Exciton interaction with acoustic phonons in PbS nanocrystals
M.O. Nestoklon, S.V. Goupalov
TL;DR
This paper investigates how excitons in PbS nanocrystals interact with acoustic phonons, analyzing size-dependent effects on vibrational modes using a theoretical ${f k} imes {f p}$ model.
Contribution
It provides a theoretical calculation of exciton-phonon interactions and size-dependent Huang-Rhys factors in PbS nanocrystals, focusing on specific vibrational modes.
Findings
Size-dependent Huang-Rhys factors for breathing mode and overtones
Interaction strength varies with nanocrystal size
Theoretical predictions align with experimental trends
Abstract
The interaction between exciton and acoustic phonons via deformation potential in PbS nanocrystals is calculated in the model. The size-dependence of the Huang-Rhys factors for the fundamental breathing mode and its overtones as well as for spheroidal vibrations with the total angular momentum are evaluated.
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