Comparison of the luminescence properties of phosphate-tungsten bronze and cerium doped phosphate-tungsten bronze

2nd International Conference on Chemo and Bioinformatics ICCBIKG 2023 (160-163)

АУТОР(И) / AUTHOR(S): Tijana V. Maksimović, Ljubinka G. Joksović, Dimitrije Mara, Rik Van Deun, Zoran P. Nedić, Marina Simović-Pavlović, Maja C. Pagnacco

Е-АДРЕСА / E-MAIL:

DOI: 10.46793/ICCBI23.160M

САЖЕТАК / ABSTRACT:

Phosphate-tungsten bronzes (PWBs) constantly attract a lot of attention owing to their interesting chemical, mechanical, and optical properties. Furthermore, tungsten bronzes as inert inorganic solids, exhibit interesting and useful electronic properties when rare-earth ions are incorporated into their structure. Cerium doped phosphate-tungsten bronze (Ce-PWB) is obtained in the process of phase transformations of CePW₁₂O₄₀×6H₂O (Ce-PWA) salt. The brown crystals of Ce-PWB are formed after heating of Ce-PWA in a furnace, in a temperature range from room temperature to 650 °C. In the present paper the luminescence properties of undoped PWB and Ce-PWB are analyzed and compared. Regarding the characterized luminescence properties of PWB and Ce-PWB, only PWB matrix showed luminescence, while dopant Ce³⁺ had no significant influence on the change of the emission spectra with characteristic spectra for this ion. The obtained CIE chromaticity diagrams showed that both samples emit in the deep blue region, suggesting their possible use as a blue emitting source for white light-emitting diodes (LEDs).

КЉУЧНЕ РЕЧИ / KEYWORDS:

phosphate-tungsten bronze, cerium doped phosphate-tungsten bronze, luminescence properties

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