Silicon: a Revenant Thermoelectric Material?
Silicon: a Revenant Thermoelectric Material?
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硅:一种复活的热电材料?
DOI:
10.1007/s10948-019-05268-5
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发表时间:
2020
影响因子:
1.8
通讯作者:
Lee, Mark
中科院分区:
文献类型:
--
作者:
Lee, Mark
Before entering the world of superconductivity, Ted Geballe, in the 1950s, investigated the thermoelectric (TE) properties of doped crystalline silicon. Ted’s results indicated that Si has very poor thermoelectric properties, primarily because near room temperature most of the heat transport through Si is carried via phonons rather than electrons and holes. These findings ended the role of Si in TE technologies for a half-century. A decade ago, it was proposed that Si in nanowire form can have good TE properties owing to suppression of phonon heat transport by surface scattering. However, no TE device made of Si nanowires has shown useful performance characteristics. Here, we present work showing integrated circuit Si TE generators that can generate power per unit area per applied temperature difference that is competitive with the best existing TE technologies using more exotic TE materials. Our devices surpass previous Si TE work not by increasing silicon’s intrinsic TE efficiency but by exploiting modern Si processing technology to fabricate a very large number of heat harvesters per unit area. While Ted’s old work buried Si in the TE world, our results may resurrect it as a viable TE material.
影响因子:
34.3
作者:
Hu, Gangyi;Edwards, Hal;Lee, Mark
通讯作者:
Lee, Mark
影响因子:
3.1
作者:
M. Tomita;S. Oba;Y. Himeda;R. Yamato;K. Shima;T. Kumada;Mao Xu;H. Takezawa;K. Mesaki;K. Tsuda;S. Hashimoto;T. Zhan;Hui Zhang;Y. Kamakura;Yuhhei Suzuki;H. Inokawa;H. Ikeda;T. Matsukawa;T. Matsuki;Takanobu Watanabe
通讯作者:
Takanobu Watanabe