CDs/TiO2 film, and preparation method and application thereof

Abstract

The invention discloses a CDs / TiO2 film, and a preparation method and an application thereof, and relates to the technical field of CDs / TiO2 films. The problems of poor preparation methods and poor light polarization sensitivity of a carbon-based titanium dioxide composite film are solved. The CDs / TiO2 film comprises a glass substrate, a TiO2 nano-porous layer deposited on the glass substrate, andcarbon dots adsorbed on the TiO2 nano-porous layer or a carbon dot layer deposited on the TiO2 nano-porous layer. The method comprises the following steps: depositing the TiO2 nano-porous layer on the glass substrate by adopting a dip-coating process, preparing a carbon dot solution, and soaking the deposited glass substrate in the carbon dot solution to prepare carbon dots adsorbed on the TiO2 nano-porous layer, or dispensing the carbon dot solution on the deposited glass substrate to prepare the carbon dot layer. The film can be applied to holographic storage, light wavelength indication orlight polarization state indication. The film of the invention has a higher light polarization sensitivity than the traditional carbon-based titanium dioxide composite film, and also has a high flatness and a good transparent effect; and the preparation method has the advantages of simplicity, low cost, and obtaining of the CDs / TiO2 film with good quality.

Description

technical field [0001] The present invention relates to CDs / TiO 2 The field of thin film technology, specifically related to a CDs / TiO 2 Thin films and their methods of preparation and applications. Background technique [0002] Advanced information processing technologies, such as information encryption and high-density optical storage, are one of the core topics in the era of big data. It can effectively deal with data expansion caused by the development of the Internet, cloud computing, and massive secure storage. The existing carbon-based structure composite film, that is, graphene oxide (GO) and porous titanium dioxide composite film with freely dispersed two-dimensional structure, can realize holographic storage, but GO / TiO 2 Composite films are not polarization-sensitive, and cannot achieve high-density holographic storage of polarization dimensions, and cannot further cope with the problems brought about by the era of big data. Compared with the lamellar structur...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the traditional carbon-based titanium dioxide composite film cannot realize the multiplexing storage of the polarization dimension, filling CDs / TiO 2 Thin films fill research gaps, CDs / TiO 2 The problem of poor flatness and poor transparency of the film, in order to solve the problem of CDs / TiO 2 There are insufficient problems in the thin film preparation method, in order to solve the problem of CDs / TiO 2 The problem of thin film application range is small, the present invention provides a kind of CDs / TiO 2 Thin film and its preparation method and application

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