Study of photophysical properties of different metal complexes of Alq₃.
Different metal complexes of Alq₃ (K(+) , Sr(2+) , Ca(2+) and Mg(2+) ) were synthesized by the precipitation method. The characterization of photoluminescence showed that presence of Mg(2+) ion enhances photoluminescence of Alq₃ phosphor. The emission spectra are observed at 560 nm when excited at a wavelength of 440 nm. The phosphor is excited at a longer wavelength in the blue region of small energy, so that it could be used as lamp phosphor. It is observed that the prepared phosphor AlMgq₅ is more suitable than Alq₃. The ionic radii of K(+) , Sr(2+) , Ca(2+) and Mg(2+) ions are in decreasing order. Therefore, the remarkable properties of AlMgq₅ could be considered as promising materials as opto- or optoelectronic materials.
Kamla Nehru College, Sakkardara Square, Nagpur, 440 009, India.
S A
SA
Bhagat
S B
SB
Raut
S J
SJ
Dhoble
D049449:Luminescence; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D055668:Photochemical Processes
D009942:Organometallic Compounds; C547306:tris-(8-hydroxyquinoline)aluminum