Experimental evidence of a size-dependent sign change of the Seebeck coefficient of Bi nanowire arrays.

ABSTRACT: The electrical transport in bismuth nanowires is strongly influenced by both sample geometry and crystallinity. Compared to bulk bismuth, the electrical transport in nanowires is dominated by size effects and influenced by surface states, which gain increasing relevance with increasing surface-to-volume ratios, i.e. with decreasing wire diameter. Bismuth nanowires with tailored diameter and crystallinity constitute, therefore, excellent model systems, allowing to study the interplay of the different transport phenomena. Here, we present temperature-dependent Seebeck coefficient and relative electrical resistance measurements of parallel bismuth nanowire arrays with diameters between 40 and 400 nm synthesized by pulsed electroplating in polymer templates. Both electrical resistance and Seeb

SUBMITTER: Wagner MFP 

PROVIDER: S-EPMC10203367 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature