Work

Magneto-Seebeck effect in an ITO/PEDOT:PSS/Au thin-film device

Year: 2016

Type: article

Abstract: This article reports giant magnetic field effects on the Seebeck coefficient by exerting a Lorentz force on charge diffusion based on vertical multi-layer ITO/PEDOT:PSS/Au thin-film devices. The Lorentz force, induced by an external magnetic field, changes the charge transport and consequently generates angular dependent magnetoresistance. The proposed mechanism of the magneto-Seebeck effect is proved by measuring the magnetoresistance at a parallel, 45o and perpendicular angle to the temperature gradient. The gradual change of the magnetoresistance from a parallel to perpendicular angle indicates that the Lorentz force is a key driving force to develop the magneto-Seebeck effect. Therefore, our experimental results demonstrate a magnetic approach to control the thermoelectric properties in organic materials.

Source: AIP Advances

DOI: 10.1063/1.4947122

Authors: Hongfeng Wang, Qing Liu, Jeremy Tisdale, Ling Xu, Yuchun Liu, Bin Hu

Institutions: Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, University of Tennessee at Knoxville

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,350

Funders: National Science Foundation, National Natural Science Foundation of China, Division of Chemical, Bioengineering, Environmental, and Transport Systems, Air Force Office of Scientific Research