| Institution: | 1. Research Scholar, Department of Physics, Jawaharlal Nehru Technological University, Anantapur, Andhra Pradesh, India
Department of Physics, Rajeev Gandhi Memorial College of Engineering and Technology (Autonomous), Nandyal, Andhra Pradesh, India;2. Department of Physics, Rajeev Gandhi Memorial College of Engineering and Technology (Autonomous), Nandyal, Andhra Pradesh, India |
| Abstract: | A series of praseodymium (Pr3+) ion activated Sr3Gd(1?x)(PO4)3:xPr3+ (0 ≤ x ≤ 2.0 mol%) phosphors were prepared and their structural, compositional and luminescence properties were investigated. The X-ray diffraction profiles indicate that the studied phosphors crystallized into body centred cubic structure and the Pr3+ ions have no influence on Sr3Gd(PO4)3 phase. The high-resolution scanning electron microscopy images show the agglomeration of particles that are inter-connected and form irregular shape Sr3Gd(PO4)3 structures. The excitation transitions corresponding to Pr3+:3H4 → 3P2,1,0 transitions at 445, 471 and 483 nm, respectively, matched well with the emission of blue-light-emitting diode (LED) chip. The emission spectra show strong reddish-orange luminescence through 1D2 → 3H4 transition when excited at 445 nm blue wavelength. The synthesized phosphors have the potential to be used as reddish-orange lighting devices. |
