Songhao Li, Xin Zhang, Hongliang Liu, Zheng Yong Liang, Jiuxing Zhang
Abstract
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且第二相含量逐渐增加。 掺杂 Ag 大幅度提高了载流子浓度, 从而使材料的综合电输运性能(功率因子)显著提高, 当 Ag 掺杂量 x=0.02 时, 功率因子提高至 4.95×10 -4 W/(m•K 2 ), 较未 掺杂 SnSe 样品提高了 36%。尽管掺杂样品的热导率均有小幅升高, 无量纲热电优值(ZT)仍获得一定改善。当 Ag 掺杂量 x=0.02 时, Sn 0.98 Ag 0.02 Se 成分样品具有较高的热电优值, 并在 823 K 附近达到最高值 0.
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且第二相含量逐渐增加。 掺杂 Ag 大幅度提高了载流子浓度, 从而使材料的综合电输运性能(功率因子)显著提高, 当 Ag 掺杂量 x=0.02 时, 功率因子提高至 4.95×10 -4 W/(m•K 2 ), 较未 掺杂 SnSe 样品提高了 36%。尽管掺杂样品的热导率均有小幅升高, 无量纲热电优值(ZT)仍获得一定改善。当 Ag 掺杂量 x=0.02 时, Sn 0.98 Ag 0.02 Se 成分样品具有较高的热电优值, 并在 823 K 附近达到最高值 0.
Key concepts: Materials science, Thermoelectric effect, Doping, Thermoelectric materials, Engineering physics, Metallurgy, Optoelectronics, Composite material