Abstract
Hexagonal LaPO 4·nH 2O and monoclinic LaPO 4 doped with Eu 3+ powder phosphors were prepared through hydrothermal reaction, respectively, at 100 °C and 200 °C under fine control of the acidity in the starting materials based on lanthanide oxides and phosphoric acid. X-ray diffraction, infrared spectroscopy, thermogravimetric analysis, thermal treatment, scanning electron microscopy and fluorescence spectroscopy have been used to characterize these materials. The structural, morphological, and luminescent changes of the products due to the heating temperature are studied. The effect of the thermal treatment on the colorimetric characteristic of the red emission of the Eu 3+ was investigated. The Commission Internationale de L’Eclairage (CIE) chromatic coordinates, dominant wavelength, and colour purity were determined, discussed and compared to other products like Eu 3+-doped zinc aluminate (ZnAl 2O 4) and yttrium oxide (Y 2O 3).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
