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Fabrication and characterizations of Cr3+‐doped ZnGa2O4 transparent ceramics with persistent luminescence.
- Source :
- Journal of the American Ceramic Society; Oct2021, Vol. 104 Issue 10, p4927-4931, 5p, 1 Black and White Photograph, 3 Graphs
- Publication Year :
- 2021
-
Abstract
- 0.5 at.% Cr:ZnGa2O4 precursor was synthesized by the co‐precipitation method with nitrates as raw materials, using ammonium carbonate as the precipitant. Low‐agglomerated Cr:ZnGa2O4 powders with an average particle size of 43 nm were obtained by calcining the precursor at 900℃ for 4 h. Using the powders as starting materials, 0.5 at.% Cr:ZnGa2O4 ceramics with an average grain size of about 515 nm were prepared by presintering at 1150℃ for 5 h in air and HIP post‐treatment at 1100℃ for 3 h under 200 MPa Ar. The in‐line transmittance of 0.5 at.% Cr:ZnGa2O4 ceramics with a thickness of 1.3 mm reaches 59.5% at the wavelength of 700 nm. The Cr:ZnGa2O4 ceramics can be effectively excited by visible light and produce persistent luminescence at 700 nm. For Cr:ZnGa2O4 transparent ceramics, the brightness of afterglow was larger than 0.32 mcd/m2 after 30 min, which is far superior to that of Cr:ZnGa2O4 persistent luminescence powders. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00027820
- Volume :
- 104
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Journal of the American Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 151568495
- Full Text :
- https://doi.org/10.1111/jace.17937