Effect of dopant concentration on the optical characteristics of Cr.sup.3+./sup.: ZnGa.sub.2./sub.O.sub.4./sub. transparent ceramics exhibiting persistent luminescence

0556140 - FZÚ 2023 RIV NL eng J - Článek v odborném periodiku
Dai, Z. - Mao, X. - Liu, Q. - Zhu, D. - Chen, H. - Xie, T. - Xu, J. - Hreniak, D. - Nikl, Martin - Li, J.
Effect of dopant concentration on the optical characteristics of Cr³⁺: ZnGa₂O₄ transparent ceramics exhibiting persistent luminescence.
Optical Materials. Roč. 125, Mar (2022), č. článku 112127. ISSN 0925-3467. E-ISSN 1873-1252
Grant CEP: GA MŠMT(CZ) EF16_019/0000760
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: Cr³⁺: ZnGa₂O₄ * transparent ceramics * persistent luminescence * concentration effect * HIP post-treatment
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.9, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.optmat.2022.112127

ZnGa2O4 (ZGO) persistent luminescence (PersL) ceramics doped with different concentrations of Cr3+ were prepared by the co-precipitation method and hot isostatic pressing (HIP) post-treatment. After HIP posttreatment, the ZGO PersL ceramics was significantly improved from opaque to transparent visual appearance due to the elimination of micro-pores during HIP process. The effects of Cr3+ concentration on the morphology, transmittance and PersL properties of ZGO PersL ceramics were systematically investigated. The ZGO PersL ceramics with higher Cr3+ dopant concentrations show less micro-pores and higher transmittance, which indicates that the Cr3+ can also work as a sintering additive to increase the density and to improve the optical quality of ZGO PersL ceramics. The photoluminescence excitation (PLE) and emission (PL) intensities increase with the increase of Cr3+ concentration up to 0.25 at.%.
Trvalý link: http://hdl.handle.net/11104/0330675