Composite multilayer thin film material with optical property and rectification effect, and preparation method and application thereof

A multi-layer film and rectification effect technology, applied in the field of photocatalytic materials, achieves the effects of high processing temperature, strong light absorption performance, and simple operation

Active Publication Date: 2018-12-18
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention provides a composite multilayer thin film material with optical properties and rectification effect and its preparation method and application, which are used to solve the problem that the existing photocatalytic materials can not only improve the light absorption performance, but also improve the photogenerated carrier. separation problem

Method used

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  • Composite multilayer thin film material with optical property and rectification effect, and preparation method and application thereof
  • Composite multilayer thin film material with optical property and rectification effect, and preparation method and application thereof
  • Composite multilayer thin film material with optical property and rectification effect, and preparation method and application thereof

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Embodiment 1

[0051] see figure 1 , is a schematic structural view of the composite multilayer thin film material in the embodiment of the present invention. The present embodiment carries out the preparation of composite multi-layer film material of the present invention, comprises the following steps:

[0052] (1) Substrate 1 of the present embodiment is a layer of F-doped SnO coated on the surface of soda-lime glass. 2 The FTO conductive glass is a transparent substrate. Firstly, the substrate 1 is cleaned with deionized water, acetone, ethanol and deionized water in sequence, and then blown dry with nitrogen gas. The cleaning time is 15 minutes each time.

[0053] (2) Carry out CuCrO to the cleaned substrate 1 2 For the deposition of film 2, put the substrate 1 into the substrate tray and put it into the sputtering chamber, vacuumize the sputtering chamber, and use the FJL-560 magnetron sputtering machine to conduct CuCrO 2 Preparation of Film 2. Pre-sputtering was carried out for ...

Embodiment 2

[0057] This embodiment changes the time and modulation period of magnetron sputtering on the basis of embodiment 1, CuCrO 2 The sputtering time for the deposition of film 2 was 8.5 min, and the sputtering time for the deposition of CuO film 3 was 8.5 min. The sputtering was repeated 6 times in total, and the cycle of alternate deposition was 6 cycles. In the prepared composite multilayer film material, CuCrO 2 The thickness ratio of film 2 and CuO film 3 is 1:2, and each layer of CuCrO 2 The thickness of the thin film 2 is 11.1 nm, and the thickness of each CuO thin film 3 is 22.2 nm.

Embodiment 3

[0067] In this embodiment, the composite multilayer film material of the embodiment and the composite multilayer film material of the comparative example are tested for ultraviolet-visible light absorption spectrum. For the results, please refer to figure 2 , are the ultraviolet-visible light absorption spectra of the composite multilayer thin film material of the embodiment of the present invention and the composite multilayer thin film material of the comparative example. The results show that both the composite multilayer film material of Example 1 and the composite multilayer film material of Example 2 have good and stable absorbance, and the absorption peaks are around 711nm and 707nm respectively. The light absorption peaks of the composite multilayer film material of comparative example 1, the composite multilayer film material of comparative example 2 and the composite multilayer film material of comparative example 3 are at about 542nm, 617nm and 520nm respectively, a...

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Abstract

The invention belongs to the technical field of photocatalytic materials, and particularly relates to a composite multilayer thin film material with the optical property and the rectification effect,and a preparation method thereof. The composite multilayer thin film material comprises CuCrO2 thin films and CuO thin films which are all arranged alternatively; one layer of CuCrO2 thin film and onelayer of CuO thin film which are arranged alternatively serve as a cycle, and the alternatively arranging cycle is 6-14; and the thickness ratio of the CuCrO2 thin film to the CuO thin film is 1:2. The results show that the composite multilayer thin film material has the optical property and the rectification effect, is high in light absorption performance, can effectively promote separation andmigration of photon-generated carriers, improves the efficiency during a reaction of photocatalytic water splitting for hydrogen production, and has the great application prospect in the aspects of solar energy utilization and environmental protection. The preparation method is easy to operate and low in cost.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to a composite multilayer thin film material with optical characteristics and rectification effect, its preparation method and application. Background technique [0002] In order to achieve the sustainable development of energy, among many energy sources, renewable energy-solar photolysis of water to produce hydrogen has become the focus. Since Honda-Fujishima discovered in the 1970s that N-type semiconductor TiO can promote sunlight to split water, semiconductor Materials have caused a great research boom in photocatalytic water splitting. At present, the formation of a PN junction through the composite structure of two semiconductor materials can facilitate the separation of photogenerated carriers, but the improvement of light absorption performance is relatively insignificant; multilayer photocatalytic materials can greatly broaden the absorption of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/08C23C14/04
CPCC23C14/0036C23C14/042C23C14/08C23C14/087C23C14/352
Inventor 张雅丽谢致薇杨元政陶平均许佳雄何玉定
Owner GUANGDONG UNIV OF TECH
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