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Enhanced Thermoelectric Properties of Strongly Degenerate Polycrystalline Silicon upon Second Phase Segregation

Published online by Cambridge University Press:  14 March 2011

Dario Narducci ,
Ekaterina Selezneva ,
Andrea Arcari ,
Gianfranco Cerofolini ,
Elisabetta Romano ,
Rita Tonini  and
Gianpiero Ottaviani
Dario Narducci
Affiliation:
Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, via R. Cozzi 53, 20125 Milano (Italy)
Ekaterina Selezneva
Affiliation:
Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, via R. Cozzi 53, 20125 Milano (Italy)
Andrea Arcari
Affiliation:
Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, via R. Cozzi 53, 20125 Milano (Italy)
Gianfranco Cerofolini
Affiliation:
Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, via R. Cozzi 53, 20125 Milano (Italy)
Elisabetta Romano
Affiliation:
Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, via R. Cozzi 53, 20125 Milano (Italy)
Rita Tonini
Affiliation:
Dipartimento di Fisica, Università di Modena e Reggio Emilia, via Campi 213, 41100 Modena (Italy)
Gianpiero Ottaviani
Affiliation:
Dipartimento di Fisica, Università di Modena e Reggio Emilia, via Campi 213, 41100 Modena (Italy)
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Abstract

We report the study of the thermoelectric properties of degenerate, boron-doped polycrystalline silicon on insulator structures. The occurrence of a regime where both the Seebeck coefficient and the conductivity increase is confirmed. This results in a power factor P of 13 mW K-2 m-1. We propose that such high values of P may be determined by adiabatic energy filtering occurring at grain boundaries decorated by segregated boron.

Keywords

thermoelectricitySigrain boundaries
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1314: Symposium LL – Thermoelectric Materials for Solid-State Power Generation and Refrigeration , 2011 , mrsf10-1314-ll05-16
Copyright
Copyright © Materials Research Society 2011

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References

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