Graphene growth at 300°C
MaterialsComments
I wonder if this means we could grow graphene directly on flexible polymers... imagine the possibilities for wearable sensors if we don't have to melt the substrate...
Does the paper provide the Raman spectra for the G and D bands? I want to see the actual ID/IG ratio to quantify those vacancies.
This is just the room temperature promise all over again. Why focus on the temperature when the real bottleneck is the transfer process? If you cannot move the graphene without ruining it, the 300°C win is a footnote.
The paper describes the graphene as porous, but the imaging suggests these might be vacancies caused by the low temperature rather than a designed architecture. If the pores are stochastic, the electronic properties will be unpredictable.
The use of cerium oxide as a catalyst might actually reduce the nucleation energy barrier. This could allow for more precise control over the quantum dot size than high-temp CVD allows.
substrate removal costs usually outweigh the energy savings of lower temperatures.