GB/T 40069-2021 Active National standards

GB/T 40069-2021 Nanotechnologies—Measurement of the number of layers of graphene-related two-dimensional (2D) materials—Raman spectroscopy method

Publish Date: 2021-05-21 Implement Date: 2021-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 40069-2021

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Optical testing instruments

ICS Name: Optical measurement instruments

Publish Date: 2021-05-21

Implement Date: 2021-12-01

Pages: 29 pages

Scope

This document specifies the method of using Raman spectroscopy to measure the number of layers of graphene-related two-dimensional materials.
This document is applicable to the measurement of the number of layers of graphene flakes prepared by mechanical exfoliation with a lateral size of not less than 2 μm. Graphene flakes prepared by chemical vapor deposition (CVD) with AB stacking or ABC stacking can refer to this method for implementation.
Note 1: When measuring the number of layers of graphene flakes, several methods can be used individually or in combination to measure and verify each other.
Note 2: Chapter 5 presents the linear method (Method A) based on the 2D model. Chapter 6 presents the Raman spectroscopy method for measuring the number of layers of graphene flakes based on the peak height of the silicon Raman model on the SiO2/Si substrate (Method B). Appendix A presents a summary list of various methods for measuring the number of layers of graphene flakes by Raman spectroscopy. Appendix B presents the Raman spectroscopy method for measuring the number of layers of graphene flakes based on the peak height of the G model of graphene flakes (Method C).