A possibility to realize a high thermoelectric figure of merit in quasi-one-dimensional organic crystals

Author

Casian, A. ; Dashevsky, Z. ; Scherrer, H. ; Dusciac, V. ; Dusciac, R.

Author_Institution

Dept. of Comput., Informatics & Microelectron., Tech. Univ. of Moldova, Chisinau, Moldova

fYear

2003

fDate

17-21 Aug. 2003

Firstpage

330

Lastpage

335

Abstract

The thermoelectric opportunities of some highly conducting quasi-one dimensional (Q1D) organic crystals are studied theoretically. The electrical conductivity, Seebeck coefficient and electronic thermal conductivity are investigated as functions of crystal parameters. Obtained dependences are used to determine the optimal expected values of ZT at room temperature. The mechanism for ZT enhancement and the needed tuning of crystal parameters in order to maximize the enhancement are analyzed in detail. It is shown that due to the interference of two main electron-phonon interaction mechanisms, values as high as ZT ∼ 20 are possible both in nand p-type Q1D materials. Recommendations are elaborated for the realization of such materials.

Keywords

Seebeck effect; electron-phonon interactions; one-dimensional conductivity; organic compounds; thermal conductivity; thermoelectricity; Seebeck coefficient; crystal parameters; electron-phonon interaction mechanisms; electronic thermal conductivity; high thermoelectric figure of merit; quasi-one-dimensional organic crystals; Conducting materials; Crystalline materials; Crystals; Magneto electrical resistivity imaging technique; Microelectronics; Quantum dots; Semiconductor materials; Semiconductor superlattices; Thermal conductivity; Thermoelectricity;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermoelectrics, 2003 Twenty-Second International Conference on - ICT

Print_ISBN

0-7803-8301-X

Type

conf

DOI

10.1109/ICT.2003.1287516

Filename

1287516