Fabrication of thermoelectric devices using precisely Fermi level-tuned semiconducting single-wall carbon nanotubes

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Precisely Fermi level-tuned one-dimensional materials have great potential for highly efficient thermoelectric devices. Here, we report continuous control of thermoelectric power using precisely Fermi level-tuned thermoelectric devices, in which P-type and N-type single-wall carbon nanotube networks are connected electrically in series and thermally in parallel. We fabricated thermoelectric devices with two channels using semiconducting single-wall carbon nanotubes and tuned the Seebeck polarity of one side to the N-type using electric double-layer carrier injections and then enhanced the thermoelectric power of the device by tuning the gate voltage.