Research / 2020 / Article / Fig 6

Review Article

Defects Engineering with Multiple Dimensions in Thermoelectric Materials

Figure 6

Linear defects and related physical effect in thermoelectric materials. (a) Microstructures of Pb0.95Sb0.033Se solid solution showing the uniformly distributed dense dislocation [19]. Reproduced with permission from the Nature Publishing Group. (b) High-resolution annular bright field (ABF) STEM image of Pb0.95Sb0.033Se [19]. Reproduced with permission from the Nature Publishing Group. (c) Schematic diagram of the formation of in-grain dislocations induced by vacancy clustering in Pb1-SbSe [77]. Reproduced with permission from WILEY-VCH. (d) Temperature-dependent lattice thermal conductivity for Pb1-Sb2/3Se solid solution [19]. Reproduced with permission from the Nature Publishing Group. (e) Inverse FFT (IFFT) images of (-111) atomic plane of Sb-alloyed Mg2Si [21]. (f) Strain mapping of the HRTEM image along the direction in Sb-alloyed Mg2Si [21]. (g) Experimental data and calculated lattice thermal conductivity for Mg2Si1-Sb and Mg2Si1-Sn [21]. (h) Contribution of different phonon scattering mechanisms to the spectral thermal conductivity of the Mg2Si0.8Sb0.2 at room temperature [21]. Reproduced with permission from Elsevier Ltd.