I wish to test some Graphene samples made by thermal reduction. I have conducted TEM, Raman and BET tests so far. Apart from BET, the other two tests seem positive. But, BET, probably because of sample preparation is not worth looking at.
So I wish to conclude characterization with electrical properties.
We are measuring the electrical resistance by simply compressing graphene powders between two metal plates, increasing the compression until the resistance gets a constant value. Long relaxation times -in order of a couple of hours- are required for each applied pressure until you get a stable value in the source/meter we use. The values we obtain seem consistent with our preparation conditions. Hope it is useful, let me know! Regards
First rough estimation you get also from the average peak of 2D FWHM acc. NanoLett 2009, Vol 9, No 8, 2873.
Look to the conditions to estimate the accuracy.
Regards
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials
- Carbon Materials
- Graphite
- Graphene