Wang, D., Wang, G., Lu, Z. orcid.org/0000-0002-9967-5221 et al. (2 more authors) (2020) Crystal structure, phase transitions and photoferroelectric properties of KNbO3-based lead-free ferroelectric ceramics: A brief review. Frontiers in Materials, 7. 91. ISSN 2296-8016
Abstract
Ferroelectric KNbO3 (KN) ceramics were first fabricated in the 1950s, however, their use in commercial technical applications has been hampered by inherently challenging processing difficulties. In the early 1990s, the interest in KN ceramics was revived by the pursuit of Pb-free piezoceramics. More recently the search for inexpensive photovoltaic materials alternative to Si prompted bandgap engineering studies in KN-based solid solutions. If the ferroelectric and piezoelectric properties of KN-based ceramics are now well established, the understanding of chemical doping on the bandgap of KN-based ceramics is still in its infancy. Here we provide a brief review on the current understanding of the structure-property relationships in this class of materials, which successively covers crystal structures, structural phase transitions, lattice dynamics, polarization, solid solutions and bandgap engineering of KN.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Wang, Wang, Lu, Al-Jlaihawi and Feteira. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). (http://creativecommons.org/licenses/by/4.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
Keywords: | potassium niobate; ferroelectric; photoferroelectric; bandgap; photovoltaic |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 21 May 2020 16:18 |
Last Modified: | 21 May 2020 16:18 |
Status: | Published |
Publisher: | Frontiers Media SA |
Refereed: | Yes |
Identification Number: | 10.3389/fmats.2020.00091 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160996 |