|Standard Number||GB/T 40071-2021|
|Organization||Standardization Administration of China|
|Category||Test Method | Characterization | Measurement|
This document specifies the optical contrast method (including reflectance spectroscopy and optical image method) to measure the number of layers of graphene-related two-dimensional materials.
The contents of the equipment, sample preparation, measurement procedures, test reports, etc.
This document is applicable to the crystal quality prepared by mechanical peeling method or chemical vapor deposition method (CVD. chemical vapor deposition)
Measurement of the number of layers of graphene flakes and graphene films with a high volume, a lateral dimension of not less than 2μm, and a number of layers of not more than 5. Made by other methods Graphene flakes and graphene films can be implemented with reference to this document.