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dc.contributor.authorTu, Chi-Shun
dc.contributor.authorChen, Pin-Yi
dc.contributor.authorChen, Cheng-Sao
dc.contributor.authorLin, Chun-Yen
dc.contributor.authorSchmidt, V. Hugo
dc.date.accessioned2018-09-10T21:30:43Z
dc.date.available2018-09-10T21:30:43Z
dc.date.issued2018-11
dc.identifier.citationTu, Chi-Shun, Pin-Yi Chen, Cheng-Sao Chen, Chun-Yen Lin, and V. Hugo Schmidt. "Tailoring microstructure and photovoltaic effect in multiferroic Nd-substituted BiFeO3 ceramics by processing atmosphere modification." Journal of the European Ceramic Society, 38 no. 4 (November 2017): 1389-1398. DOI: 10.1016/j.jeurceramsoc.2017.11.025.en_US
dc.identifier.issn0955-2219
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/14755
dc.description.abstractThis study highlights significant effects of processing atmosphere ratio (O2/N2) on microstructure, impurity phases, atomic hybridization, band gap, and photovoltaic properties in (Bi0.93Nd0.07)FeO3 (BFO7Nd) ceramics. A Rietveld-refinement analysis indicates increased oxygen and bismuth vacancies in the specimens processed in the O2-rich atmosphere (hereafter called O2-rich-atmosphere specimens). In the matrix containing mainly Fe3+ ions, Fe4+ cations were identified with O2 concentration decreasing in the atmosphere by Fe K/L-edges synchrotron X-ray absorption. Oxygen K-edge absorption reveals reduced hybridizations of the O 2p–Fe 3d and the O 2p–Bi 6sp orbitals in the O2-rich-atmosphere specimens. Photovoltaic effects in the ITO/BFO7Nd/Au heterostructures under near-ultraviolet irradiation (λ = 405 nm) exhibit strong dependences on O2/N2 ratio. A p-n-junction model was used to describe open-circuit voltage and short-circuit current density as functions of irradiation intensity. The calculated carrier densities (in BFO7Nd ceramics) and p-n-junction widths (in the dark) are ∼1023 m−3 and a few hundred nanometers, respectively.en_US
dc.description.sponsorshipMinistry of Science and Technology of Taiwan (MOST105-2221-E-030-002-MY3, MOST106-2221-E-131-005, MOST106-2221-E-146-003)en_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.titleTailoring microstructure and photovoltaic effect in multiferroic Nd-substituted BiFeO3 ceramics by processing atmosphere modificationen_US
dc.typeArticleen_US
mus.citation.extentfirstpage1389en_US
mus.citation.extentlastpage1398en_US
mus.citation.issue4en_US
mus.citation.journaltitleJournal of the European Ceramic Societyen_US
mus.citation.volume38en_US
mus.identifier.categoryPhysics & Mathematicsen_US
mus.identifier.doi10.1016/j.jeurceramsoc.2017.11.025en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentPhysics.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage7en_US


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