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Luminescence properties of ZnB2O4:Pb2+ phosphors: Suppression of concentration quenching

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dc.contributor.author Mükremin, Yılmaz
dc.contributor.author Ertuğrul, Erdoğmuş
dc.date.accessioned 2019-11-27T06:21:18Z
dc.date.available 2019-11-27T06:21:18Z
dc.date.issued 2019-11-14
dc.identifier.citation M. Yılmaz, E. Erdoğmuş, Luminescence properties of ZnB2O4:Pb2+ phosphors: Suppression of concentration quenching, J. Lumin. 218 (2020). doi:10.1016/j.jlumin.2019.116868. en_US
dc.identifier.uri http://hdl.handle.net/11772/2021
dc.description.abstract The UV-A emitting ZnB2O4:Pb2+ crystalline powder phosphors were produced using the conventional solid-state reaction synthesis technique at 830 °C for 6 h in air. The morphology and structure of the phosphors were explored by SEM, XRD and FT-IR analyses. The optical properties of the phosphors were examined by UV–vis diffuse reflectance and steady-state photoluminescence (PL) analyses. The excitation and emission bands of Pb2+ doped ZnB2O4 was observed at 304 nm and 388 nm, respectively. The effects of dopant concentration on the PL emission intensities of Zn1–xPbxB2O4 (0 ≤ x ≤ 0.15) phosphors were studied. The well-known concentration quenching phenomenon was not observed in the studied range. To explain the observation of suppressed concentration quenching the energy transfer between radiative and non-radiative centers has been discussed. Based on the absorption, excitation and emission results of the samples, a tentative configurational coordinate-energy diagram was proposed. Obtained results show that the ZnB2O4:Pb2+ phosphor is a good candidate for UV-A applications as a rare-earth free wavelength converter. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.isversionof https://doi.org/10.1016/j.jlumin.2019.116868 en_US
dc.rights info:eu-repo/semantics/embargoedAccess en_US
dc.subject Pb2+ ion en_US
dc.subject ZnB2O4 en_US
dc.subject Suppressed concentration quenching en_US
dc.subject Photoluminescence en_US
dc.subject UV-A phosphor en_US
dc.title Luminescence properties of ZnB2O4:Pb2+ phosphors: Suppression of concentration quenching en_US
dc.type article en_US
dc.relation.journal Journal of Luminescence en_US
dc.contributor.department Bartın Üniversitesi, Mühendislik Fakültesi, Metalurji ve Malzemem Mühendisliği Bölümü en_US
dc.identifier.issue 218 en_US
dc.identifier.startpage 116868 en_US


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