期刊论文

Jia, PZ;Zhou, WX

英文

International Journal of Heat and Mass Transfer

0017-9310

2025

236

126364

10.1016/j.ijheatmasstransfer.2024.126364

CRediT authorship contribution statement Xue-Kun Chen: Writing – original draft, Methodology, Investigation, acquisition, Conceptualization. Yue Zhang: Validation, Software, Investigation, Formal analysis. Qing-Qing Luo: Validation, Methodology, Investigation. Pin-Zhen Jia: Supervision, Project administration, acquisition. Wu-Xing Zhou: Writing – original draft, Visualization, Methodology, acquisition, Conceptualization.

本校为第一机构

Acoustic phonons have long been believed to dominate the lattice thermal conductivity ( κ l ) and the contribution of optical phonons can be neglected in crystal structures. KCaBi, as a high-throughput screening semiconductor with ultralow κ l [J. Am. Chem. Soc. 144, 4448 (2022)], has been demonstrated that the contribution of optical phonons plays an important role in thermal transport. In this work, by solving the Boltzmann transport equation, it is found that the κ l of KCaBi is 2.2 at 300K, with acoustic phonons dominating the z-directio...