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Modulated Thermoelectric Properties of Organic Semiconductors Using Field-Effect Transistors.
- Source :
- Advanced Functional Materials; May2015, Vol. 25 Issue 20, p3004-3012, 9p
- Publication Year :
- 2015
-
Abstract
- Organic thermoelectric materials, which can transform heat flow into electricity, have great potential for flexible, ultra-low-cost and large-area thermoelectric applications. Despite rapid developments of organic thermoelectric materials, exploration and investigation of promising organic thermoelectric semiconductors still remain as a challenge. Here, the thermoelectric properties of several p- and n-type organic semiconductors are investigated and studied, in particular, how the electric field modulations of the Seebeck coefficient in organic field-effect transistors (OFETs) compare with the Seebeck coefficient in chemically doped films. The extracted relationship between the Seebeck coefficient ( S) and electrical conductivity ( σ) from the field-effect transistor (FET) geometry is in good agreement with that of chemically doped films, enabling the investigation of the trade-off relationship among σ, S, carrier concentration, and charging level. The results make OFETs an effective candidate for the thermoelectric studies of organic semiconductors. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1616301X
- Volume :
- 25
- Issue :
- 20
- Database :
- Complementary Index
- Journal :
- Advanced Functional Materials
- Publication Type :
- Academic Journal
- Accession number :
- 102856431
- Full Text :
- https://doi.org/10.1002/adfm.201404397