STUDY OF OPTICAL AND LUMINESCENT PROPERTIES OF CRYSTAL-BASED MEMBER LUMINOPHORES FOR STRONG WHITE LIGHT EMITTING DIODES
B.H. Tagiyev, R.S. Madatov, N. Jalilova, R.M. Mamishova,
2024   03   az   p.07-09

ABSTRACT

The investigation of the optical and luminescent properties of crystalline CaGa2S7:Eu2+-based member luminophores at room temperature is given. It was determined that the optical properties of the composite luminophore with crystal-based member compound depends on the amount of filler member compound in the composite. High-intensity radiation is observed in the region of -700 nm, and its intensity decreases as the thickness of the luminophore decreases. When adding a compound-based filler to the CaGa2S7:Eu2+ crystal, the emission spectrum shifts to the long-wave region.

Keywords: Luminophore substance, crystalline substance, luminescence, luminescent quantum efficiency, emission coefficient, absorption coefficient, reflectance.
PACS: 535.37:621.315.592:(661.865.5+661.866.1)

DOI:-

Received: 22.07.2024
Internet publishing: 14.08.2024

AUTHORS & AFFILIATIONS

National Aviation Academy, 30, Mardakan str., Baku, AZ 1045
E-mail: msrahim@mail.ru, narmin.calilova@azalsecurity.az

Graphics and Images

     

Fig.1-2-3-4

 REFERENCIES

[1]   B.D. Urmanov, M.S.Leanenia, G.P. Yablonskii, O.B. Taghiyev,K.O. Taghiyev,F.A. Kazimova, T.Sh. Ibragimova. Photoluminescence of Ca4Ga2S7:Eu2+ in wide excitation intensity and temperature range. Modern Physics Letters B, 2021, (https://doi.org/10. 1142/S0217984921503929) IF.1.7
[2]   Аrif Мirjalal Pashayev, Bahadir Guseyn Tagiyev, Said Аbush Аbushov, Оgtay Bahadir Таgiyev, Fatma Аgaverdi Kаzimova. Photoluminescence of EuGa2Se4:Nd3+. Optics and photonics journal, 2, p. 59-63, 2012
[3]   A. Anedda, C.M. Carbonaro, R. Corpino, M.Marceddu , O.B. Tagiev , A.N. Georgobini. Low-temperature termoluminescence in CaGa2S4:Eu2+. J. of Luminescence 128, 2008, 1496-1500.
[4]   B.G. Tagiev, S.A. Abushov, E. Asadov. Excitation and Emission Spectra and Luminescence Kinetics of Ca(AlxGa1‒x)2S4:Eu2+ Crystals. Crystallography Reports, 2015, Vol. 60, № 6, pp. 924–928.
[5]   Maksim Leanenia, Evgenii Lutsenko, Mikalai V. Rzheutski, O.B. Tagiev. High photoluminescence stability of CaGa4O7:Eu3+ red phosphor in wide excitation intensity interval.
[6]   D.T. Khan, N.T. Dang, S.H. Jabarov. Study on luminescent properties of Tb3+ and Sm3+ co-doped CaSiO3 phosphors for white light emitting diodes, Materials Research Express, Volume 7, Issue 1, id.016507, DOI10.1088/2053-1591/ab5ab8
[7]   G.P.Yablonskii, V.Z.Zubialevich, E.V.Lutsenko, A.M. Pashaev, B.G. Tagiev, O.B. Tagiev and S.A. Abushov. “Luminescence Propetties of Barium Thio-and Seleno-gallates Doped with Eu, Ce, and Eu+Ce,” Japanese Journal Applied Physics, Vol. 50, № 5, 2011, pp. 05FG02-05FG02-2.
[8]   A.N.Georgobiani, S.A.Abushov, F.A.Kazymova, B.G. Tagiev, O.B. Tagiev, P.Benalloul and C.Barthou. Luminescent Properties of EuGa2S4:Er3+, Inorganic Materials, vol. 42, № 11, 2006, pp.11881192. doi:10.1134/S0020168506110033