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Flexible substrate ZnS film preparation method

A flexible substrate and thin film technology, which is applied in the field of semiconductor optoelectronic thin film materials, can solve the problems of low ZnS sputtering rate and pollution of sputtering equipment, and achieve the effect of low cost, simple process and pollution reduction

Active Publication Date: 2014-08-13
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when using the magnetron sputtering method to prepare ZnS thin films on flexible substrates, ZnS targets are selected as sputtering source materials, but the sputtering rate of ZnS is low, and the commonly used sputtering time is more than 1 hour, and ZnS targets are used. There is a certain pollution to the sputtering equipment by sputtering the material

Method used

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  • Flexible substrate ZnS film preparation method
  • Flexible substrate ZnS film preparation method
  • Flexible substrate ZnS film preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Stainless steel sheets were used as flexible substrate materials, and the stainless steel sheet substrates were cleaned ultrasonically with acetone, ethanol, and deionized water, and then dried with N 2 Blow dry, and put the stainless steel sheet substrate into the magnetron sputtering vacuum chamber. Evacuate the vacuum chamber to a background vacuum of 4.0×10 -4 Pa, then high-purity Ar is introduced as the working gas, the Ar flow rate is 20ml / min, and the working pressure is adjusted to 0.5Pa through the gate valve. A single metal Zn target was used for DC magnetron sputtering, the sputtering power was 50W, the sputtering time was 300 seconds, and the substrate was not heated during the sputtering process. After the sputtering is completed, the sample is transferred to a tube furnace for vulcanization treatment. The vulcanization source material is solid sulfur powder. During the vulcanization process, no protective gas is introduced, and the tube furnace is vacuume...

Embodiment 2

[0030] Using polyimide as a flexible substrate material, the polyimide substrate was cleaned ultrasonically with acetone, ethanol, and deionized water, and then dried with N 2 Blow dry, and put the polyimide substrate into the magnetron sputtering vacuum chamber. Evacuate the vacuum chamber to a background vacuum of 4.0×10 -4 Pa, then high-purity Ar is introduced as the working gas, the Ar flow rate is 20ml / min, and the working pressure is adjusted to 0.5Pa through the gate valve. A single metal Zn target was used for DC magnetron sputtering, the sputtering power was 50W, the sputtering time was 300 seconds, and the substrate was not heated during the sputtering process. After the sputtering is completed, the sample is transferred to a tube furnace for vulcanization treatment. The vulcanization source material is solid sulfur powder. During the vulcanization process, no protective gas is introduced, and the tube furnace is vacuumed with a mechanical pump. The vulcanization te...

Embodiment 3

[0032] Using titanium foil as a flexible substrate material, the titanium foil substrate was cleaned ultrasonically with acetone, ethanol, and deionized water, and then dried with N 2 Blow dry, and put the titanium foil substrate into the magnetron sputtering vacuum chamber. Evacuate the vacuum chamber to a background vacuum of 4.0×10 -4 Pa, then high-purity Ar is introduced as the working gas, the Ar flow rate is 20ml / min, and the working pressure is adjusted to 0.5Pa through the gate valve. A single metal Zn target was used for DC magnetron sputtering, the sputtering power was 50W, the sputtering time was 300 seconds, and the substrate was not heated during the sputtering process. After the sputtering is completed, the sample is transferred to a tube furnace for vulcanization treatment. The vulcanization source material is solid sulfur powder, and N is injected during the vulcanization process. 2 As a protective gas, the vulcanization temperature is 450°C, and the vulcaniz...

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Abstract

The present invention discloses a flexible substrate ZnS film preparation method, wherein a metal Zn film is deposited on a flexible substrate material by using magnetron sputtering, and then a vulcanization treatment is performed to prepare the ZnS film. The concrete steps comprise: selecting a metal Zn target as a sputtering target; cleaning a flexible substrate material; adopting a magnetron sputtering method to deposit a metal Zn film on the flexible substrate; and in a sulfur atmosphere, carrying out a vulcanization treatment on the prepared metal Zn film, such that the Zn film reacts with sulfur to produce the flexible substrate ZnS film. The preparation method is applicable to different types of the flexible substrate materials, and has advantages of simple process, effective film component adjustment, low cost, suitability for mass production and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of semiconductor photoelectric thin film materials, in particular to a preparation method of a flexible substrate ZnS thin film. Background technique [0002] II-VI compound zinc sulfide (ZnS) thin film is an important wide-bandgap semiconductor material, and its direct optical bandgap at room temperature is 3.7eV. ZnS film has the advantages of low dielectric constant, high light transmittance, stable chemical properties, etc., and has good photoelectric, piezoelectric, gas-sensing and thermoelectric properties. In addition, the constituent elements Zn and S of the ZnS film are non-toxic elements, and are abundant in the earth's crust and low in price, making the ZnS film an environmentally friendly semiconductor. ZnS thin films have broad application prospects in nonlinear optical devices, display devices, surface acoustic wave devices, solar cells, ultraviolet light detectors, semiconducto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/14C23C8/62
Inventor 许佳雄杨元政谢致薇陈先朝何玉定曹中明辛辅炼魏坚烽黄俊彬温楚雄邱莎莎
Owner GUANGDONG UNIV OF TECH