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dc.contributor.authorBalanov, Vasilii A.
dc.contributor.authorTemerov, Filipp
dc.contributor.authorPankratov, Vladimir
dc.contributor.authorCao, Wei
dc.contributor.authorBai, Yang
dc.date.accessioned2023-12-08T14:50:58Z
dc.date.available2023-12-08T14:50:58Z
dc.date.issued2023
dc.identifier.issn2367-198X
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/full/10.1002/solr.202200995
dc.identifier.urihttps://dspace.lu.lv/dspace/handle/7/64941
dc.descriptionThis work was supported by University of Oulu and the European Research Council (ERC) under the ERC Starting Grant (agreement number 101039110). V.B. acknowledges the EDUFI Fellowship provided by the Finnish National Agency for Education. F.T. and W.C. acknowledge financial support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 101002219). The Institute of Solid State Physics, University of Latvia as the Center of Excellence, has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement no. 739508, project CAMART2.en_US
dc.description.abstractPhotosensors, photodetectors, or color sensors are key components for various optical and optoelectronic applications. Semiconductor-based photodetection has been a dominator which is excellent at measuring the photon intensity of incident light. However, the wavelength of the incident light to be measured must be known beforehand and it mostly depends on auxiliary methods to filter unknown wavelengths. Herein, an alternative but simple mechanism that is using a monolithic, bandgap-engineered photoferroelectric ceramic to blindly determine the wavelength and intensity of incident light at the same time is demonstrated. The photoferroelectric compound is Ba- and Ni-codoped (K,Na)NbO3 exhibiting a direct bandgap of ≈2 eV and a spontaneous polarization of ≈0.25 C m−2. The band–band charge carrier transition is confirmed by multiple characterization methods of photoluminescence, photodielectric spectroscopy, and photoconductivity. The existent optoelectrical cumulative effect enabled by the simultaneous narrow bandgap and strong ferroelectricity allows to reliably distinguish the wavelengths of 405, 552, and 660 nm as well as the power density ranging from ≈0.1 to 10 W cm−2, with the photoresponsivity of up to 60 μA W−1. Consequently, this work proposes an alternative to semiconductor-based counterparts for filterless, wavelength-selective photodetection and color sensing. © 2022 The Authors. Solar RRL published by Wiley-VCH GmbH. --//-- Balanov V.A., Temerov F., Pankratov V., Cao W., Bai Y., Filterless Visible-Range Color Sensing and Wavelength-Selective Photodetection Based on Barium/Nickel Codoped Bandgap-Engineered Potassium Sodium Niobate Ferroelectric Ceramics (2023) Solar RRL, 7 (3), art. no. 2200995, DOI: 10.1002/solr.202200995, https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142936298&doi=10.1002%2fsolr.202200995&partnerID=40&md5=9af5e9b9c683edd409a7a1b15439782e published under theen_US
dc.description.sponsorshipERC Starting Grant (agreement number 101039110); ERC under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 101002219); The Institute of Solid State Physics, University of Latvia as the Center of Excellence, has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement no. 739508, project CAMART2.en_US
dc.language.isoengen_US
dc.publisherWiley-Blackwellen_US
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/739508/EU/Centre of Advanced Material Research and Technology Transfer/CAMART²en_US
dc.relation.ispartofseriesSolar RRL;7 (3); 2200995
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectResearch Subject Categories::NATURAL SCIENCESen_US
dc.subjectKNBNNOen_US
dc.subjectperovskites;en_US
dc.subjectphotodielectricsen_US
dc.subjectphotoferroelectricsen_US
dc.subjectphotoluminescenceen_US
dc.subjectphotosensorsen_US
dc.titleFilterless Visible-Range Color Sensing and Wavelength-Selective Photodetection Based on Barium/Nickel Codoped Bandgap-Engineered Potassium Sodium Niobate Ferroelectric Ceramicsen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.identifier.doi10.1002/solr.202200995


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