High-stability temperature sensor for body temperature monitoring and preparation method thereof

A temperature sensor, high-stability technology, used in thermometers using directly heat-sensitive electrical/magnetic components, nanotechnology for sensing, body temperature measurement, etc., can solve the problem of high device cost, low sensitivity, and device life. It can achieve the effect of simple preparation process, low cost and reducing the density of defect states.

Inactive Publication Date: 2021-04-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problems caused by high device cost, poor device life and low sensitivity in the existing temperature sensor detection technology for body temperature monitoring

Method used

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  • High-stability temperature sensor for body temperature monitoring and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-stability temperature sensor for body temperature monitoring provided by a preferred embodiment of the present invention includes a substrate, a gate electrode, a gate insulating layer, an organic semiconductor, a source electrode and a drain electrode, and the organic semiconductor layer introduces The mass fraction is 1%-3% soybean isoflavone and 0.2%-0.5% dibutyl hydroxytoluene.

[0037]The substrate can be a rigid substrate or a flexible substrate, such as one of silicon wafer, glass, polymer film and metal foil, which has a certain ability of waterproofing and oxygen penetration, and has better surface smoothness.

[0038] The gate electrode, source electrode, and drain electrode are made of materials with low resistance, such as gold (Au), silver (Ag), magnesium (Mg), aluminum (Al), copper (Cu), calcium (Ca), barium (Ba ), nickel (Ni) and other metals and their alloy materials, metal oxides, such as indium tin oxide (ITO), zinc tin oxide (IZO) conductive fi...

Embodiment 2

[0043] In this embodiment, on the basis of Embodiment 1, the preparation method is as follows:

[0044] ① Thoroughly clean the glass substrate on which the gate electrode ITO has been sputtered, and dry it with dry nitrogen after cleaning;

[0045] ② Prepare a PS film on ITO by spin coating to form a gate insulating layer of 100nm;

[0046] ③The spin-coated PS film is heated and baked;

[0047] ④ Spin-coat a 100nm mixed organic semiconductor layer of P3HT, soybean isoflavone, and dibutyl hydroxytoluene with a mass fraction of 98.5%: 1%: 0.5% on the gate insulating layer;

[0048] ⑤ Copper source electrode and drain electrode 100nm were prepared by vacuum evaporation.

[0049] The temperature response characteristics of the device are tested, and the detection effect is good and the service life is long.

Embodiment 3

[0051] In this embodiment, on the basis of Embodiment 1, the preparation method is as follows:

[0052] ① Thoroughly clean the glass substrate 1 on which the gate electrode ITO has been sputtered, and dry it with dry nitrogen after cleaning;

[0053] ② Prepare a PVA film on ITO by spin coating method to form a 20nm gate insulating layer;

[0054] ③The spin-coated PVA film is heated and baked;

[0055] ④ Spin-coat a 200nm mixed organic semiconductor layer of P3HT, soybean isoflavone, and dibutyl hydroxytoluene with a mass fraction of 96.8%: 3%: 0.2% on the gate insulating layer;

[0056] ⑤ Prepare gold source electrode and drain electrode 40nm by vacuum evaporation.

[0057] The temperature response characteristics of the device are tested, and the detection effect is good and the service life is the longest.

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Abstract

The invention discloses a high-stability temperature sensor for body temperature monitoring and a preparation method thereof, and belongs to the field of temperature sensors. After a certain amount of soy isoflavone and butylated hydroxytoluene are introduced into an organic semiconductor layer, the service life of a device is remarkably prolonged by utilizing the oxidation resistance and hydrophobicity of the soy isoflavone and butylated hydroxytoluene to grease, and the stability of the device is enhanced. Compared with an existing packaged transistor type skin sensor, due to the fact that soy isoflavone and butylated hydroxytoluene are introduced, secondary packaging of the device is avoided, the thickness of the transistor device is effectively reduced, and miniaturization of the sensor is achieved; and after butylated hydroxytoluene is introduced into the organic semiconductor layer, the morphology of the organic semiconductor layer film is effectively changed, and the defect state density of the organic semiconductor layer is reduced.

Description

technical field [0001] The invention relates to the field of temperature sensors, in particular to a high-stability temperature sensor for body temperature monitoring and a preparation method thereof, belonging to the technical field of electronic components. Background technique [0002] The human body is a very sophisticated system. A stable body temperature is very important for maintaining the activity of various enzymes in the human body. If the temperature is too low or too high, it will lead to major changes in the internal environment of the human body, making the human body in an abnormal state, and may cause cause irreversible damage to the body. [0003] A healthy human body will automatically regulate its body temperature and maintain a relatively stable temperature by generating heat or dissipating heat, while a sub-healthy or sick individual cannot maintain a normal body temperature because the body is in an abnormal state. Therefore, by detecting the temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/01G01K13/20B82Y15/00B82Y40/00
CPCB82Y15/00B82Y40/00G01K7/015
Inventor 范惠东杨根杰潘博闻于军胜
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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