Abstract
Full text: Eu{sup 2+} ion give broad-band emission due to f-d transitions. The 5d orbital are not shelled from the host lattice by any occupied orbital. Therefore the wavelength positions of the emission bands depend on host and change from hear UV to red. With increasing crystal field strength, the emission bands shift to longer wavelength. The broad band absorption and luminescence of Eu{sup 2+} is parity-and spin-allowed and lifetime is sub-microseconds. In resent years, many efforts have been devoted to luminescence studies of thio gallates and thio-aluminates doped with rare-earth ions because of their chemical stability in ambient environments. In ternary compounds both the ligand field at the divalent cation site and the nephelauxetic effect are reduced by the presence of trivalent or tetravalent ions. This effect is more pronounced with Al than with Ga. In a same family of compounds, the emission band generally shifts to shorter wavelengths with increasing M{sup II}/M{sup IV} or M{sup VI}/M{sup III} ratio. In this paper we revisited the luminescence of the phosphors CaGa{sub 2}S{sub 4}, BaGa{sub 2}S{sub 4}, BaAl{sub 2}S{sub 4} activated by Eu{sup 2+} ion. Influence of temperature and Eu{sup 2+} concentration on the luminescence characteristics of these phosphors are studied.
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Jabbarov, R B;
Tagiev, B G;
Tagiev, O B;
Musaeva, N N;
[1]
Benalloul, P;
Barthou, C
[2]
- Inst. of Physics Azerbaijan National Academy of Sciences, Baku (Azerbaijan)
- Univ. P. et. M. Curie, Paris (France)
Citation Formats
Jabbarov, R B, Tagiev, B G, Tagiev, O B, Musaeva, N N, Benalloul, P, and Barthou, C.
Possibility of RGB emission by Eu{sup 2+} ion doped M{sup II}M{sup III}M{sup VI} phosphors for color inorganic electro- luminescent displays.
Kazakstan (Kazakhstan): N. p.,
2004.
Web.
Jabbarov, R B, Tagiev, B G, Tagiev, O B, Musaeva, N N, Benalloul, P, & Barthou, C.
Possibility of RGB emission by Eu{sup 2+} ion doped M{sup II}M{sup III}M{sup VI} phosphors for color inorganic electro- luminescent displays.
Kazakstan (Kazakhstan).
Jabbarov, R B, Tagiev, B G, Tagiev, O B, Musaeva, N N, Benalloul, P, and Barthou, C.
2004.
"Possibility of RGB emission by Eu{sup 2+} ion doped M{sup II}M{sup III}M{sup VI} phosphors for color inorganic electro- luminescent displays."
Kazakstan (Kazakhstan).
@misc{etde_20657762,
title = {Possibility of RGB emission by Eu{sup 2+} ion doped M{sup II}M{sup III}M{sup VI} phosphors for color inorganic electro- luminescent displays}
author = {Jabbarov, R B, Tagiev, B G, Tagiev, O B, Musaeva, N N, Benalloul, P, and Barthou, C}
abstractNote = {Full text: Eu{sup 2+} ion give broad-band emission due to f-d transitions. The 5d orbital are not shelled from the host lattice by any occupied orbital. Therefore the wavelength positions of the emission bands depend on host and change from hear UV to red. With increasing crystal field strength, the emission bands shift to longer wavelength. The broad band absorption and luminescence of Eu{sup 2+} is parity-and spin-allowed and lifetime is sub-microseconds. In resent years, many efforts have been devoted to luminescence studies of thio gallates and thio-aluminates doped with rare-earth ions because of their chemical stability in ambient environments. In ternary compounds both the ligand field at the divalent cation site and the nephelauxetic effect are reduced by the presence of trivalent or tetravalent ions. This effect is more pronounced with Al than with Ga. In a same family of compounds, the emission band generally shifts to shorter wavelengths with increasing M{sup II}/M{sup IV} or M{sup VI}/M{sup III} ratio. In this paper we revisited the luminescence of the phosphors CaGa{sub 2}S{sub 4}, BaGa{sub 2}S{sub 4}, BaAl{sub 2}S{sub 4} activated by Eu{sup 2+} ion. Influence of temperature and Eu{sup 2+} concentration on the luminescence characteristics of these phosphors are studied. These dates will be useful to evaluate the quality oi the powder or thin films prepared for devices.}
place = {Kazakstan (Kazakhstan)}
year = {2004}
month = {Jul}
}
title = {Possibility of RGB emission by Eu{sup 2+} ion doped M{sup II}M{sup III}M{sup VI} phosphors for color inorganic electro- luminescent displays}
author = {Jabbarov, R B, Tagiev, B G, Tagiev, O B, Musaeva, N N, Benalloul, P, and Barthou, C}
abstractNote = {Full text: Eu{sup 2+} ion give broad-band emission due to f-d transitions. The 5d orbital are not shelled from the host lattice by any occupied orbital. Therefore the wavelength positions of the emission bands depend on host and change from hear UV to red. With increasing crystal field strength, the emission bands shift to longer wavelength. The broad band absorption and luminescence of Eu{sup 2+} is parity-and spin-allowed and lifetime is sub-microseconds. In resent years, many efforts have been devoted to luminescence studies of thio gallates and thio-aluminates doped with rare-earth ions because of their chemical stability in ambient environments. In ternary compounds both the ligand field at the divalent cation site and the nephelauxetic effect are reduced by the presence of trivalent or tetravalent ions. This effect is more pronounced with Al than with Ga. In a same family of compounds, the emission band generally shifts to shorter wavelengths with increasing M{sup II}/M{sup IV} or M{sup VI}/M{sup III} ratio. In this paper we revisited the luminescence of the phosphors CaGa{sub 2}S{sub 4}, BaGa{sub 2}S{sub 4}, BaAl{sub 2}S{sub 4} activated by Eu{sup 2+} ion. Influence of temperature and Eu{sup 2+} concentration on the luminescence characteristics of these phosphors are studied. These dates will be useful to evaluate the quality oi the powder or thin films prepared for devices.}
place = {Kazakstan (Kazakhstan)}
year = {2004}
month = {Jul}
}