Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/92515
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Applied Physics | en_US |
dc.creator | Sun, Y | en_US |
dc.creator | Wong, KH | en_US |
dc.creator | Kwok, KW | en_US |
dc.date.accessioned | 2022-04-12T09:40:25Z | - |
dc.date.available | 2022-04-12T09:40:25Z | - |
dc.identifier.issn | 0040-6090 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/92515 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | © 2021 Elsevier B.V. All rights reserved. | en_US |
dc.rights | © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. | en_US |
dc.rights | The following publication Sun, Y., Wong, K. H., & Kwok, K. W. (2021). Strain-induced band gap tuning in flexible ferroelectric/mica thin films. Thin Solid Films, 731, 138741 is available at https://doi.org/10.1016/j.tsf.2021.138741. | en_US |
dc.subject | Ferroelectric | en_US |
dc.subject | Thin film | en_US |
dc.subject | Strain | en_US |
dc.subject | Band gap | en_US |
dc.title | Strain-induced band gap tuning in flexible ferroelectric/mica thin films | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 731 | en_US |
dc.identifier.doi | 10.1016/j.tsf.2021.138741 | en_US |
dcterms.abstract | Precise control of the band gap is crucial for lead-free ferroelectrics in the application of high-performance optical devices. In this work, we demonstrate that continuous and reversible tuning of optical band gap can be realized through mechanical strain in flexible Ba0.9Ca0.1Ti0.975Fe0.025O3 (BCTF)/mica films. Through bending the flexible films, a large mechanical strain of 0.85% could be introduced into the ferroelectric active layer, leading to a reduction in the band gap of 0.38 eV. The strong dependence of the optical band gap on mechanical bending mainly arisen from the strain-induced modification of Fe-O bond. Because of the superior mechanical property of mica, the flexible BCTF/mica film also exhibits excellent anti-fatigue characteristics over 103 bending cycles. Thus, this work provides an alternate perspective for the design and fabrication of ferroelectric optical devices that cover the entire visible light region. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Thin solid films, 1 Aug. 2021, v. 731, 138741 | en_US |
dcterms.isPartOf | Thin solid films | en_US |
dcterms.issued | 2021-08-01 | - |
dc.identifier.isi | WOS:000663800300001 | - |
dc.identifier.scopus | 2-s2.0-85106912436 | - |
dc.identifier.eissn | 1879-2731 | en_US |
dc.identifier.artn | 138741 | en_US |
dc.description.validate | 202204 bcwh | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | RGC-B1-023, AP-0012 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Natural Science Foundation of China; The Hong Kong Polytechnic University; the Fundamental Research Funds for the Central Universities | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 51854414 | - |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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Sun_Strain-Induced_Band_Gap.pdf | Pre-Published version | 1.53 MB | Adobe PDF | View/Open |
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