Phonon Scattering in Silicon by Multiple Morphological Defects: A Multiscale Analysis
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Electronic Materials"
DOI: 10.1007/s11664-018-6337-z
Abstract: Ideal thermoelectric materials should possess low thermal conductivity $$\kappa $$κ along with high electrical conductivity $$\sigma $$σ. Thus, strategies are needed to impede the propagation of phonons mostly responsible for thermal conduction while only marginally… read more here.
Keywords: scattering silicon; multiple morphological; thermal conductivity; phonon scattering ... See more keywords
Electron–Phonon Scattering in AlAs and Its Response to Hydrostatic Pressure
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Electronic Materials"
DOI: 10.1007/s11664-018-6651-5
Abstract: We perform first principles calculations to predict the electron–phonon (e–ph) scattering rates in AlAs and their dependence on phonon modes at energies close to the conduction band minima (CBM), as well as high into the… read more here.
Keywords: pressure; electron phonon; phonon; phonon scattering ... See more keywords
Nanoarchitectured titanium complexes for thermal mitigation in thermoelectric materials
Sign Up to like & getrecommendations! Published in 2019 at "Renewable and Sustainable Energy Reviews"
DOI: 10.1016/j.rser.2018.10.006
Abstract: Abstract One of the key barriers to commercial development of thermoelectric materials for conversion of heat into electricity is the issue of thermal transport, which diminishes the temperature gradient needed for sustaining the thermoelectric conversion… read more here.
Keywords: phonon scattering; titanium; thermoelectric materials; thermal conductivity ... See more keywords
Anisotropic Phonon Scattering and Thermal Transport Property Induced by the Liquid-like Behavior of AgCrSe2.
Sign Up to like & getrecommendations! Published in 2023 at "Nano letters"
DOI: 10.1021/acs.nanolett.3c00680
Abstract: Superionic conductors exhibiting a periodic crystalline lattice and liquid-like ionic conductivity have emerged as promising materials in energy-conversion devices. Herein, we have investigated the interplay among anharmonic lattice dynamics, thermal conduction, and ultrafast atomic diffusion… read more here.
Keywords: phonon scattering; liquid like; phonon; anisotropic phonon ... See more keywords
Direct Visualization of Thermal Conductivity Suppression Due to Enhanced Phonon Scattering Near Individual Grain Boundaries.
Sign Up to like & getrecommendations! Published in 2018 at "Nano letters"
DOI: 10.1021/acs.nanolett.8b00534
Abstract: Understanding the impact of lattice imperfections on nanoscale thermal transport is crucial for diverse applications ranging from thermal management to energy conversion. Grain boundaries (GBs) are ubiquitous defects in polycrystalline materials, which scatter phonons and… read more here.
Keywords: thermal conductivity; phonon scattering; grain; grain boundaries ... See more keywords
Effect of Half-Heusler Interfacial Structure on Thermal Transport Properties of (Ti, Zr)NiSn Alloys.
Sign Up to like & getrecommendations! Published in 2021 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.1c03525
Abstract: The microstructure of the half-Heusler phase separation in half-Heusler (HH) MNiSn(M = Ti, Zr) intermetallic compounds has been investigated systematically in this study. Scanning electron microscopy observations from a range of (Tix, Zr1-x)NiSn have revealed… read more here.
Keywords: effect half; half; half heusler; phonon scattering ... See more keywords
Deconvolution of Phonon Scattering by Ferroelectric Domain Walls and Point Defects in a PbTiO3 Thin Film Deposited in a Composition-Spread Geometry.
Sign Up to like & getrecommendations! Published in 2021 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.1c08758
Abstract: We present a detailed analysis of the temperature dependence of the thermal conductivity of a ferroelectric PbTiO3 thin film deposited in a composition-spread geometry enabling a continuous range of compositions from ∼25% titanium deficient to… read more here.
Keywords: geometry; point defects; thin film; phonon scattering ... See more keywords
Four-Phonon Scattering Effect and Two-Channel Thermal Transport in Two-Dimensional Paraelectric SnSe.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.1c24488
Abstract: In recent years, increased attention has been paid to the study of four-phonon interactions and diffusion transport in three-dimensional (3D) thermoelectric materials because they play an essential role in understanding the thermal transport process. In… read more here.
Keywords: phonon scattering; four phonon; transport two; phonon ... See more keywords
Room-Temperature Thermoelectric Performance of n-Type Multiphase Pseudobinary Bi2Te3–Bi2S3 Compounds: Synergic Effects of Phonon Scattering and Energy Filtering
Sign Up to like & getrecommendations! Published in 2023 at "ACS Applied Materials & Interfaces"
DOI: 10.1021/acsami.3c01956
Abstract: Bismuth telluride-based alloys possess the highest efficiencies for the low-temperature-range ( read more here.
Keywords: phonon scattering; multiphase; temperature; bi2te3 ... See more keywords
Understanding Phonon Scattering by Nanoprecipitates in Potassium-Doped Lead Chalcogenides.
Sign Up to like & getrecommendations! Published in 2017 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.6b14266
Abstract: 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… read more here.
Keywords: nanoprecipitates potassium; scattering nanoprecipitates; potassium doped; phonon scattering ... See more keywords
Narrow Intrinsic Line Widths and Electron-Phonon Coupling of InP Colloidal Quantum Dots.
Sign Up to like & getrecommendations! Published in 2023 at "ACS nano"
DOI: 10.1021/acsnano.2c10237
Abstract: InP quantum dots (QDs) are the material of choice for QD display applications and have been used as active layers in QD light-emitting diodes (QDLEDs) with high efficiency and color purity. Optimizing the color purity… read more here.
Keywords: phonon scattering; quantum dots; line widths; qds ... See more keywords