Enhancing the thermoelectric properties of low-dimensional materials

增强低维材料的热电性能

• 批准号: 18J10151
• 负责人: NGUYEN Tuan Hung
• 金额: $ 0.96万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-04-25 至 2020-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18J10151/
• 关键词: Thermoelectricity; DFT calculation; 2D materials

In the fiscal year FY2018, we theoretically investigated the thermoelectric properties of a series of two-dimensional (2D) materials such as 2D InSe and 2D tetradymites Bi2X3 (X= Te, Se, S). We have proposed a series of new mechanisms to improve the power factor and figure of merit ZT of the 2D materials. For example, the band engineering to converge the valence (or conduction) bands to achieve high valley degeneracy, which showed a strategy in designing thermoelectric materials with an extremely high power factor. The band converge is achieved in the 2D InSe and 2D tetradymites by applying strain and selecting the atom compounds, respectively. ZT also is improved by decreasing the thermal conductivity of 2D materials with heavy atomic masses.

在2018财年，我们从理论上研究了一系列二维（2D）材料的热电性能，如2D InSe和2D碲铋矿Bi2X3（X= Te，Se，S）。我们提出了一系列新的机制来提高二维材料的功率因数和品质因数ZT。例如，带工程收敛的价带（或导带），以实现高谷简并，这表明在设计具有极高的功率因数的热电材料的策略。分别通过施加应变和选择原子化合物，实现了二维InSe和二维辉碲铋矿的能带会聚。ZT还通过降低具有重原子质量的2D材料的热导率来改善。

项目成果

Improving thermoelectric performance of monolayer semiconductors beyond the confinement effect

超越限制效应提高单层半导体的热电性能

• 发表时间: 2018
• 作者: Quang Duc Truong;Nguyen T. Hung;Yuta Nakayasu; Keiichiro Nayuki;Yo-shikazu Sasaki;Murukanahally Kempaiah Devaraju;Li-Chang Yin;Takaaki Tomai;Riichiro Saito; Itaru Honma;Nguyen Tuan Hung;Nguyen Tuan Hung
• 通讯作者: Nguyen Tuan Hung

Mo3S11 polymer as high capacity anion redox electrodes for sodium-ion battery

Mo3S11聚合物作为钠离子电池高容量阴离子氧化还原电极

• 发表时间: 2018
• 作者: Quang Duc Truong;Nguyen T. Hung;Yuta Nakayasu; Keiichiro Nayuki;Yo-shikazu Sasaki;Murukanahally Kempaiah Devaraju;Li-Chang Yin;Takaaki Tomai;Riichiro Saito; Itaru Honma;Nguyen Tuan Hung
• 通讯作者: Nguyen Tuan Hung

Tunable circular dichroism and valley polarization in the modified Haldane model

• DOI: 10.1103/physrevb.99.161404
• 发表时间: 2019-02
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Marc Vilà;N. T. Hung;S. Roche;R. Saito

Thermoelectric performance of monolayer InSe improved by convergence of multivalley bands

• DOI: 10.1063/1.5040752
• 发表时间: 2019-02-28
• 期刊: JOURNAL OF APPLIED PHYSICS
• 影响因子: 3.2
• 作者: Hung, Nguyen T.;Nugraha, Ahmad R. T.;Saito, Riichiro
• 通讯作者: Saito, Riichiro

Molybdenum sulfide polymer with high capacity for sodium-ion battery

钠离子电池用高容量硫化钼聚合物

• 发表时间: 2018
• 作者: Quang Duc Truong;Nguyen T. Hung;Yuta Nakayasu; Keiichiro Nayuki;Yo-shikazu Sasaki;Murukanahally Kempaiah Devaraju;Li-Chang Yin;Takaaki Tomai;Riichiro Saito; Itaru Honma;Nguyen Tuan Hung;Nguyen Tuan Hung;Nguyen Tuan Hung
• 通讯作者: Nguyen Tuan Hung