How to confirm the two-dimensional (2D) heterostructured composites? Apart from the SEM, TEM and EDX, which technique is more suitable to confirm the heterostructured composite?
Thangarasu, what is crucial property for the composite do you consider?
The dimensionality-caused changes can affect
- phonon properties (probed by Raman spectroscopy),
- optical properties (probed by photoluminescence spectroscopy),
- also in case of continuous semiconductor heterostructures it changes electron magnetotransport properties (vanishing magnetoresistance in magnetic field applied along the current in two-dimensional layer, also quantum Hall effect).
SEM / EDX analysis is better choice for confirm the heterostructured composite.
TEM is the best choice to confirm the heterostructured composite... Because you can get a clear view of composition in high magnification...... In further the elemental composition can be confirmed by EDX analysis..
If it is semiconductor composite, band gap value could be better choice of hetero-structure determination
If it's relatively ordered and a 2D composite, XRD could give you a hint. If you can have access to a starting point and a composite point, you should see changes via XRD. If your heterostructure is large enough, EDX mapping over a cut of a slab of your structure might give you another hint if the two components are different enough from each other depending on electronic density.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science