The thermoelectric Seebeck and Peltier effects of a single walled carbon nanotube (SWCNT)
quantum dot nanodevice are investigated, taking into consideration a certain value of applied
tensile strain and induced ac-field with frequency in the terahertz (THz) range. This device
is modeled as a SWCNT quantum dot connected to metallic leads. These two metallic leads
operate as a source and a drain. In this three-terminal device, the conducting substance is
the gate electrode. Another metallic gate is used to govern the electrostatics and the switch-
ing of the carbon nanotube channel. The substances at the carbon nanotube quantum dot/
metal contact are controlled by the back gate. Results show that both the Seebeck and Peltier
coefficients have random oscillation as a function of gate voltage in the Coulomb blockade
regime for all types of SWCNT quantum dots. Also, the values of both the Seebeck and Pel-
tier coefficients are enhanced, mainly due to the induced tensile strain. Results show that the
three types of SWCNT quantum dot are good thermoelectric nanodevices for energy |
