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dc.contributor.authorChang, L.-Y.
dc.contributor.authorTu, Chi-Shun
dc.contributor.authorChen, Pin-Yi
dc.contributor.authorChen, Cheng-Sao
dc.contributor.authorSchmidt, V. Hugo
dc.contributor.authorWei, H.-H.
dc.contributor.authorHuang, D.-J.
dc.contributor.authorChan, T.-S.
dc.date.accessioned2019-02-08T19:05:51Z
dc.date.available2019-02-08T19:05:51Z
dc.date.issued2016-01
dc.identifier.citationL.-Y. Chang, C.-S. Tu, P.-Y. Chen, C.-S. Chen, V.H. Schmidt, H.-H. Wei, D.-J. Huang, and T.-S. Chan, “Raman vibrations and photovoltaic conversion in rare earth doped (Bi 0.93 RE 0.07 )FeO 3 (RE=Dy, Gd, Eu, Sm) ceramics,” Ceramics International 42, 834-842 (2016). doi: 10.1016/j.ceramint.2015.09.005.en_US
dc.identifier.issn0272-8842
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/15240
dc.description.abstractHigh-resolution Raman spectra, X-ray diffraction, oxygen vacancies, synchrotron X-ray absorption spectroscopy, magnetization, optical band gap, and photovoltaic (PV) conversion have been studied in BiFeO3 (BFO) and (Bi0.93RE0.07)FeO3 (RE=Dy, Gd, Eu and Sm) multiferroic ceramics (7%Dy–BFO, 7%Gd–BFO, 7%Eu–BFO, and 7%Sm–BFO). 7%Dy–BFO exhibits a weak ferromagnetic behavior instead of the linear antiferromagnetic responses found in the other compounds. Optical transmissions reveal band gaps of 2.20–2.21 eV, which are slightly smaller than 2.24 eV in pure BFO. The current vs. voltage (I–V) characteristic curves of indium tin oxide (ITO)/(Bi0.93RE0.07)FeO3 ceramics/Au heterostructures suggest a p–n-junction-like behavior. The maximal PV power-conversion efficiencies under illumination of λ=405 nm in ITO/7%Dy–BFO/Au, ITO/7%Gd–BFO/Au, ITO/7%Eu–BFO/Au, and ITO/7%Sm–BFO/Au respectively reach 0.22%, 0.35%, 0.27%, and 0.24%, which are much larger than 0.017% in ITO/BFO/Au. The PV open-circuit voltage and short-circuit current can be reasonably described by a junction model as a function of illumination intensity.en_US
dc.description.sponsorshipMinistry of Science and Technology of Taiwan Project nos. 104-2221-E-030-014, 104-2221-E-146-001, and 102-2221-E-131-006en_US
dc.language.isoenen_US
dc.rightsThis Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en_US
dc.titleRaman vibrations and photovoltaic conversion in rare earth doped (Bi 0.93 RE 0.07 )FeO 3 (RE=Dy, Gd, Eu, Sm) ceramicsen_US
dc.typeArticleen_US
mus.citation.extentfirstpage834en_US
mus.citation.extentlastpage842en_US
mus.citation.issue1en_US
mus.citation.journaltitleCeramics Internationalen_US
mus.citation.volume42en_US
mus.identifier.categoryPhysics & Mathematicsen_US
mus.identifier.doi10.1016/j.ceramint.2015.09.005en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentPhysics.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage4en_US


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