DOI: 10.1039/d6cp02218a ISSN: 1463-9076
Dual-phonon transport and mean-free-path filtering in PbBi 2 S 4 thermoelectric compound
Peng Ai, Liqing Xu, Wei Liu, Xinxiu Cheng, Zhanxiang Yin, Haoyu Zhang, Mengyuan Zhou, Yu XiaoSymmetry breaking induced by lone-pair electrons (LPEs) contributes to the intrinsically low lattice thermal conductivity of the PbBi 2 S 4 compound with a weakly disordered crystal structure.