GSTDTAP  > 气候变化
DOI10.1126/science.abi8668
Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments
Bingchao Qin; Dongyang Wang; Xixi Liu; Yongxin Qin; Jin-Feng Dong; Jiangfan Luo; Jing-Wei Li; Wei Liu; Gangjian Tan; Xinfeng Tang; Jing-Feng Li; Jiaqing He; Li-Dong Zhao
2021-07-30
发表期刊Science
出版年2021
英文摘要Thermoelectric materials can convert heat into electricity or be used as the basis of cooling devices. Qin et al. found that doping a tin selenide thermoelectric material with lead and sodium improved the room temperature thermoelectric properties, an effect created by manipulation of the electronic bands. The authors showed that the material could be used not only for power generation but also cooling. If optimal contact materials are identified, then this approach may be attractive for future applications. Science , abi8668, this issue p. [556][1] Thermoelectric materials transfer heat and electrical energy, hence they are useful for power generation or cooling applications. Many of these materials have narrow bandgaps, especially for cooling applications. We developed SnSe crystals with a wide bandgap ( E g ≈ 33 k B T ) with attractive thermoelectric properties through Pb alloying. The momentum and energy multiband alignments promoted by Pb alloying resulted in an ultrahigh power factor of ~75 μW cm–1 K–2 at 300 K, and an average figure of merit ZT of ~1.90. We found that a 31-pair thermoelectric device can produce a power generation efficiency of ~4.4% and a cooling Δ T max of ~45.7 K. These results demonstrate that wide-bandgap compounds can be used for thermoelectric cooling applications. [1]: /lookup/doi/10.1126/science.abi8668
领域气候变化 ; 资源环境
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/335540
专题气候变化
资源环境科学
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GB/T 7714
Bingchao Qin,Dongyang Wang,Xixi Liu,et al. Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments[J]. Science,2021.
APA Bingchao Qin.,Dongyang Wang.,Xixi Liu.,Yongxin Qin.,Jin-Feng Dong.,...&Li-Dong Zhao.(2021).Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments.Science.
MLA Bingchao Qin,et al."Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments".Science (2021).
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