Work

Thermopower Peculiarities of Uniaxial-Strained Bismuth Nanowires

Year: 2014

Type: article

Abstract: We present the results of the investigations of the thermopower and electrical resistance of Pyrex-coated Bi nanowires. Here we show that there is a critical thickness of wire below which structural defects can strongly influence the charge transport in Bi nanowires, fabricated by the melt spinning method. At low temperature the contribution of holes to the thermopower dominates the electron contribution. Thermoelectric parameters of Bi nanowires may be controlled by applying a thermal treatment and/or a uniaxial pressure. A fairly high value of thermoelectric power factor was found under strain in the temperature range of 80–300 K, where the dominant mechanism contributing to the thermopower is diffusive thermoelectric generation with electrons as the majority carrier.

Source: Journal of Low Temperature Physics

DOI: 10.1007/s10909-013-1077-1

Authors: E. Condrea, A. Nicorici, A. Gilewski, S. Matyjasik

Institutions: Academy of Sciences of Moldova, International Laboratory of High Magnetic Fields and Low Temperatures

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $3,390