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Environment-friendly dielectric material for photo-resistor and preparation method thereof

A technology for photoresistors and dielectric materials, applied in circuits, electrical components, semiconductor devices, etc., can solve problems such as the difficulty of eliminating free chloride ions, the sensitivity of photoresistors, and the impact on human health. and environment-friendly, eliminating negative effects

Inactive Publication Date: 2018-04-20
SICHUAN QIXING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cadmium can irritate the respiratory tract. Long-term exposure can cause anosmia, macular spots or yellow circles on the gums. Cadmium compounds are not easily absorbed by the intestines, but can be absorbed by the body through breathing and accumulate in the liver or kidneys, causing harm, especially for Kidney damage is the most obvious, and it can also lead to osteoporosis and softening. The cadmium content of the photoresistor usually reaches several thousand ppm or higher, which affects human health, pollutes the environment, and is not environmentally friendly.
In addition, people add copper chloride material to the photosensitive layer to increase the dark resistance of the photoresistor and reduce its bright resistance, thereby improving the sensitivity of the photoresistor, but the introduction of free chlorine ions is difficult to eliminate, which affects the sensitivity of the photoresistor. Negative impact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An environment-friendly photoresistor dielectric material described in this embodiment comprises the following components in parts by weight: 20 parts of zinc sulfide, 10 parts of bismuth sulfide, 20 parts of aluminum sulfide, lutetium chloride 0.1 part, 0.05 part of neodymium chloride, 1 part of copper sulfate solution, 20 parts of ionized water.

[0022] A preparation method of an environment-friendly photosensitive resistor dielectric material, comprising the following steps:

[0023] (1) preparing a ceramic matrix, which is prepared from alumina with a purity of more than 94%;

[0024] (2) Prepare a medium solution, dissolve zinc sulfide, bismuth sulfide, aluminum sulfide, lutetium chloride, and neodymium chloride in ionized water, stir and mix uniformly, then add copper sulfate solution and stir and mix uniformly to obtain a medium solution, the medium The solution is a photosensitive solution;

[0025] (3) The medium solution is evenly sprayed on the surface of ...

Embodiment 2

[0029] An environment-friendly photoresistor dielectric material described in this embodiment, in parts by weight, the dielectric material includes the following components: 25 parts of zinc sulfide, 20 parts of bismuth sulfide, 22 parts of aluminum sulfide, lutetium chloride 0.15 parts, 0.07 parts of neodymium chloride, 1.5 parts of copper sulfate solution, and 40 parts of ionized water.

[0030] A preparation method of an environment-friendly photosensitive resistor dielectric material, comprising the following steps:

[0031] (1) preparing a ceramic matrix, which is prepared from alumina with a purity of more than 94%;

[0032] (2) Prepare a medium solution, dissolve zinc sulfide, bismuth sulfide, aluminum sulfide, lutetium chloride, and neodymium chloride in ionized water, stir and mix uniformly, then add copper sulfate solution and stir and mix uniformly to obtain a medium solution, the medium The solution is a photosensitive solution;

[0033] (3) The medium solution i...

Embodiment 3

[0037] An environment-friendly photoresistor dielectric material described in the present embodiment comprises the following components in parts by weight: 30 parts of zinc sulfide, 30 parts of bismuth sulfide, 25 parts of aluminum sulfide, lutetium chloride 0.2 parts, 0.09 parts of neodymium chloride, 2 parts of copper sulfate solution, and 60 parts of ionized water.

[0038] Its preparation method is as embodiment 1.

[0039] The photoresistor material prepared in this embodiment has the advantages of safety, environmental protection and high sensitivity.

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Abstract

The invention discloses an environment-friendly photoresistor dielectric material and a preparation method thereof. In parts by weight, the dielectric material includes the following components: 20-40 parts of zinc sulfide, 10-50 parts of bismuth sulfide, and aluminum sulfide. 20-30 parts, 0.1-0.3 parts of lutetium chloride, 0.05-0.15 parts of neodymium chloride, 1-3 parts of copper sulfate solution, and 20-90 parts of ionized water. The application can improve the sensitivity of the photoresistor, and the raw materials used are safe and non-toxic, friendly to humans and the environment, and safe and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of photosensitive resistors, in particular to an environment-friendly photosensitive resistor dielectric material and a preparation method thereof. Background technique [0002] Photoresistors are optoelectronic components made of semiconductor materials that use the internal photoelectric effect to work. Its resistance value tends to decrease under the action of light. This phenomenon is called the photoconductive effect. Therefore, the photoresistor is also called the light guide. [0003] The materials used to make photoresistors are mainly semiconductors such as metal sulfides, selenides, and tellurides. Usually, coating, spraying, sintering and other methods are used to make very thin photoresistors and comb ohmic electrodes on insulating substrates, and then the leads are connected and packaged in a sealed case with a light-transmitting mirror to prevent moisture from affecting its sensitivity. When ...

Claims

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Application Information

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IPC IPC(8): C04B41/85H01L31/0328H01L31/08
CPCC04B41/85C04B41/009C04B41/5014H01L31/0328H01L31/08C04B35/10C04B41/5012C04B41/4543C04B41/52C04B41/0072
Inventor 江明泓
Owner SICHUAN QIXING ELECTRONICS
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