NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2018, 9 (2), P. 259–265
Ca1-x-yYbxPryF2+x+y solid solution powders as a promising materials for crystalline silicon solar energetics
S.V. Kuznetsov – Prokhorov General Physics Institute, RAS, 38 Vavilova str., Moscow, 119991 Russia; kouznetzovsv@gmail.com
O. A. Morozov – Kazan Federal University, 18 Kremljovskaya, Kazan, 420008 Russia
V. G. Gorieva – Kazan Federal University, 18 Kremljovskaya, Kazan, 420008 Russia
M. N. Mayakova – Prokhorov General Physics Institute, RAS, 38 Vavilova str., Moscow, 119991 Russia
M. A. Marisov – Kazan Federal University, 18 Kremljovskaya, Kazan, 420008 Russia
V.V. Voronov – Prokhorov General Physics Institute, RAS, 38 Vavilova str., Moscow, 119991 Russia
A. D. Yapryntsev – Kurnakov Institute of General and Inorganic Chemistry, RAS, 31 Leninsky pr., Moscow,119991 Russia
V. K. Ivanov – Kurnakov Institute of General and Inorganic Chemistry, RAS, 31 Leninsky pr., Moscow,119991 Russia
E. I. Madirov – Kazan Federal University, 18 Kremljovskaya, Kazan, 420008 Russia
A. S. Nizamutdinov – Kazan Federal University, 18 Kremljovskaya, Kazan, 420008 Russia
V.V. Semashko – Kazan Federal University, 18 Kremljovskaya, Kazan, 420008 Russia
P. P. Fedorov – Prokhorov General Physics Institute, RAS, 38 Vavilova str., Moscow, 119991 Russia
We have synthesized single-phase powders of Ca1-x-yYbxPryF2+x+y solid solutions with an average particle size of about 35 nm by coprecipitation from aqueous nitrate solutions. After annealing at 600 °C during 1 hour, the particle size was increased up to 150–200 nm. Individual luminescence bands of praseodymium are distinguishable in the luminescence spectrum. The intensity of the luminescence of ytterbium increased by a factor of 1000 in comparison with the unannealed samples. The highest luminescence intensity of ytterbium was detected for the Ca0.9495Yb0.0500Pr0.0005F2.0505.
Keywords: calcium fluoride, rare earths fluorides, chemical synthesis, nanoparticles, down-conversion luminophores, solar cells.
PACS 42.70.-a, 81.20.Fw
DOI 10.17586/2220-8054-2018-9-2-259-265
