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Humidity sensor based on molecular device

A technology for humidity sensors and molecular devices, applied in instruments, scientific instruments, analytical materials, etc., can solve problems such as low sensitivity, achieve high sensitivity, high humidity measurement, and expand the detection limit.

Inactive Publication Date: 2020-07-14
金华伏安光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sensitivity of traditional humidity sensors is low. It is the development trend of humidity sensors to explore humidity sensors based on new principles and improve the sensitivity and detection limit of sensors.

Method used

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  • Humidity sensor based on molecular device
  • Humidity sensor based on molecular device

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Embodiment 1

[0018] The invention provides a humidity sensor based on molecular devices, such as figure 1 As shown, the humidity sensor includes an electrical insulating layer 6 , a source electrode 1 , a drain electrode 2 , organic molecules 3 , and water-absorbing material particles 4 . The source 1 , drain 2 , organic molecules 3 , and water-absorbing material particles 4 are placed on the electrical insulating layer 6 . The material of the source electrode 1 and the drain electrode 2 is gold or graphene. The organic molecule 3 is dodecyl mercaptan, anthracene mercaptan, and octyl mercaptan. But it is not limited thereto, organic molecules 3 that can be connected between the source electrode 1 and the drain electrode 2 and that can conduct electricity are all within the protection scope of the present invention. The organic molecule 3 extends between the source electrode 1 and the drain electrode 2, and the organic molecule 3 is connected to the source electrode 1 and the drain electr...

Embodiment 2

[0023] On the basis of Example 1, such as figure 2 As shown, the lithium chloride crystals are arranged under the organic molecules 3, and the lithium chloride crystals are not in contact with each other. Lithium chloride crystals are strip-shaped. The direction of the stripes is perpendicular to the connection direction of the source 1 and the drain 2 . That is, the direction of the strip is perpendicular to the paper surface, and the strip-shaped lithium chloride crystal passes through the lower part of the organic molecule 3 . There are gaps between adjacent strip lithium chloride crystals. An insulating porous material 5 is arranged under the lithium chloride crystal. In this embodiment, strip-shaped lithium chloride crystals are selected, which is equivalent to increasing the size or area of ​​the lithium chloride crystals, which helps the lithium chloride crystals to absorb more water. However, when in figure 2 When the size of the lithium chloride crystal is incr...

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Abstract

The invention provides a humidity sensor based on a molecular device. Organic molecules are arranged between a source electrode and a drain electrode, and water absorbing material particles are arranged near the organic molecules. When the humidity sensor is used, the water absorbing material particles absorb water in an environment to be detected, the activation energy of the absorbing material particles is changed, and the activation energy of organic molecules and the conductive characteristics of the organic molecules are also changed because the water absorbing material particles are positioned near the organic molecules, so that the conductive characteristics between the source electrode and the drain electrode are changed, and the environment humidity is determined through the conductive characteristics. As the conductivity of organic molecules is very sensitive to the activation energy of the organic molecules, high-sensitivity humidity measurement can be realized, and the humidity sensor has an important application prospect in the field of humidity detection.

Description

technical field [0001] The invention relates to the field of humidity detection, in particular to a humidity sensor based on molecular devices. Background technique [0002] Humidity is closely related to human survival and social activities. Traditional humidity sensors include resistive humidity sensors, dew point humidity sensors, carbon humidity sensors, alumina humidity sensors, and ceramic humidity sensors. The sensitivity of traditional humidity sensors is low, and it is the development trend of humidity sensors to explore humidity sensors based on new principles and improve the sensitivity and detection limit of sensors. Contents of the invention [0003] In order to solve the above problems, the present invention provides a humidity sensor based on molecular devices, the humidity sensor includes an electrical insulating layer, a source, a drain, organic molecules, water-absorbing material particles, a source, a drain, organic molecules, water-absorbing materials ...

Claims

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Application Information

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IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 不公告发明人
Owner 金华伏安光电科技有限公司
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