Atomic-scale field-effect transistor as a thermoelectric power generator and self-powered device

Yu Shen Liu, Hsuan Te Yao, Yu-Chang Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Using first-principles approaches, we have investigated the thermoelectric properties and energy conversion efficiency of the paired metal-Br-Al junction. Owing to the narrow states in the vicinity of the chemical potential, the nanojunction has large Seebeck coefficients such that it can be considered an efficient thermoelectric power generator. We also consider the nanojunction in a three-terminal geometry, where the current, voltage, power, and efficiency can be efficiently modulated by the gate voltages. Such current-voltage characteristics could be useful in the design of nanoscale electronic devices such as a transistor or switch. Notably, the nanojunction as a transistor with a fixed finite temperature difference between electrodes can power itself using the Seebeck effect.

Original languageEnglish
Pages (from-to)14988-14996
Number of pages9
JournalJournal of Physical Chemistry C
Volume115
Issue number30
DOIs
StatePublished - 4 Aug 2011

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