Facile preparation and thermoelectric properties of Bi₂Te₃ based alloy nanosheet/PEDOT:PSS composite films

Yong Du; K F Cai; Song Chen; Pavel Cizek; Tong Lin

doi:10.1021/am5002772

Facile preparation and thermoelectric properties of Bi₂Te₃ based alloy nanosheet/PEDOT:PSS composite films

ACS Appl Mater Interfaces. 2014 Apr 23;6(8):5735-43. doi: 10.1021/am5002772. Epub 2014 Apr 4.

Authors

Yong Du¹, K F Cai, Song Chen, Pavel Cizek, Tong Lin

Affiliation

¹ Functional Materials Research Laboratory, Tongji University , 4800 Caoan Road, Shanghai 201804, China.

PMID: 24666341
DOI: 10.1021/am5002772

Abstract

Bi2Te3 based alloy nanosheet (NS)/poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) composite films were prepared separately by spin coating and drop casting techniques. The drop cast composite film containing 4.10 wt % Bi2Te3 based alloy NSs showed electrical conductivity as high as 1295.21 S/cm, which is higher than that (753.8 S/cm) of a dimethyl sulfoxide doped PEDOT:PSS film prepared under the same condition and that (850-1250 S/cm) of the Bi2Te3 based alloy bulk material. The composite film also showed a very high power factor value, ∼32.26 μWm(-1) K(-2). With the content of Bi2Te3 based alloy NSs increasing from 0 to 4.10 wt %, the electrical conductivity and Seebeck coefficient of the composite films increase simultaneously.

Publication types

Research Support, Non-U.S. Gov't