2021   01   en   p.12-15 B.D. Urmanov1, M.S. Leonenya1, P.G. Yablonski1, O.B. Tagiyev2,3, F.A. Kazimova2,
T.Sh. Ibrahimova2,
Photoluminescence of Ca4Ga2S7:Eu2+ compound		  pdf 

ABSTRACT

The photoluminescence (PhL) properties of chalcogenide Ca4Ga2S7:Eu2+ semiconductors in interval of impulse laser excitation from 10 up to 105 Vt/cm2 at room temperature are studied. PhL of Ca4Ga2S7:Eu2+ compound at excitation by radiation in range 450-575nm is characterized by essential dominance of the band in the spectrum on 660 nm. PhL of Ca4Ga2S7:Eu2+ compound on wave lengths 560 nm and 660nm damps at constant times 258 nsec and 326 nsec correspondingly.

Keywords: chalcogenide semiconductors, high excitation level, luminescence efficiency.
PACS: 76.30, 78.55

Received: 07.12.2020

AUTHORS & AFFILIATIONS

1. Institute of Physics of Belarusian NAS, AZ1143, Minsk, Belarus
2. Institute of Physics of ANAS, AZ1143, H. Javid ave., 131, Baku, Azerbaijan
3. Branch of MSU named after M.V. Lomonosov, Baku, Azerbaijan
E-mail: oktay58@mail.ru 		REFERENCIES

[1]   X. Wu, D. Carkner, H. Hamada, I. Yoshida. Large-screen Flat Panel Displays based on Thick-Dielectric Electroluminescent (TDEL) Technology SID, 2004. vol. XXXV, Book II.- pp.1146-1149.
[2]   B.G. Tagiyev, S.A. Abushov, O.B. Ragiyev. Journal of Applied Spectroscopy, 2010, vol.77, pp.124 – 128.
[3]   R.B. Jabbarov, C. Chartier, B.G. Tagiev, O.B. Tagiev, N.N. Musayeva, C. Barthou. Benalloul P., Journal of Physics and Chemistry of Solids, 2005, vol. 66, № 6, p.1049-1056.
[4]   A.N. Georgobiani, V.V. Sturov, V.I. Tyutyunnikov, B.G. Tagiev, O.B. Tagiev, R.B. Jabbarov. Journal of Physics and Chemistry of Solids. 2003. vol. 64. № 9-10, pp.1519-1924.
[5]   P. Benallol, Carlos Barthou, C. Foussier, A.N. Georgobiani, L.S. Lepnev, Y.N. Emirov, A.N. Gruzintsev, B.G. Tagiev, O.B. Tagiev, R.B. Jabbarov. Journal of the Electrochemical Society.2003. 150(1). G62-G65.
[6]   B.G. Tagiyev, O.B. Tagiyev, R.B. Jabbarov, U.F. Kasumov, N.N. Musayeva. New Technologies-21 century, № 2, 58, 1999.
[7]   SeishiLida, Tamao Matsumoto, N. Mamedov, O. Tagiev, A. Bayramov, R. Jabbarov, B. Tagiev. Jpn,J. Appl. Phys.1997, vol 36, pp. 857- 859, part 2, N7a.
[8]   A.N. Georgobiani, B.G. Tagiev, O.B. Tagiev, R.B. Jabbarov, N.N. Musaeva, U.F. Kasumov. Jpn. J. Appl. Phys., 2000, vol., 39, № 39 -1, pp. 434 – 439.
[9]   P. Benalloul, C. Barthou, J. Benoit. Appl. Phys. Lett., 1993, 63(14), pp. 154-156.
[10]  B.G. Tagiyev, O.B. Tagiyev, R.B. Jabbarov, U.F. Kasumov, N.N. Musayeva. Photoluminescence of Ca4Ga2S7:RRE. Inorganic mat.2001, vol.17, № 12, pp.1430-1434.
[11]  B.G. Tagiyev, U.F. Kasumov, N.N. Musayeva, R.B. Jabbarov, A.S. Abushov. Optical properties of Ca4Ga2S7:Eu2+ compound, PTS, 2000, vol.34, № 10, pp. 1170-1172.
[12]  M.R. Davolos, A. Garcia, C.F. Fousser, and P. Hegenmuller. Luminescence of Eu2+ in Strontium and Barium Thiogallates. J. Solid State Chemistry, 1989, 83, p. 316-323.
[13]  B.D. Urmanov. Photoluminescence of chalcogenide semiconductors Ca0.5Ba0.5Ga2S4:Ce3+, Sm3+ and Ca4Ga2S7:Eu2+ in wide interval of excitation levels by study of InGaN-laser / B.D.Urmanov and others, Collected articles of 12th Belorussian-Russian seminar, Semiconductor lasers and systems on their base, 2019, pp.170 – 173.
[14]  B.D. Urmanov. Increase of color rendering index value of standard white light-emitting diodes because of filling of spectral notches in blue-green and red regions. B.D.Urmanov and others. Collected scientific articles of I international scientific-technical conference “OPTO-MICRO- and MICROWAVE-ELECTRONICS, Minsk, October, 22-26, 2018, pp.44-47.
[15]  B.D. Urmanov. The improvement of white light quality of radiation sources on the base of light-emitting diodes and luminophor mixture. B.D.Urmanov, V.A.Shulenkova, M.S.Leonenya ”Modern problems of physics – 2018”: Proceedings of VIII international school-conference of young scientists and specialists, Minsk, 2018, pp.169-172.
[16]  B.D. Urmanov. White light source with high values of color characteristics on the base of InGaN-LED and luminophors mixture BaGa2S4:Eu2+, CaGa2S4:Eu2+ and (Ca,Sr)2Si5N8:Eu2+ / B.D.Urmanov and others, Theses of reports of XV International scientific conference Youth in Science, 2018, Minsk, 2018, p.163.