Dear Singh,
There are no much difference between CD and QD. CDs are nanoparticles of carbon and QDs are nanoparticles of any kind. All CDs are QDs but all QDs are not CDs.
Dear Singh,
There are no much difference between CD and QD. CDs are nanoparticles of carbon and QDs are nanoparticles of any kind. All CDs are QDs but all QDs are not CDs.
quantum dot is generalized term and carbon dot is nanomaterial of carbon only.
The dots mean 0-dimensional materials. Quantum dots mean nano-scale semiconductors, not metal or insulator nanomaterials. and Carbon dots are the 0-dimensional carbon materials in which we cannot exactly divide the carbon material class into metal, semiconductor or insulator beacuse of their versatility. so, we just calls 'Carbon' materials not distinguishing carbon materials as metal semiconductor or insulators.
The carbon dot indicating the semiconductor properties considered as a quantum dot
There is not big differences between Carbon dot and Quantum dot, if we look on photoluminescence properties of both,
1.First, it is inefficient to tune the PL color by controlling the size of CDs. but in QDot its possible.
2. Another main difference between CDs and QDs is that the PL bandwidth of CDs is much wider.
In a direct way
The CDs have emission dependent excitation wavelength.
The emission of QDs are size dependent.
Both are same. Because dot means zero dimensional material or 3D Confinement material. It either CD or QD or any thing, photon interaction is depend on the size of the material.
Best wishes
If the carbon dot has so small dimensions such that the electrons in the conduction band and holes in the valence band have quantized energy levels with measurable energy difference the carbon dot will be a quantum dot.
Best wishes
Abdelhalim Zekry
Not necessarily, because the CDots not present confinement in 3 dimensions and do not present emissions ruled by size.
Thanks.
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