Orange-red-emitting Sm3+-doped double perovskite CaY0·5Ta0·5O3 phosphor with highly thermal stability for white LED applications

Ke, Yuee; Zhao, Baokui; Ding, Ka; Wang, Yu; Shu, Shuang; Deng, Bin; Wang, Guodong; Yu, Ruijin

doi:10.1016/j.jlumin.2019.116997

Cited by 25 publications

(4 citation statements)

References 43 publications

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“…[168] However, tuning the white color of their LEDs requires careful control of the annealing process. A more practical way for tunable color temperature involves a combination of blue PeLEDs and orangeemitting perovskite [169,170] or nonperovskite phosphors. [171][172][173] On the other hand, blue LED chips covered with red and green perovskite color converters can also yield white emission, where perovskite quantum dots are embedded in organic silica shells to prevent contact with moisture and oxygen.…”

Section: Toward White Emissionmentioning

confidence: 99%

Halide Perovskite Light‐Emitting Diode Technologies

Anaya

Abfalterer

et al. 2021

Advanced Optical Materials

131

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received his B.Eng. degree from Imperial College London in 2017 and then received his M.Phil. degree from the University of Cambridge in 2018. He is pursuing his Ph.D. degree at the University of Cambridge with research interests in perovskite light-emitting and imaging algorithm applications. Miguel Anaya is a research fellow at Darwin College and a Marie Curie Fellow in the Cavendish Laboratory at the University of Cambridge. He completed his Ph.D. at the Spanish National Research Council in 2018, with recognition from the Spanish Royal Society of Physics as the Best Thesis in Experimental Physics. He leads a subgroup at the StranksLab focused on the modeling, fabrication, and characterization of perovskite-based light-emitting devices and sensors.

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Section: Toward White Emissionmentioning

confidence: 99%

Halide Perovskite Light‐Emitting Diode Technologies

Anaya

Abfalterer

et al. 2021

Advanced Optical Materials

131

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“…Early research indicated that the 4f-4f electron jumps of Sm 3+ from a higher state 4 G 5/2 to a lower state 6 H J ( J = 5/2, 7/2, 9/2, 11/2) under the excitation of near-UV light emitted orange-red emission components in a wavelength ranging from 500 to 700 nm, which is suitable for solid-state lighting applications. 8 Among different phosphors reported in literature, Ca 3 Gd(AlO) 3 (BO 3 ) 4 : Sm 3+ phosphors had a high color purity of 95.6% 9 and the Ba 3 Y 4 O 9 :Sm 3+ phosphors demonstrated an excellent thermal stability of 74.25% at 473 K. 10 YCa 4 O(BO 3 ) 3 :Sm 3+ phosphors had a high quantum yield of 76.54% and potential application in w-LEDs. 11 Alternatively the coordination environment can strongly influence the luminescence properties of rare-earth ions.…”

Section: Introductionmentioning

confidence: 99%

Novel Sm³⁺-doped La₃Ga₅MO₁₄ (M = Si or Ge) phosphors for indoor illumination: effects of M cations on photoluminescence

Li,

Ding,

Tang

et al. 2024

Dalton Trans.

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“…To date, several researchers have reported a series of Ln 3+ -activated phosphors with f – f emission excited by UV lights and cathode rays, such as oxides-, nitrides-, fluorides-, and sulfides-based phosphors with f – f emissions of Ln 3+ , such as Pr 3+ , Eu 3+ , Er 3+ (red), Sm 3+ (orange), Tb 3+ (green), and Tm 3+ (blue). − The f – f emissions in these phosphors were directly realized by the electronic transitions between the 4 f levels. However, such an excitation process is not suitable for practical phosphors for white LEDs because the electric dipole transitions between the 4 f levels in free Ln 3+ are not possible in principle.…”

Section: Introductionmentioning

confidence: 99%

Control of the Emission and Excitation Energies in Pr³⁺-Activated Perovskite Oxide–Oxynitrides by Bandgap Engineering

Sato,

Odahara,

Yanamoto

et al. 2023

Chem. Mater.

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In this paper, we propose a new concept for the material design for near-ultraviolet (UV)-excited narrow-band phosphors with f−f emissions by bandgap engineering. The perovskite oxide−oxynitride solid solutions, namely, CaTa 1−x Zr x O 2+x N 1−x , were used as host materials to demonstrate our design principle. Photoluminescence (PL) excitation and emission control were systematically performed on Pr 3+ -activated CaTa 1−x Zr x O 2+x N 1−x , where x is in the range of 0.0−1.0. Tuning the PL excitation wavelength was archived over a large wavelength range by tailoring the bandgap of CaTa 1−x Zr x O 2+x N 1−x with different Ta/Zr and N/O ratios. Notably, an intense red emission from Pr 3+ was observed at 614 nm under the near-UV irradiation of 375 nm when the bandgap of the host material CaTa 1−x Zr x O 2+x N 1−x (x = 0.75) was approximately 3.0 eV. Such a red emission peak was assigned to the electron transition between the 1 D 2 and 3 H 4 levels of the Pr 3+ ions. In contrast, when the bandgap was above 3.0 eV, the PL emission spectra were systematically varied with the bandgap of the host materials. Some emission peaks from the electron transition between 3 P 0 and 3 H 4 , 3 H 5 , and 3 F 2 levels were observed in the samples with x = 0.90 and x = 0.95. Our results indicate that the PL properties of the phosphors with f−f emission are systematically controlled based on the bandgap engineering for the host materials.

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Orange-red-emitting Sm3+-doped double perovskite CaY0·5Ta0·5O3 phosphor with highly thermal stability for white LED applications

Cited by 25 publications

References 43 publications

Halide Perovskite Light‐Emitting Diode Technologies

Halide Perovskite Light‐Emitting Diode Technologies

Novel Sm³⁺-doped La₃Ga₅MO₁₄ (M = Si or Ge) phosphors for indoor illumination: effects of M cations on photoluminescence

Control of the Emission and Excitation Energies in Pr³⁺-Activated Perovskite Oxide–Oxynitrides by Bandgap Engineering

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Orange-red-emitting Sm3+-doped double perovskite CaY0·5Ta0·5O3 phosphor with highly thermal stability for white LED applications

Cited by 25 publications

References 43 publications

Halide Perovskite Light‐Emitting Diode Technologies

Halide Perovskite Light‐Emitting Diode Technologies

Novel Sm3+-doped La3Ga5MO14 (M = Si or Ge) phosphors for indoor illumination: effects of M cations on photoluminescence

Control of the Emission and Excitation Energies in Pr3+-Activated Perovskite Oxide–Oxynitrides by Bandgap Engineering

Contact Info

Product

Resources

About

Novel Sm³⁺-doped La₃Ga₅MO₁₄ (M = Si or Ge) phosphors for indoor illumination: effects of M cations on photoluminescence

Control of the Emission and Excitation Energies in Pr³⁺-Activated Perovskite Oxide–Oxynitrides by Bandgap Engineering