Hannah, Daniel C. Ithurria, Sandrine Krylova, Galyna Talapin, Dmitri V. Schatz, George C. Schaller, Richard D. Particle-Level Engineering of Thermal Conductivity in Matrix-Embedded Semiconductor Nanocrystals Known manipulations of semiconductor thermal transport properties rely upon higher-order material organization. Here, using time-resolved optical signatures of phonon transport, we demonstrate a “bottom-up” means of controlling thermal outflow in matrix-embedded semiconductor nanocrystals. Growth of an electronically noninteracting ZnS shell on a CdSe core modifies thermalization times by an amount proportional to the overall particle radius. Using this approach, we obtain changes in effective thermal conductivity of up to 5× for a nearly constant energy gap. CdSe core;Semiconductor;particle radius;conductivity;phonon transport;semiconductor;outflow;approach;Thermal Conductivity;thermalization times;material;NanocrystalsKnown;transport properties;manipulation;energy gap;nanocrystal;noninteracting ZnS shell 2012-11-14
    https://acs.figshare.com/articles/journal_contribution/Particle_Level_Engineering_of_Thermal_Conductivity_in_Matrix_Embedded_Semiconductor_Nanocrystals/2469304
10.1021/nl303109r.s001