Abstract
Crystals with the compositions Rb0.993Pr0.007Pb2Br5 and Rb0.993Pr0.007Pb2Cl2.5Br2.5 have been grown by the Bridgman method, and the absorption, luminescence excitation, and photoluminescence spectra of these materials in the case of the Stokes mechanism of optical excitation in the blue spectral region have been analyzed. The intensity of the visible luminescence bands of the Pr3+ praseodymium ions has been shown to depend on the nature of the nearest neighbor atoms in their crystalline environment. This effect is tentatively attributed to changes in the probability of radiative transitions in the rare-earth ion. The temperature dependences of emission intensity obtained for the crystals demonstrate that the contributions of nonradiative recombination channels depend on the transition, which also leads to changes in the emission color of the compounds.
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Chawla, S., Roy, T., Majumder, K., and Yadav, A., Red enhanced YAG:Ce,Pr nanophosphor for white LEDs, J. Experim. Nanosci., 2014, vol. 9, no. 8, pp. 776–784.
Manashirov, O.Ya., Zvereva, E.M., and Lobanov, A.N., Luminescence of (Y1–xErx)2O2S solid solutions under UV excitation, Inorg. Mater., 2016, vol. 52, no. 2, pp. 186–193.
Zhang, F., Bi, Z., Huang, A., and Xiao, Z., Luminescence and Judd–Ofelt analysis of the Pr3+ doped fluorotellurite glass, J. Lumin., 2015, vol. 160, pp. 85–89.
Gorelik, V.S., Ivicheva, S.N., Lepnev, L.S., and Litvinova, A.O., Tb3+ photoluminescence in mesoporous glasses, terbium nitrate and terbium chloride hexahydrates, and coordination compounds, Inorg. Mater., 2016, vol. 52, no. 8, pp. 828–835.
Lichkova, N.V., Zagorodnev, V.N., Okhrimchuk, A.G., Butvina, L.N., Irzhak, D.V., and Karandashev, V.K., Preparation of Pr-and Dy-doped Rb1–xMxPb2Cl5–yBry (M = K, Cs) crystals, Inorg. Mater., 2014, vol. 50, no. 2, pp. 197–204.
Lichkova, N.V., Zagorodnev, V.N., Butvina, L.N., Okhrimchuk, A.G., and Shestakov, A.V., Preparation and optical properties of rare-earth-activated alkali metal lead chlorides, Inorg. Mater., 2006, vol. 42, no. 1, pp. 81–88.
Gruzintsev, A.N., Red, green, and blue light-emitting thin-film electroluminescent structures with memory effect made on alkaline-earth metal sulfides doped by rare-earth elements, Russ. Microelectron., 1998, vol. 27, no. 5, pp. 304–310.
Islamov, A.Kh., Nuritdinov, I., Khaiitov, I.A., Khaiitboev, I.A., Faizullaev, B.S., Esanov, Z.U., and Eshbekov, A.A., Gamma luminescence of Pr-and Ce-doped yttrium aluminum garnet crystals, Inorg. Mater., 2016, vol. 52, no. 5, pp. 490–494.
Baibekov, E.I., Multiphonon relaxation of optical excitations in CsCdBr3:Pr3+ and LiYF4:Nd3+ crystals, Phys. Solid State, 2010, vol. 52, no. 2, pp. 246–253.
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Original Russian Text © A.N. Gruzintsev, 2018, published in Neorganicheskie Materialy, 2018, Vol. 54, No. 7, pp. 688–693.
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Gruzintsev, A.N. Spectral Characteristics and Thermal Quenching of Luminescence in Rb0.993Pr0.007Pb2Br5 and Rb0.993Pr0.007Pb2Cl2.5Br2.5 Crystals. Inorg Mater 54, 652–659 (2018). https://doi.org/10.1134/S0020168518070038
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DOI: https://doi.org/10.1134/S0020168518070038