Double-layer CVD (chemical vapor deposition) polycrystal graphene Raman spectrum peak separation method and system

Abstract

The invention discloses a double-layer CVD (chemical vapor deposition) polycrystal graphene Raman spectrum peak separation method and system. The method comprises the following steps of preparing a double-layer CVD graphene element to be tested; performing Raman spectrum experiments on the double-layer CVD graphene element to be tested to obtain a plurality of Raman spectrums; analyzing the Ramanspectrum and the double-layer CVD graphene element to be tested to obtain the peak intensity information and boundary information of the double-layer CVD graphene element to be tested; according to the peak intensity information and the boundary information, performing peak separation on the double-layer CVD graphene element to be tested. The Raman spectrum of the double-layer CVD graphene elementto be tested is subjected to peak separation; the Raman sub peak representing the upper layer graphene and the lower layer graphene is obtained; the stress state and the interface evolution of the graphene in each layer can be analyzed, thus a reliable method is provided for the interface mechanical performance study of the nanometer composite structure of the double-layer graphene / substrate structure; the effective representation of each layer graphene stress information can be realized.

Description

technical field [0001] The invention relates to the field of graphene, in particular to a method and system for splitting Raman spectra of double-layer CVD polycrystalline graphene. Background technique [0002] Graphene has excellent properties such as force, heat, and electricity, and is known as the "king of materials". With the development of new technologies such as graphene flexible electronic devices, graphene materials are widely used in electronic components. Studies have shown that the strain state of graphene affects the electrical properties of graphene and the life of graphene-based components. In addition, double-layer graphene is superior to single-layer graphene in terms of stability, reliability, and electrical performance regulation. Therefore, rapid and effective characterization and research on the strain state of double-layer graphene materials on components is the driving force for graphite. The core basis for the wide application of alkenes. At prese...

AI Technical Summary

Problems solved by technology

At present, the spectral peak method is generally used to study the Raman spectrum of double-layer graphene. The goal is to mechanically exfoliate single-crystal graphene, but there is no effective method for CVD with a more suitable cost and size in engineering applications. In application-oriented research, effective characterization means and methods are essential. Therefore, there is an urgent need for a Raman spectrum peak splitting method and system for double-layer CVD polycrystalline graphene, which can realize effective characterization of the strain information of each layer of graphene. , and then carry out effective characterization, analysis and subsequent design of the two interfaces of the double-layer structure

Images