2 microseconds,...

Embodiment 2

[0023] A flexible mid-infrared detector based on graphene fibers, comprising the following processes:

[0024] (1) Using the dispersion of graphene oxide as the raw material (Golene Technology), using wet spinning technology to prepare solid cylindrical graphene fibers with a diameter of 32 microns, heat reduction at 2000°C for 10 minutes, and measure carbon and oxygen The ratio is 11.

[0025] (2) Prepare the graphene fiber as above image 3 said weaving.

[0026] (3) Set between copper electrodes on both sides of the woven fabric, the distance between the two electrodes is 3cm, and a dark current of 13mA is input.

[0027] (4) The working pressure environment is 1013mbar; the working temperature environment is 30K environment, the wavelength is 5.5 microns, and the power is 7mW / cm 2 The mid-infrared light illuminates the graphene fiber, and the current signal is collected through two electrodes. The device's current response is fast, with a rising edge of 130 nanoseconds...

Embodiment 3

[0030] A flexible mid-infrared detector based on graphene fibers, comprising the following processes:

[0031] (1) Using the dispersion of graphene oxide as the raw material (Golene Technology), using wet spinning technology to prepare solid cylindrical fibers with a diameter of 45 microns, heat reduction at 2000°C for 20 minutes, the measured carbon-oxygen ratio is 10.4.

[0032] (2) A graphene fiber with a length of 10 cm was fixed between copper electrodes, and a dark current of 3 mA was input.

[0033] (3) In the working air pressure environment of 1013mbar; working temperature environment of 400K environment, the use of power is 9mW / cm 2 , the graphene fiber is irradiated with mid-infrared light with a wavelength of 3 microns, and the current signal is collected through two electrodes. The device's current response is fast, with a rising edge of 140 nanoseconds, a falling edge of 4.5 microseconds, and a response time of 1.3 microseconds.

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Abstract

The invention discloses application of graphene fibers in mid-infrared photoelectric detection, and provides a first mid-infrared detector based on macroscopic graphene, the mid-infrared detector canwork under different air pressures and different temperatures, and the detection frequency can reach 1 MHz. Due to good flexibility, the graphene fiber-based detector can be prepared into a knittablephotoelectric device.

Description

technical field [0001] The invention relates to new applications of graphene fibers, in particular to the application of graphene fibers in mid-infrared photoelectric detection. Background technique [0002] Due to its special wavelength distribution, mid-infrared light plays an important role in molecular detection, medical care, meteorological science, secure communication and other fields. [0003] Traditional mid-infrared light detectors can be divided into two types: one is semiconductor, which is relatively brittle and expensive; the other is micro-nano-scale layered materials, such as few-layer graphene, transition metal oxide, etc. (sulfur) compounds, etc., this material is difficult to withstand considerable mechanical action, and the efficiency is low. In addition, traditional mid-infrared detectors can only work at low temperatures, and will gradually fail at high temperatures. Contents of the invention [0004] The purpose of the present invention is to provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/028H01L31/09
CPCH01L31/028H01L31/09
Inventor 高超方波徐杨
Owner HANGZHOU GAOXI TECH CO LTD
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