Enhancement of thermoelectric properties by Na doping in Te-free p-type AgSbSe2

Cai Songting; Liu Zihang; Sun JianyongLi RuiFei WeidongSui Jiehe

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Enhancement of thermoelectric properties by Na doping in Te-free p-type AgSbSe2

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摘要

AgSbSe2 possesses extremely low thermal conductivity and high Seebeck coefficient, but the low electronic conductivity leads to a low ZT value. In this paper, Na is used to substitute Sb to improve the electronic conductivity. The results show that Na doping not only improves the power factor caused by the enhanced carrier concentration, but also decreases the thermal conductivity due to point defects, nanoscale stacking faults and Na-rich precipitate. Consequently, a high ZT value of 0.92 is achieved in the AgSb0.99Na0.01Se2 sample.

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《Dalton transactions: An international journal of inorganic chemistry》 |2015年第3期|1046-1051|共6页
作者
Cai Songting; Liu Zihang; Sun JianyongLi RuiFei WeidongSui Jiehe;
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作者单位

Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China;

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正文语种英语
中图分类化学;无机化学;
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Enhancement of thermoelectric properties by Na doping in Te-free p-type AgSbSe2

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