中国物理B ›› 2017, Vol. 26 ›› Issue (9): 97201-097201.doi: 10.1088/1674-1056/26/9/097201
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
Pengfei Luo(罗鹏飞), Li You(游理), Jiong Yang(杨炯), Juanjuan Xing(邢娟娟), Jiye Zhang(张继业), Chenyang Wang(王晨阳), Xinluo Zhao(赵新洛), Jun Luo(骆军), Wenqing Zhang(张文清)
Pengfei Luo(罗鹏飞)1,2, Li You(游理)3, Jiong Yang(杨炯)2, Juanjuan Xing(邢娟娟)3, Jiye Zhang(张继业)3, Chenyang Wang(王晨阳)3, Xinluo Zhao(赵新洛)1, Jun Luo(骆军)3, Wenqing Zhang(张文清)2,3
摘要:
CuIn1-xMnxTe2 samples have been synthesized by a melt-annealing method. The x-ray powder diffraction (XRD) analysis shows that the CuIn1-xMnxTe2 samples crystallize in the chalcopyrite phase. Mn doping can effectively optimize the electrical properties and accordingly improve the power factor. The room temperature electrical conductivity of doped CuInTe2 increases by several orders of magnitude due to substituting In with Mn. In addition, a large reduction in thermal conductivity is achieved through the enhanced phonon scattering via Mn-related point defects and precipitates. Therefore, an enhanced average ZT value up to 0.34 is achieved for sample CuIn0.925Mn0.075Te2, which is 41% higher than that of the pristine CuInTe2.
中图分类号: (Thermoelectric and thermomagnetic effects)