Abstract
Motivated by the excellent electronic and optoelectronic properties of two-dimensional (2D) tin oxides, we systematically investigated the thermal conductivity (κ) of monolayers SnO and SnO2 by the first-principles calculations. The room-temperature κ of monolayers SnO and SnO2 reaches 9.6 W/(m K) and 98.8 W/(m K), respectively. The size effect is much weaker for monolayer SnO than for monolayer SnO2, due to the coexistence of size dependent and independent components in the κ value of monolayer SnO. The large difference between the κ values of 2D tin oxides can be attributed to the small phonon group velocity and strong anharmonicity strength of monolayer SnO. Further electronic structure analysis reveals that the existence of sterically active lone-pair electrons is the key factor for the small κ value of monolayer SnO. These results provide a guide for the manipulation of thermal transport in electronic or thermoelectric devices based on 2D tin oxides.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
