| Title |
Synthesis and optical properties of blue-excitable red-emitting K2Bi(MoO4)(PO4):Pr3+ powders / |
| Authors |
Grigorjevaitė, Julija ; Katelnikovas, Artūras |
| DOI |
10.1016/j.jmrt.2020.11.054 |
| Full Text |
|
| Is Part of |
Journal of materials research and technology.. Amsterdam : Elsevier. 2020, vol. 9, iss. 6, p. 15779-15787.. ISSN 2238-7854. eISSN 2214-0697 |
| Keywords [eng] |
Red phosphor ; Thermal quenching ; Color coordinates ; Inorganic materials ; Luminescence ; Cross-relaxation ; Trivalent praseodymium |
| Abstract [eng] |
A series of K2Bi(PO4) (MoO4) samples doped with 0.5%–50% Pr3+ was synthesized by a solid state synthesis method. The crystal phase was monitored by powder X-ray diffraction (XRD) and morphological characteristics were investigated by scanning electron microscopy (SEM). The luminescence properties: photoluminescence excitation and emission spectra, thermal quenching, and fluorescence lifetime values of Pr3+- doped samples were evaluated. The samples showed orange-red luminescence under near-UV excitation. It turned out that the profile of Pr3+ emission spectra is concentration and temperature dependent. Concentration quenching was observed in samples with higher than 1% Pr3+ concentration. Moreover, the calculated color coordinates showed good thermal stability in the 77–500 K temperature range. Based on the obtained results it can be concluded that prepared samples can be used in luminescent security pigments. |
| Published |
Amsterdam : Elsevier |
| Type |
Journal article |
| Language |
English |
| Publication date |
2020 |
| CC license |
|
