GB/T 40069-2021 (English Version) PDF

Scope: This document specifies a method for measuring the layer number of graphene-related two-dimensional materials using Raman spectroscopy. This document is applicable to the measurement of the number of layers of graphene flakes prepared by mechanical exfoliation with a lateral dimension of not less than 2 μm. Graphene flakes prepared by chemical vapor deposition (CVD: chemi ca lvapo rdepo sition) in AB stacks or ABC stacks can be implemented with reference to this method. Note 1: When measuring the number of layers of graphene flakes, several methods can be used alone or in combination for joint measurement and mutual verification. Note 2: Chapter 5 gives the line type based on 2D model (A method). Chapter 6 gives the Raman spectroscopy method for measuring the number of layers of graphene flakes based on the SiO2/Si substrate Raman mode peak height (B method). Appendix A gives a summary list of various methods for measuring the layer number of graphene flakes by Raman spectroscopy. Appendix B gives the Raman spectroscopy method for measuring the layer number of graphene flakes based on the peak height (method C) of the G-mode of graphene flakes.

GB/T 40069-2021 Referenced Document

GB/T 30544.13 Nanotechnologies — Vocabulary — Part 13:Graphene and related two-dimensional (2D) materials
GB/T 33252 Nanotechnology—Performance testing for laser confocal microscope Raman spectrometers
JJF 1544 Calibration Specification for Raman Spectrometers

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