n-type Bi-doped PbTe Nanocubes with Enhanced Thermoelectric Performance

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• 作者：Lei Yang^aAuthor Vitae ; Zhi-Gang Chen^a ; ^b ; ^{zhigang.chen@uq.edu.au}Author Vitae ; Min Hong^aAuthor Vitae ; Lihua Wang^cAuthor Vitae ; Deli Kong^cAuthor Vitae ; Liqing Huang^aAuthor Vitae ; Guang Han^aAuthor Vitae ; Yichao Zou^aAuthor Vitae ; Matthew Dargusch^a ; ^dAuthor Vitae ; Jin Zou^a ; ^e ; ^{j.zou@uq.edu.au}Author Vitae
• 关键词：Thermoelectric ; n-type ; Bi-doped PbTe ; Nanostructure Engineering
• 刊名：Nano Energy
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：31
• 期：Complete
• 页码：105-112
• 全文大小：1120 K
• 卷排序：31

文摘

Controlled synthesis of Bi-doped PbTe nanocubes with different Bi doping levels to tune the electrical transport properties. High density of grain boundaries and high density of dislocations within the grains provide full-length phonon scattering and lead to significantly reduced thermal conductivities. Secured a peak ZT of 1.35 at 675 K for the as-sintered Pb0.99Bi0.01Te pellet, which is one of the best n-type thermoelectric materials.