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Optical thin film with excellent performances

An optical thin film and thin film technology, which is applied in the direction of ion implantation plating, metal material coating process, coating, etc., can solve problems such as obstacles to the practical application of cubic boron nitride optical thin films, so as to avoid bursting and peeling, reduce differences, Effect of improving density and binding force

Inactive Publication Date: 2012-07-04
深圳市西陆光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the practical application of cubic boron nitride optical films has been severely hindered

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] First, single crystal silicon (100) is selected as the base material, washed with acetone in ultrasonic for 10 minutes and then dried with argon for use.

[0016] Subsequently, the substrate is placed on the sample stage of the vacuum chamber of the radio frequency magnetron sputtering, and the sintered hexagonal BN target is placed at the target position, and the sintered hexagonal BN target is added with 3% of the total atomic amount of Si.

[0017] Then the vacuum degree in the vacuum chamber is pumped to ≤5×10 -4 Pa, while introducing pure Ar with a flow rate of 300sccm, when the vacuum chamber pressure is 2Pa, pre-sputtering for 5 minutes, the pre-sputtering power is 150W, the substrate bias is 500V, and the substrate temperature is 430℃ to further remove the substrate surface The impurities and activate the surface atomic activity.

[0018] Then began to pass in N with a flow rate of 8sccm 2 , And reduce the flow of Ar to 32sccm, the pressure of the vacuum chamber to 0.9...

Embodiment 2

[0022] As in Example 1, single crystal silicon (100) was selected as the base material, washed with acetone in ultrasonic for 10 minutes and then dried with argon for use.

[0023] Subsequently, the substrate is placed on the sample stage of the vacuum chamber of radio frequency magnetron sputtering, and the sintered hexagonal BN target is placed at the target position, and the sintered hexagonal BN target is added with 5% of the total atomic amount of Si.

[0024] Then the vacuum degree in the vacuum chamber is pumped to ≤5×10 -4 Pa, while introducing pure Ar with a flow rate of 330sccm, when the vacuum chamber pressure is 2.5Pa, pre-sputtering for 8min, the pre-sputtering power is 170W, the substrate bias is 550V, and the substrate temperature is 450℃ to further remove the substrate Impurities on the surface activate surface atomic activity.

[0025] Then began to pass in N with a flow rate of 10sccm 2 , And reduce the flow of Ar to 30sccm, the pressure of the vacuum chamber to 1Pa...

Embodiment 3

[0029] As in Example 1, single crystal silicon (100) was selected as the base material, washed with acetone in ultrasonic for 10 minutes and then dried with argon for use.

[0030] Subsequently, the substrate is placed on the sample stage of the vacuum chamber of radio frequency magnetron sputtering, and the sintered hexagonal BN target is placed at the target position, and the sintered hexagonal BN target is added with 7% of the total atomic amount of Si.

[0031] Then the vacuum degree in the vacuum chamber is pumped to ≤5×10 -4 Pa, while introducing pure Ar with a flow rate of 350sccm, when the vacuum chamber pressure is 3Pa, pre-sputtering for 10 minutes, the pre-sputtering power is 200W, the substrate bias is 600V, and the substrate temperature is 470℃ to further remove the substrate surface The impurities and activate the surface atomic activity.

[0032] Then began to pass N with a flow rate of 12sccm 2 , And reduce the flow of Ar to 28sccm, the pressure of the vacuum chamber ...

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PUM

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Abstract

The invention discloses an optical thin film with excellent performances, wherein, a CBN (Cubic Boron Nitride) thin film is prepared on a basal body of a monocrystalline silicon (100) through radio-frequency magnetron sputtering, and a small quantity of Si is added when a hexagonal BN (Boron Nitride) target is sintered, so that a small quantity of microcrystalline silicon or amorphous silicon is formed in the CBN thin film or between the CBN thin film and the basal body so as to reduce the performance difference between the CBN thin film and the basal body of the monocrystalline silicon, cracking stripping of the thin film and the basal body can be further avoided, and the compactness and the binding force between the thin film and the basal body can be improved; in addition, the uniform and thicker CBN optical thin film can be prepared through reasonable parameter control.

Description

Technical field [0001] The invention relates to providing an optical film, specifically a cubic boron nitride optical film with excellent performance. Background technique [0002] Cubic boron nitride has ultra-high hardness, second only to diamond, but it also has unparalleled high temperature performance of diamond, avoiding high temperature oxidation or reaction with other materials. In addition to super hardness and chemical stability, cubic boron nitride is transparent in the infrared and visible spectrum, has a very wide band gap, supplemented by the hardness of subdiamonds and extremely high thermal conductivity, its optical application prospects It is also very attractive. It is very likely to replace diamond as an optical window material or as a protective coating for optical components. [0003] However, because the synthesis of cubic boron nitride usually needs to be carried out under high temperature and high pressure, the preparation cost is very high, and it is diffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/06
Inventor 张金凤
Owner 深圳市西陆光电技术有限公司