Research ArticlePHYSICAL SCIENCES

Semiconductor glass with superior flexibility and high room temperature thermoelectric performance

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Science Advances  10 Apr 2020:
Vol. 6, no. 15, eaaz8423
DOI: 10.1126/sciadv.aaz8423
  • Fig. 1 Room temperature mechanical properties of the Ag2Te1–xSx samples (x = 0.1, 0.2, 0.3, 0.4).

    (A to C) Strain-stress curves for bending (A), compression (B), and tensile tests (C). (D) Vickers hardness. Typical materials are shown for comparison (8,16,17,22,23,2429).

  • Fig. 2 Microstructure of the Ag2Te0.6S0.4 sample.

    (A) SEM image of the fracture morphology showing vein-like structure. (B) SEM image of the surface of Ag2Te0.6S0.4 showing crossing shear bands. (C) TEM image showing crystallites embedded in the amorphous matrix. (D) TEM image of pure amorphous phase region and the corresponding SAED pattern. (E) HRTEM image showing a typical crystallite in the amorphous matrix. (F) Corresponding SAED pattern of (E). (G) Room temperature XRD patterns. (H) Heat flow curves. a.u., arbitrary units.

  • Fig. 3 Electrical transport properties of the Ag2Te1–xSx samples (x = 0.1, 0.2, 0.3, 0.4).

    (A) Temperature-dependent Hall mobility and (B) carrier concentration. (C) Room temperature Hall mobility in comparison with typical amorphous materials (3640). (D) Room temperature power factor as a function of electrical conductivity for Ag2Te0.6S0.4 and typical amorphous materials (4348).

  • Fig. 4 Temperature-dependent thermoelectrical properties of the Ag2Te1–xSx samples (x = 0.1, 0.2, 0.3, 0.4).

    (A) Total thermal conductivity. (B) zT value.

Supplementary Materials

  • Supplementary Materials

    Semiconductor glass with superior flexibility and high room temperature thermoelectric performance

    Shiyang He, Yongbo Li, Lu Liu, Ying Jiang, Jingjing Feng, Wei Zhu, Jiye Zhang, Zirui Dong, Yuan Deng, Jun Luo, Wenqing Zhang, Gang Chen

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