High thermoelectric performance in n-type BiAgSeS due to intrinsically low thermal conductivity
High thermoelectric performance in n-type BiAgSeS due to intrinsically low thermal conductivity
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DOI：
10.1039/c3ee40879e
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发表时间：
2013-05
影响因子：
32.5
通讯作者：
Y. Pei;Haijun Wu;J. Sui;Jing Li;D. Bérardan;C. Barreteau;Lin Pan;N. Dragoe;Weishu Liu;
中科院分区：
文献类型：
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作者：
Y. Pei;Haijun Wu;J. Sui;Jing Li;D. Bérardan;C. Barreteau;Lin Pan;N. Dragoe;Weishu Liu;
BiAgSeS在300K(∼0.46W m−1K−1)到823K(∼0.29W m−1K−1)的温度范围内表现出很低的导热系数。通过用ClBiAgSeS0.97Cl0.03部分取代S2−，获得了较低的导热系数和较强的电输运性能，使BiAgSeS0.97Cl0.03在823K有较高的ZT值，表明−体系在热电发电领域具有广阔的应用前景。
BiAgSeS shows intrinsically low thermal conductivity in the temperature range from 300 K (∼0.46 W m−1 K−1) to 823 K (∼0.29 W m−1 K−1). Low thermal conductivity coupling with enhanced electrical transport properties achieved through partially substituting S2− by Cl− leads to a high ZT of ∼1.0 at 823 K for BiAgSeS0.97Cl0.03, indicating that the BiAgSeS system is promising for thermoelectric power generation applications.