Haiyan Xiao was supported by the NSAF Joint Foundation of China(Grant No.U1930120);Liang Qiao was supported by National Natural Science Foundation of China(Grant No.11774044,52072059);Zhibin Gao acknowledges the financial support from MOE tier 1 funding of NUS Faculty of Science,Singapore(Grant No.R-144-000-402-114);The theoretical calculations are performed using the supercomputer resources at TianHe-1 located at National Supercomputer Center in Tianjin.
Band degeneracy is effective in optimizing the power factors of thermoelectric(TE)materials by enhancing the Seebeck coefficients.In this study,we demonstrate this effect in model systems of layered oxyselenide family...