International Journal of Chemical and Biochemical Sciences (ISSN 2226-9614)[/vc_column_text][/vc_column][/vc_row]
VOLUME 25(19) (2024)
Microwave-assisted synthesis and characterization of SrAl2O4/Eu/Dy and the role of phosphorus dopants on its fluorescence and phosphorescence properties
Seyed Mohsen Mousavi, *Shahram Moradi Dehaghi, Saeed Abedini Khorrami
Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran
Abstract
The purpose of this study was the production of photoluminescent strontium aluminate phosphorous pigments using varied ratios of Sr, boric acid, Nd, and citric acid. These pigments are remarkably utilized in various areas. The presence of each one of these compounds has a significant impact on the fluorescence or phosphorescence effect, as well as their physical properties such as morphology and crystal structure. These physical changes were measured with spectroscopic methods. Some pigments had red emission under UV radiation before being subjected to the reduction process. After the reduction, they showed strong afterglow. 16 samples with different constituting components were prepared among which 8 were selected for this study, labeled samples S1 to S8. After the reduction process, they were labeled samples RS1 to RS8. The phosphorescence analysis with the wavelength of 254 and 360 nm demonstrated an intensity of 439 and 191 respectively for sample RS5, and 631 and 634 for the fluorescence measurement with the wavelength of 254 and 360 nm for the same sample. The sample RS5 demonstrated the longest afterglow of about 4 hours.
Keywords: Microwave synthesis, Phosphorescence, Fluorescence, Dopant Phosphors.
Full length article – PDF *Corresponding Author, e-mail: shm_moradi@iau-tnb.ac.irb Doi # https://doi.org/10.62877/60-IJCBS-24-25-19-60