Year: 2020
Type: article
Abstract: We theoretically investigate the effect of nanoparticle(NP) inclusion on the lattice thermal conductivity (κ l ) of SnSe matrix. The theoretical approach involves the prediction of κ l by varying the radius (R), density (D 1), and volume fraction (ε) of NP in SnSe matrix. NP has strong anisotropic effect on the lattice thermal conductivity reduction along the crystallographic direction. We observe the existence of an optimal NP volume fraction that minimizes the nanocomposite's thermal conductivity. At room temperature, this value is found to be ε = 0.317 for which lattice thermal conductivity reduces by 35% with NP (R = 5 nm) compared to pure SnSe. An enhancement in the figure of merit (ZT) around room temperature opens up new opportunities for thermoelectric power generation at moderate temperatures. Even larger enhancement is possible in polycrystalline SnSe which will be helpful for thermoelectric devices.
Source: Nano Express
Authors: Raveena Gupta, Chandan Bera
Institutions: Institute of Nano Science and Technology, Panjab University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,185
Awards: G4979640336, G5158263966, G8572416517
OpenAlex ID: W3111360880