Article: Influences of leakage currents on the transport properties and photoelectric effects in heterojunctions composed of colossal magnetoresistance manganites and Nb-doped titanates

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TitleInfluences of leakage currents on the transport properties and photoelectric effects in heterojunctions composed of colossal magnetoresistance manganites and Nb-doped titanates
AuthorsWang, JF1
Wu, ZP1
Gao, J1
KeywordsBarrier heights
Colossal magnetoresistance manganites
Effects of leakage
Forward currents
Rectifying properties
Issue Date2012
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
CitationJournal of Applied Physics, 2012, v. 111 n. 7, article no. 07D724 [How to Cite?]
DOI: http://dx.doi.org/10.1063/1.3679413
AbstractThe effects of leakage currents were investigated for Pr 0.7Sr 0.3MnO 3/Nb-SrTiO 3 heterojunctions. It was found that small amounts of leakage currents could cause pronounced detriment to the rectifying properties but had very limited impacts on the barrier heights determined from the forward currents. Significant open circuit voltages V OC were observed when the highly rectified junctions were illuminated by a visible light with a wavelength of 532 nm. For the less rectified junctions, the leakage currents reduced V OC severely and resulted in an anomalous temperature dependence of V OC. Theories for semiconductor contacts were employed in order to discuss these results. © 2012 American Institute of Physics.
ISSN0021-8979
2011 Impact Factor: 2.168
2011 SCImago Journal Rankings: 0.139
DOIhttp://dx.doi.org/10.1063/1.3679413
DC Field
Value
dc.contributor.authorWang, JF
dc.contributor.authorWu, ZP
dc.contributor.authorGao, J
dc.date.accessioned2012-09-20T08:02:01Z
dc.date.available2012-09-20T08:02:01Z
dc.date.issued2012
dc.description.abstractThe effects of leakage currents were investigated for Pr 0.7Sr 0.3MnO 3/Nb-SrTiO 3 heterojunctions. It was found that small amounts of leakage currents could cause pronounced detriment to the rectifying properties but had very limited impacts on the barrier heights determined from the forward currents. Significant open circuit voltages V OC were observed when the highly rectified junctions were illuminated by a visible light with a wavelength of 532 nm. For the less rectified junctions, the leakage currents reduced V OC severely and resulted in an anomalous temperature dependence of V OC. Theories for semiconductor contacts were employed in order to discuss these results. © 2012 American Institute of Physics.
dc.description.naturepublished_or_final_version
dc.identifier.citationJournal of Applied Physics, 2012, v. 111 n. 7, article no. 07D724 [How to Cite?]
DOI: http://dx.doi.org/10.1063/1.3679413
dc.identifier.doihttp://dx.doi.org/10.1063/1.3679413
dc.identifier.hkuros207207
dc.identifier.issn0021-8979
2011 Impact Factor: 2.168
2011 SCImago Journal Rankings: 0.139
dc.identifier.issue7, article no. 07D724
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-84861724669
dc.identifier.urihttp://hdl.handle.net/10722/164502
dc.identifier.volume111
dc.languageeng
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
dc.publisher.placeUnited States
dc.relation.ispartofJournal of Applied Physics
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
dc.rightsCopyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (Journal of Applied Physics, 2012, v. 111 n. 7, article no. 07D724) and may be found at (http://jap.aip.org/resource/1/japiau/v111/i7/p07D724_s1).
dc.subjectBarrier heights
dc.subjectColossal magnetoresistance manganites
dc.subjectEffects of leakage
dc.subjectForward currents
dc.subjectRectifying properties
dc.titleInfluences of leakage currents on the transport properties and photoelectric effects in heterojunctions composed of colossal magnetoresistance manganites and Nb-doped titanates
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong