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Electrical properties of natural and synthetic pyrite (FeS2) crystals

Published online by Cambridge University Press:  31 January 2011

R. Schieck ,
A. Hartmann ,
S. Fiechter ,
R. Könenkamp  and
H. Wetzel
R. Schieck
Affiliation:
Hahn-Meitner-Institut Berlin, Bereich Photochemische Energieumwandlung, Abteilungen Solare Energetik und Materialforschung, Glienicker Straße 100, D-1000 Berlin 39, Federal Republic of Germany
A. Hartmann
Affiliation:
Hahn-Meitner-Institut Berlin, Bereich Photochemische Energieumwandlung, Abteilungen Solare Energetik und Materialforschung, Glienicker Straße 100, D-1000 Berlin 39, Federal Republic of Germany
S. Fiechter*
Affiliation:
Hahn-Meitner-Institut Berlin, Bereich Photochemische Energieumwandlung, Abteilungen Solare Energetik und Materialforschung, Glienicker Straße 100, D-1000 Berlin 39, Federal Republic of Germany
R. Könenkamp
Affiliation:
Hahn-Meitner-Institut Berlin, Bereich Photochemische Energieumwandlung, Abteilungen Solare Energetik und Materialforschung, Glienicker Straße 100, D-1000 Berlin 39, Federal Republic of Germany
H. Wetzel
Affiliation:
Hahn-Meitner-Institut Berlin, Bereich Photochemische Energieumwandlung, Abteilungen Solare Energetik und Materialforschung, Glienicker Straße 100, D-1000 Berlin 39, Federal Republic of Germany
*
a)Address correspondence to this author.
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Abstract

We have prepared a series of synthetic n-type pyrite (FeS2) crystals by chemical vapor transport and high temperature solution growth. These and natural crystals were characterized with respect to Hall mobility, carrier concentration, and conductivity, and chemically analyzed by mass spectroscopy and atomic emission spectroscopy. The results are compared in detail to previous work on natural crystals. Conductivity and carrier concentration in our measurements varied between 0.05 and 3.5 (Ω cm)−1 and between 6.9·1015 and 5.4·1017 cm−3, respectively. The peak mobilities have values ranging from 100 to 2000 cm2/Vs. We find that sulfur deficiency and a number of impurity elements, such as Si, Cu, and Al, can qualitatively account for the trends in the electronic properties.

Type
Articles
Information
Journal of Materials Research , Volume 5 , Issue 7 , July 1990 , pp. 1567 - 1572
Copyright
Copyright © Materials Research Society 1990

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