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Zinc oxide nanofiber qcm ultraviolet photosensitive sensor and preparation method thereof

A zinc oxide nanometer and sensor technology, applied to instruments, weighing equipment using elastically deformable parts, measuring devices, etc., can solve the problems of high cost, complicated preparation process, short response time, etc., and achieve reliable principle and excellent preparation method Simple, fast response time effects

Inactive Publication Date: 2019-01-18
THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a zinc oxide nanofiber QCM ultraviolet photosensitive sensor and its preparation method. High disadvantage, the device also has the advantages of simple preparation method, short response time, high sensitivity, simple operation, etc., providing a new method for making high-performance ultraviolet light sensors

Method used

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  • Zinc oxide nanofiber qcm ultraviolet photosensitive sensor and preparation method thereof
  • Zinc oxide nanofiber qcm ultraviolet photosensitive sensor and preparation method thereof
  • Zinc oxide nanofiber qcm ultraviolet photosensitive sensor and preparation method thereof

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Embodiment 1

[0028] A preparation method of zinc oxide nanofiber QCM ultraviolet photosensitive sensor, comprising the following steps:

[0029] (1) Preparation of zinc oxide nanofiber sensitive layer: first, dissolve 1.2 grams of polyvinylpyrrolidone with a relative molecular weight of 1.3 million in 8.5 grams of absolute ethanol, place it in a conical flask A, and heat and stir it in a water bath at 60°C After 4 hours, solution A was obtained, and 1.2 grams of zinc acetate was added into the Erlenmeyer flask B containing 2 grams of absolute ethanol and 0.45 grams of deionized water, and stirred for 2 hours under a magnetic stirrer to obtain inorganic salt solution B, which was prepared by mixing polymer solution A and inorganic salt solution B, and fully stirred for 2 hours with a magnetic stirrer to obtain a precursor spinning solution of zinc oxide; The collecting electrode is silicon wafer or aluminum foil, and the precursor spinning solution of zinc oxide is added to the syringe. The...

Embodiment 2

[0033] A preparation method of zinc oxide nanofiber QCM ultraviolet photosensitive sensor, comprising the following steps:

[0034] (1) Preparation of zinc oxide nanofiber sensitive layer: first dissolve 1 gram of polyethylene oxide PEO (relative molecular mass: 5,000,000) in deionized water, place in Erlenmeyer flask A, and stir with a magnetic stirrer for 4 hours at room temperature , to obtain solution A, add 1.2 grams of zinc acetate into the conical flask B equipped with 2 grams of absolute ethanol and 0.45 grams of deionized water, stir for 2 hours under a magnetic stirrer, obtain inorganic salt solution B, mix the prepared high Molecular solution A and inorganic salt solution B are fully stirred with a magnetic stirrer for 2 hours to obtain a precursor spinning solution of zinc oxide; the positive pole of the high-voltage power supply of the electrospinning device is connected to the needle tip of the syringe, and the negative pole receives the collector. Add the precur...

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Abstract

The invention discloses a zinc oxide nanofiber QCM ultraviolet photosensitive sensor and a preparation method thereof. The sensor is a QCM quality-type sensor, and an electro spinning nano zinc oxide filer film is taken as a sensitive material of the quartz crystal microbalance (QCM) quality type sensor. The sensor does not need to prepare an electrode on the photosensitive material, defects of complex preparation technology and high cost of an existing resistance type ultraviolet photosensitive sensor are overcome, the device also has the advantages of the simple preparation method, short response time, high sensitivity, simple operation and the like at the same time, and a new method is provided for preparation of a high-performance ultraviolet light sensor.

Description

technical field [0001] The invention belongs to the field of quartz crystal microbalance (QCM) sensors, and in particular relates to a zinc oxide nanofiber QCM ultraviolet photosensitive sensor and a preparation method thereof. Background technique [0002] The photosensitive sensor is one of the most common sensors. The photosensor is one of the sensors with the largest output and widest application at present. It occupies a very important position in automatic control and non-electrical measurement technology. Its main component, the photoresistor, is made of photosensitive materials whose electrical properties change under illumination. Zinc oxide is a wide-bandgap semiconductor material with a band gap of 3.37eV. All have high absorption rate, which is especially important for ultraviolet photosensitive sensors to detect ultraviolet light intensity sensitively under the background of visible light and infrared light, so they are often used to prepare resistive ultraviole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G3/16
CPCG01G3/165
Inventor 李照建张红娣龙云泽公茂刚刘燕杰闫旭于桂凤
Owner THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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