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Advanced Materials最新综述：热电材料的能带设计
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本文为G. J. Snyder课题组在Advanced Materials刊发的综述，以铅的硫属化合物为代表，讨论了能带设计对热点性能的影响。文章11页，引文114篇。 Abstract Lead chalcogenides have long been used for space-based and thermoelectric remote power generation applications, but recent discoveries have revealed a much greater potential for these materials. This renaissance of interest combined with the need for increased energy efficiency has led to active consideration of thermoelectrics for practical waste heat recovery systems—such as the conversion of car exhaust heat into electricity. The simple high symmetry NaCl-type cubic structure, leads to several properties desirable for thermoelectricity, such as high valley degeneracy for high electrical conductivity and phonon anharmonicity for low thermal conductivity. The rich capabilities for both band structure and microstructure engineering enable a variety of approaches for achieving high thermoelectric performance in lead chalcogenides. This Review focuses on manipulation of the electronic and atomic structural features which makes up the thermoelectric quality factor. While these strategies are well demonstrated in lead chalcogenides, the principles used are equally applicable to most good thermoelectric materials that could enable improvement of thermoelectric devices from niche applications into the mainstream of energy technologies. .  nfig002.jpg [ 来自科研家族 材料家族 ] 本帖为早期发表，最新的资源贴请参照此标准：http://muchong.com/bbs/viewthread.php?tid=7505397&fpage=1 [ Last edited by 穿越千年 on 2015-10-25 at 09:53 ] |
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2012-10-17 16:55:36, 1.27 M
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