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Strategies for optimizing the thermoelectricity of PbTe alloys
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作者 王腾 +4 位作者 王洪超 苏文斌 王雪 陈婷婷 王春雷 《中国物理B:英文版》 SCIE EI CAS CSCD 2018年第4期27-38,共12页
关键词 PBTE 热电 优化 合金 发电技术 中间温度 候选人 碲化物
Thermoelectric properties of Li-doped Sr0.7Ba0.3Nb2O6-δ ceramics
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作者 张亚翠 刘剑 +7 位作者 李宜 陈宇飞 李吉超 苏文斌 周昱成 王腾 王春雷 《中国物理B:英文版》 SCIE EI CAS CSCD 2017年第10期423-427,共5页
Thermoelectric properties of Li-dopedSr_(0.7)Ba_(0.3)Nb_2O_(6-δ)ceramics were investigated in the temperature range from 323 K to 1073 K. The electrical conductivity increases significantly after lithium interstitial... Thermoelectric properties of Li-dopedSr_(0.7)Ba_(0.3)Nb_2O_(6-δ)ceramics were investigated in the temperature range from 323 K to 1073 K. The electrical conductivity increases significantly after lithium interstitial doping. However, both of the magnitudes of Seebeck coefficient and electrical conductivity vary non-monotonically but synchronously with the doping contents, indicating that doped lithium ions may not be fully ionized and oxygen vacancy may also contribute to carriers. The lattice thermal conductivity increases firstly and then decreases as the doping content increases, which is affected by competing factors.Thermoelectric performance is enhanced by lithium interstitial doping due to the increase of the power factor and the thermoelectric figure of merit reaches maximum value(0.21 at 1073 K) in the sample Sr_(0.70)Ba_(0.30)Li_(0.10)Nb_2O_6. 展开更多
关键词 热电性能 掺杂量 陶瓷 晶格热导率 温度范围 离子掺杂 竞争因素 热电优值
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