2 research outputs found
Supplementary document for Dual-coupling effect enables a high-performance self-powered UV Photodetector - 6823938.pdf
Important supplementary material in manuscrip
Understanding Phonon Scattering by Nanoprecipitates in Potassium-Doped Lead Chalcogenides
We
present a comprehensive experimental and theoretical study of phonon
scattering by nanoprecipitates in potassium-doped PbTe, PbSe, and
PbS. We highlight the role of the precipitate size distribution measured
by microscopy, whose tuning allows for thermal conductivities lower
than the limit achievable with a single size. The correlation between
the size distribution and the contributions to thermal conductivity
from phonons in different frequency ranges provides a physical basis
to the experimentally measured thermal conductivities, and a criterion
to estimate the lowest achievable thermal conductivity. The results
have clear implications for efficiency enhancements in nanostructured
bulk thermoelectrics