Covalent coupling of DNA bases with graphene nanoribbon electrodes: Negative differential resistance, rectifying,and thermoelectric performance?

• 作者: Meng-Qiu Long Peng-Peng Zhang Shi-Hua Tan Xiao-Fang Peng
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2020,（10）
• 所属期刊栏目: CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES
• 页码范围: 512-522
• 页数: 11页
• 语种: 英文
• DOI: 10.1088/1674-1056/aba9bf

摘要

By applying nonequilibrium Green's functions in combination with the density-functional theory, we investigate the electronic, thermal, and thermoelectric properties of four kinds of bases in DNA perpendicularly coupling between two ZGNR electrodes. The results show that the electron transport is highly sensitive to different base-ZGNR coupling geome-tries, and the system can present large rectifying and negative differential resistance effects. Moreover, the fluctuations of electronic transmission and super-low thermal conductance result in significant enhancement of the thermoelectric figure of merit (ZT): the ZT will be over 1.4 at room temperature, and over 1.6 at 200 K. The results show that the base-ZGNR coupling devices can present large rectifying, negative differential resistance, and enhanced thermoelectric effects.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Peng-Peng Zhang		1	0	0.0	0.0
2	Shi-Hua Tan		1	0	0.0	0.0
3	Xiao-Fang Peng		1	0	0.0	0.0
4	Meng-Qiu Long		1	0	0.0	0.0