If someone has semiconducting nanoparticles, then how does he classify them in terms of confinement of electron movement?
You can judge quantum confinement effects by comparing the exciton Bohr diameter of the semiconductor in relation the size of the nanocrystal/quantum dot (QD).
An exciton in a QD experiences both confinement and Coulomb interactions.
1. Strong confinement regime. If the QD diameter is smaller than the exciton Bohr diameter, confinement effects are more important than the Coulomb interactions between the electron and hole, resulting a strongly confined exciton.
2. Weak confinement. If the QD size is larger than the exciton Bohr diameter, the Coulomb interactions between the electron and hole is stronger than the confinement effects, resulting a weakly confined exciton.
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