Open AccessLuminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures
Author(s) -
Nadežda Stanković,
Marko G. Nikolić,
Branislav Jelenković,
Nina Daneu,
Jelena Maletaškić,
Marija Prekajski Đorđević,
Branko Matović
Publication year - 2020
Publication title -
processing and application of ceramics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.326
H-Index - 15
eISSN - 2406-1034
pISSN - 1820-6131
DOI - 10.2298/pac2001071s
Subject(s) - materials science , calcination , phosphor , scanning electron microscope , photoluminescence , luminescence , transmission electron microscopy , thermal stability , spectroscopy , powder diffraction , analytical chemistry (journal) , particle size , chemical engineering , nanotechnology , optoelectronics , crystallography , composite material , chemistry , biochemistry , physics , chromatography , quantum mechanics , engineering , catalysis
In the last decade, an immense progress has been made in white LEDs, mainly due to the development of red-emitting phosphors. In this paper, we report on the synthesis of Eu3+ activated Y2MoO6 by a self-initiated and self-sustained method. The obtained powder was calcined at various temperatures in the 600-1400?C range and examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence spectroscopy (PL). The results revealed that all powders are single phase Y2MoO6:Eu3+, with particle size in the nanorange at lower treatment temperatures (600 and 800?C) and in the microrange at higher calcination temperatures (1000-1400?C). The obtained powders are promising materials for white light-emitting diodes as they can efficiently absorb energy in 324-425 nm region (near-UV to blue light region) and emit at 611 nm in the red region of the spectrum, while exhibiting high thermal and chemical stability.