Crystal Structure and Optical Properties of Lu3Al5O12:Ce3+ Obtained by a Colloidal Chemical Synthesis Method

Samoylenko, Sergey Alekseevych; Tret’yak, E. V.; Шевченко, Г. П.; Кичанов, С. Е.; Козленко, Д. П.; Малашкевич, Г. Е.; Stupak, A. P.; Савенко, Б. Н.

doi:10.1007/s10812-015-0049-4

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…The thermal stabilities of luminescence of the prepared phosphors are confirmed by measuring the intensity changes of the emission spectra at different temperatures. It is noted that various factors result in the temperature dependence of the emission spectra . In fact, the emission intensities and luminescence lifetimes of the Bi 3+ and Mn 4+ ions are closely related to the temperature.…”

Section: Resultsmentioning

confidence: 99%

“…It is noted that various factors result in the temperature dependence of the emission spectra. 63 In fact, the emission intensities and luminescence lifetimes of the Bi 3+ and Mn 4+ ions are closely related to the temperature. However, the working temperature of pc-WLEDs can reach 150 °C, which has a great influence on the luminescence intensity and lifetime.…”

Section: Resultsmentioning

confidence: 99%

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Luminescence and Energy-Transfer Properties in Bi³⁺/Mn⁴⁺-Codoped Ba₂GdNbO₆ Double-Perovskite Phosphors for White-Light-Emitting Diodes

et al. 2019

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Currently, the study of Mn 4+ -doped oxide red phosphor is a hot research topic to solve the lack of red component in phosphor-converted whitelight-emitting diodes (pc-WLEDs). In this Article, we designed Gd 3+ /Nb 5+ cation substitution by Bi 3+ /Mn 4+ in Ba 2 GdNbO 6 with double-perovskite structure based on the radius and coordination of the cations through hightemperature solid-state reaction. The phase purity and microstructure of double-perovskite Ba 2 GdNbO 6 :Bi 3+ ,Mn 4+ phosphors were characterized by Xray diffraction and scanning electron microscopy examination. The crystal structures were also determined by the Rietveld refinement, and the photoluminescence (PL) properties were systematically studied. Bi 3+ and Mn 4+ ions can be effectively doped in the Ba 2 GdNbO 6 matrix with an optical band gap of 3.94 eV. Upon 315 nm UV excitation, the Ba 2 GdNbO 6 :Bi 3+ ,Mn 4+ phosphor shows two emission bands at 464 nm from Bi 3+ and 689 nm from Mn 4+ , respectively. By the design of Bi 3+ → Mn 4+ energy transfer, systematic luminescence tuning from blue to red could be achieved because of spectral overlap between the emission spectrum of Bi 3+ and the excitation spectrum of Mn 4+ . The corresponding mechanism of the Bi 3+ → Mn 4+ energy-transfer process was investigated in detail by the fluorescence decays and PL spectra. The red emission intensity of Mn 4+ has been greatly improved by Bi 3+ → Mn 4+ energy transfer. Moreover, the phonon vibration and zero phonon line of Mn 4+ were studied through temperature-dependent PL. Finally, a WLED was fabricated using a 460 nm blue chip with a yellow YAG:Ce 3+ phosphor and a red Ba 2 GdNbO 6 :0.01Bi 3+ ,0.01Mn 4+ phosphor, which has a low correlated color temperature (3550 K) and a high color rendering index (89.6). The above results imply that the improved red emission phosphors have a potential application in warm pc-WLED lighting.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Luminescence and Energy-Transfer Properties in Bi³⁺/Mn⁴⁺-Codoped Ba₂GdNbO₆ Double-Perovskite Phosphors for White-Light-Emitting Diodes

et al. 2019

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Rare Earth-Doped Phosphors for White Light-Emitting Diodes

Sato

Kim

Shimomura

et al. 2016

Handbook on the Physics and Chemistry of Rare Earths

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Raman spectroscopy of Ce3+ doped Lu3Al5O12 single crystalline films grown onto Y3Al5O12 substrate

Dewo

Gorbenko

Zorenko

et al. 2019

Optical Materials: X

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Crystal Structure and Optical Properties of Lu3Al5O12:Ce3+ Obtained by a Colloidal Chemical Synthesis Method

Cited by 5 publications

References 17 publications

Luminescence and Energy-Transfer Properties in Bi³⁺/Mn⁴⁺-Codoped Ba₂GdNbO₆ Double-Perovskite Phosphors for White-Light-Emitting Diodes

Luminescence and Energy-Transfer Properties in Bi³⁺/Mn⁴⁺-Codoped Ba₂GdNbO₆ Double-Perovskite Phosphors for White-Light-Emitting Diodes

Rare Earth-Doped Phosphors for White Light-Emitting Diodes

Raman spectroscopy of Ce3+ doped Lu3Al5O12 single crystalline films grown onto Y3Al5O12 substrate

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Crystal Structure and Optical Properties of Lu3Al5O12:Ce3+ Obtained by a Colloidal Chemical Synthesis Method

Cited by 5 publications

References 17 publications

Luminescence and Energy-Transfer Properties in Bi3+/Mn4+-Codoped Ba2GdNbO6 Double-Perovskite Phosphors for White-Light-Emitting Diodes

Luminescence and Energy-Transfer Properties in Bi3+/Mn4+-Codoped Ba2GdNbO6 Double-Perovskite Phosphors for White-Light-Emitting Diodes

Rare Earth-Doped Phosphors for White Light-Emitting Diodes

Raman spectroscopy of Ce3+ doped Lu3Al5O12 single crystalline films grown onto Y3Al5O12 substrate

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Product

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Luminescence and Energy-Transfer Properties in Bi³⁺/Mn⁴⁺-Codoped Ba₂GdNbO₆ Double-Perovskite Phosphors for White-Light-Emitting Diodes

Luminescence and Energy-Transfer Properties in Bi³⁺/Mn⁴⁺-Codoped Ba₂GdNbO₆ Double-Perovskite Phosphors for White-Light-Emitting Diodes