title: Spectroscopic determination of phonon lifetimes in rhenium-doped MoS2 nanoparticles.
abstract: We investigated the infrared vibrational properties of pristine and Re-substituted MoS2 nanoparticles and analyzed the extracted phonon lifetimes in terms of multiple scattering events. Our measurements reveal both size- and doping-dependent changes that we attribute to grain boundary scattering and charge and mass effects, respectively. By contrast, Born charge is affected only by size. These findings illustrate the utility of reaching beyond traditional bulk semiconductors and quantum dots to explore how doping and confinement impact carrier-phonon interactions in low-dimensional semiconducting nanomaterials.
authors.affiliation: Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA.
authors.forename: Qi -C
authors.initials: Q-
authors.lastname: Sun
authors.forename: Dipanjan
authors.initials: D
authors.lastname: Mazumdar
authors.forename: Lena
authors.initials: L
authors.lastname: Yadgarov
authors.forename: Rita
authors.initials: R
authors.lastname: Rosentsveig
authors.forename: Reshef
authors.initials: R
authors.lastname: Tenne
authors.forename: Janice L
authors.initials: JL
authors.lastname: Musfeldt