Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
Institute for Physical Research of NAS RA ; Armenian State Pedagogical University after Khachatur Abovyan ; National Scientific Laboratory, Yerevan, Armenia
The results of a spectral study of both unalloyed and cerium-doped gadolinium-gallium garnet single crystals (GGG and GGG:Ce) are presented.. The effect of the content of activator ions on the absorption properties of these crystals in the region of 4f-5d transitions of Ce3+ ions were considered. Four different photoluminescence bands of Ce3+ ions were obtained in a GGG:Ce (0.1%) crystal, whose wavelengths are determined by the excitation region of the activator absorption bands. It was shown that the presence of at least four main dodecahedral centers of Ce3+ ions in crystals allows one to explain the concentration shift of the activator absorption bands and the mechanism of formation of luminescence bands. Scintillation emission with a maximum at 550 nm was obtained in GGG:Ce (0.03 and 0.3%) crystals upon their excitation by X-ray radiation (22.163 keV).
oai:arar.sci.am:23578
ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան
Dec 13, 2023
Feb 27, 2020
28
https://arar.sci.am/publication/26351
Հրատարակության անուն | Ամսաթիվ |
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Absorption and Emitting Properties of GGG:Ce Single Crystals in the Range of 4f ↔ 5d Transitions of Ce3+ Ions | Dec 13, 2023 |
A. L. Harutyunyan
Bilen, S. G. A. H. Mkrtchyan L. Sh. Grigoryan H. F. Khachatryan M. Parrot A. V. Sargsyan A. R. Aramyan
Grigoryan, L. Sh. Mkrtchyan, A. R. Saharian, A. A. Mkrtchyan, A. H. Khachatryan, H. F. Grigoryan, M. L. Kotanjyan, V. Kh. Harutyunyan, H. P.
Grigoryan, L. Sh. Saharian, A. A. Mkrtchyan, A. H. Khachatryan, H. F. Grigoryan, M. L. Petrosyan, T. A. Harutyunyan, H. P.
S. K. Nikoghosyan V. V. Harutunyan V. S. Baghdasaryan E. A. Mughnetsyan E. G. Zargaryan A. G. Sarkisyan
V. V. Buniatyan V. M. Hayrapetyan