Size, shape, and temperature dependence of the phonon relaxation dynamics of CdSe nanocrystals

- Bond order (z), length (d), and strength (E) determine the Raman shift, Δω.
- Heating (T) and bond order (z) variation vary the d, E, and Δω.
- Raman shift of nanocrystals results from the bond relaxation in the skin region.
- Δω(T) results in the atomic cohesive energy and Debye temperature.
- Δω(z) leads to the bond nature index and the reference ω from which the Δω proceeds.