2023
DOI: 10.1039/d3dt00179b
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Synthesis of a Sm3+-doped YGa1.5Al1.5(BO3)4 phosphor via a mechanical activation-assisted solid-state reaction

Abstract: A Sm3+-doped YGa1.5Al1.5(BO3)4 (abbreviated as YGAB) phosphor was synthesized via solid-state reaction with mechanical activation assistance in a high-energy density stirred bead mill. The samples were characterized by laser particle...

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Cited by 10 publications
(3 citation statements)
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References 57 publications
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“…However, no emissions of Sm 3+ were observed under 260 nm excitations which indicated no CT between O 2– and Sm (III) ions in only Sm 3+ doped LTB (Figure S7). Importantly, the PL emission spectra of codoped LTB samples recorded with uranyl excitations (at 260 and 330 nm) showed Sm 3+ emissions at 563 ( 4 G 5/2 → 6 H 5/2 ), 600 ( 4 G 5/2 → 6 H 7/2 ), 648 ( 4 G 5/2 → 6 H 9/2 ), and 707 ( 4 G 5/2 → 6 H 11/2 ) that revealed the existence of ET between uranyl and Sm 3+ ions. , No spectral changes (except intensity) were observed in the Sm 3+ emission profile under different excitation wavelengths. The intensity of the UO 2 2+ excitation band at 260 nm showed a decrease on the addition of Sm 3+ ions (Figure a) which confirmed the ET from UO 2 2+ → Sm 3+ .…”
Section: Results and Discussionmentioning
confidence: 90%
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“…However, no emissions of Sm 3+ were observed under 260 nm excitations which indicated no CT between O 2– and Sm (III) ions in only Sm 3+ doped LTB (Figure S7). Importantly, the PL emission spectra of codoped LTB samples recorded with uranyl excitations (at 260 and 330 nm) showed Sm 3+ emissions at 563 ( 4 G 5/2 → 6 H 5/2 ), 600 ( 4 G 5/2 → 6 H 7/2 ), 648 ( 4 G 5/2 → 6 H 9/2 ), and 707 ( 4 G 5/2 → 6 H 11/2 ) that revealed the existence of ET between uranyl and Sm 3+ ions. , No spectral changes (except intensity) were observed in the Sm 3+ emission profile under different excitation wavelengths. The intensity of the UO 2 2+ excitation band at 260 nm showed a decrease on the addition of Sm 3+ ions (Figure a) which confirmed the ET from UO 2 2+ → Sm 3+ .…”
Section: Results and Discussionmentioning
confidence: 90%
“…Phosphor-converted light-emitting diodes (pc-LEDs) have emerged out as a potential solution to alleviate the crisis scenario triggered by the huge energy demand for lighting purposes. In past decades, scientists worldwide have explored diverse lanthanide ion (Ln 3+ )-doped host matrices to design next-generation smart pc-LEDs to meet the requirements of high luminous efficiency, eco-friendliness, high color rendering index (CRI), optimum correlated color temperature (CCT), and long-serving lifetimes for solid-state lighting applications. , The deficiency of the red component is the major bottleneck in the development of commercial white light-emitting pc-LEDs with a combination of YAG:Ce and blue (In,Ga)N chip in order to achieve warm pc-LEDs with low CCT . The quest for red-emitting phosphors to compensate for the red spectral region aroused huge scientific interest in exploring novel Eu 3+ and Sm 3+ -based phosphors. Sm 3+ phosphors are promising for achieving orange red emissions on near ultraviolet (NUV) and blue excitations .…”
Section: Introductionmentioning
confidence: 99%
“…1,2 Phosphor-converted white light-emitting diodes ( pc-WLEDs) are considered to be a promising solidstate lighting source for their emerging advantages of high efficiency, energy saving, environmental friendliness, etc. [3][4][5] Two approaches are employed to develop commercialized WLEDs. The first method is fabricating blue InGaN chips with yellow phosphors, typically Y 3 Al 5 O 12 :Ce 3+ .…”
Section: Introductionmentioning
confidence: 99%