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Anomalous photocurrent observed in an Fe-ZnS: Fe schottky diode

Authors Li, Baikui
Wang, Chunrui
Sou, Iamkeong
Ge, Weikun
Wang, Jiannong
Issue Date 2007
Source Applied physics letters , v. 91, (17), 2007, OCT 22, article number 172104
Summary Anomalous photocurrent was observed in an epitaxial Fe/Zn0.96Fe0.04S Schottky diode grown by molecular beam epitaxy. The temperature dependent decay behavior of the anomalous photocurrent has been studied. A model based on the photoionization of the acceptorlike interface states is proposed to explain this anomalous phenomenon. By fitting the decay curves of the anomalous photocurrent at different temperatures, ionization energy of the interface states is obtained from an Arrhenius plot of the decay time constants. We believe that these interface states are associated with some complex (Fe, S) defects formed at the Fe/ ZnFeS interface. (C) 2007 American Institute of Physics.
ISSN 0003-6951
Rights Applied Physics Letters © copyright (2007) American Institute of Physics. The Journal's web site is located at
Language English
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