Investigation of luminescent properties inherent to SrTiO₃:Pr³⁺ luminophor with Al impurity

• Опубліковано в: : Semiconductor Physics Quantum Electronics & Optoelectronics
• Дата: 2011
• Автори: Marchylo, O.M., Zavyalova, L.V., Nakanishi, Y., Kominami, H., Belyaev, A.E., Svechnikov, G.S.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2011
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/117792
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Investigation of luminescent properties inherent to SrTiO₃:Pr³⁺ luminophor with Al impurity / O.M. Marchylo, L.V. Zavyalova, Y. Nakanishi, H. Kominami, A.E. Belyaev, G.S. Svechnikov // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2011. — Т. 14, № 4. — С. 461-464. — Бібліогр.:11 назв. — англ.

The red-emitting SrTiO₃:Pr³⁺,Al luminophors that can be used for the white
 light emitting diodes (LEDs) were prepared using the sol-gel method. The starting
 materials were SrCl₂, Ti (O – i – C₃H₇)₄, Al(NO₃)₃·9H₂O and PrCl₃. The reaction
 between them results in a mixture of compounds that transform into single-phase
 SrTiO₃:Pr³⁺,Al after annealing in air. Displacement of Ti out of the SrTiO₃ lattice caused
 by substitution with Al and formation of individual crystalline TiO₂ phase (rutile) were
 observed. PL spectra show the high-intense red peak (λ = 617 nm), the same high-intense
 peak with the full width at half maximum (FWHM) 20 nm was found in
 cathodoluminescence spectra. The increase of the aluminium concentration from 0 up to
 15 mol.% leads to approximately two-fold increase in the luminance. The latter increases
 from 180 up to 350 cd/m²
 at the anode voltage 10 kV and current density 30 μA/cm²
 .