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Seebeck coefficient and thermal conductivity in doped C60.

Authors :
Wendong Wang
Zhenjun Wang
Jinke Tang
Shizhong Yang
Hua Jin
Guang-Lin Zhao
Qiang Li
Source :
Journal of Renewable & Sustainable Energy. Mar2009, Vol. 1 Issue 2, p023104. 8p. 1 Chart, 7 Graphs.
Publication Year :
2009

Abstract

Pressed bulk samples of C60 doped with P, Co, Al, and Bi have been investigated for their thermoelectric properties. These samples show extremely low thermal conductivity, typically in the range of 0.1–0.3 W/Km at room temperature. The Seebeck coefficients of Co, Al, and Bi doped C60 solids are in the tens of μV/K; however, for P doped C60 samples, a very large Seebeck coefficient in the order of 103 μV/K was observed. The value of the Seebeck coefficient seems to depend sensitively on the P concentration and changes sign upon annealing at 100 °C. Ab initio density functional theory calculations show that the calculated electronic structures and the activation energies strongly depend on the dopants in C60 solids. The high Seebeck coefficient in studied P doped C60 is due to the system’s unique dopant and concentration. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
19417012
Volume :
1
Issue :
2
Database :
Academic Search Index
Journal :
Journal of Renewable & Sustainable Energy
Publication Type :
Academic Journal
Accession number :
43017648
Full Text :
https://doi.org/10.1063/1.3106303