Journal
OPTICAL MATERIALS
Volume 143, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2023.114291
Keywords
Phosphors; Photoluminescence; Cathodoluminescence; Pulsed laser deposition; Chemical stability
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Bi3+ doped LaGaO3 powders and thin films were prepared by citric acid sol-gel combustion method and pulsed laser deposition (PLD) technique. The highest photoluminescence (PL) and cathodoluminescence (CL) emissions were observed from La1-x GaO3:Bi3+ powders annealed at the appropriate temperature.
Bi3+ doped LaGaO3 powders and thin films were grown via citric acid sol-gel combustion method and pulsed laser deposition (PLD) technique, respectively. X-ray diffraction data confirmed crystallization of the orthorhombic LaGaO3 phase. Inductive coupled plasma spectroscopy data indicated that some Bi3+ ions evaporated at temperatures exceeding 800 degrees C during thermal treatment. The highest photoluminescence (PL) and cathodoluminescence (CL) emissions with a peak stabilized at 370 nm were observed from La1-x GaO3:Bi3+ powders annealed at 1200 degrees C. The PL and CL emission spectra of La1-x GaO3:Bi3+ to those of the powder samples. The effect of Bi3+ concentration and annealing temperature on the properties of powders and thin films is discussed.
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