Eu3+-activated Sr3LaNb3O12 red-emitting phosphors with excellent color stability for high color rendering w-LEDs

Lu, Guangliang; Deng, Bin; Zhang, Yuchen; Wang, Yuan; Lin, Yifang; Jiang, Kezhou; Shao, Yumeng; Zhang, Dan; Yu, Ruijin

doi:10.1007/s10854-022-08649-0

Cited by 5 publications

(4 citation statements)

References 49 publications

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“…The sharp reduction in emission intensity (remained at 4.6%) at 423 K implied the poor thermal stability of sample, which might not be suitable for solid-state lighting applications. The thermal quenching strength of the luminescent materials was usually evaluated by the activation energy (Δ E ), which can be defined as: 56,57 where I 0 and I are luminescence intensities at the initial temperature (303 K) and temperature ( T ) whereas k is the Boltzmann constant. The degree of fitting of the plot of 1/ kT vs. ln( I 0 / I − 1) in the temperature range of 303–423 K was −0.43, indicating that the Δ E in the thermal quenching of the SITO:Mn 4+ phosphors was about 0.43 eV as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Deep-red-emitting phosphors of Mn⁴⁺-activated tantalite for high-sensitivity lifetime thermometry and security films

Hua

2023

Dalton Trans.

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Section: Resultsmentioning

confidence: 99%

Section: Dalton Transactions Papermentioning

confidence: 99%

Deep-red-emitting phosphors of Mn⁴⁺-activated tantalite for high-sensitivity lifetime thermometry and security films

Hua

2023

Dalton Trans.

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“…73,74 Eu 3+ activated Sr 3 LaNb 3 O 12 red-emitting phosphors with high color reliability for high color rendering WLEDs were created using a conventional solid-state technique. 75 The solid-state fabrication approach can be divided into two steps: a preliminary treatment and crystal growth. Figure 6 shows the conventional solid-state reaction method.…”

Section: Synthesis Methodsmentioning

confidence: 99%

Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

Farooq,

Rafiq,

Shah

et al. 2023

ECS J. Solid State Sci. Technol.

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The manuscript focuses on the concept of nano-phosphors, a remarkable type of material that has been widely explored because of their diverse promising applications. Progress in the development of such nano-phosphors as luminescent materials has received significant research attention. The white-light-emitting diodes (WLEDs) have grown dramatically and represent the most intriguing lighting source of the twenty-first century. The contribution of rare-Earth (RE) ions to lighting technology is explicitly addressed. The additional physical characteristics of white light that are addressed in the present manuscript comprise the correlated color temperature (CCT), the color rendering index (CRI), and the Commission International de’ Eclairage (CIE) chromaticity coordinates. Multiple synthesis methods employed around the globe to produce such industrially important nano-phosphors along with more specialized and impactful techniques to characterize all such materials are thus thoroughly explored. Also, the various technologically significant applications of these materials are described. The evolution of these potentially suitable luminescent materials for WLEDs and their white-light characteristics is also outlined. The manuscript presents a comprehensive overview of the advancement and innovation of nano-phosphors, their application fields and the significant milestones of artificial lighting toward modernization.

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“…[6,7]. The recent Eu -doped phosphors are NaYbF 4 :Eu 3+ , Ca 8 NaBi(PO 4 ) 6 F 2 :Eu 3+ , Sr 3 LaNb 3 O 12 :Eu 3+ [8][9][10].The challenges of red emitting diodes are poor efficiency, poor color stability and limited brightness when compared to other colors of LEDs [11]. This has led to the search for a new phosphor.…”

Section: Introductionmentioning

confidence: 99%

A Novel Warm Red-Emission of SrLa0.9Eu0.1AlO4 Phosphor obtained by Combustion Method.

Etafo

2024

JER

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In this study, A novel warm redemitting phosphor Strontium Lanthanum Aluminate (SrLaAlO 4 :xEu ) doped with the trivalent Europium ions were synthesized via urea-based solution combustion method. The x mol% doping concentration of Eu 3+ was varied in x = 0.0, and 0.01 mol%. X-ray diffraction analysis show that all samples exhibit the reflected peaks of the tetragonal structure SrLaAlO 4 matching with the JCPDS No 24-1125 standard card. The SEM analysis show irregular grains for all samples with mean sizes which reduces from 0.996 to 0.909 µm. The optical band gap of 4.47 eV and refractive of 1.79 were obtained from the Tauc plots from the absorbance spectra. Photoluminescence spectra of the SrLaAlO 4 : 0.10Eu, under 279 nm excitation, show a very intense red emission peak band centered at 622 nm due to the 5 D 0 -7 F 2 transition of Eu 3+ . The CIE chromaticity color coordinates were calculated and found to have a color purity and CCT with 53.1 % and 2057 K respectively. All the results clearly indicate that Eu-doped SrLaAlO 4 phosphors can be used as a red color component for solid state lighting devices, especially for the fabrication of near-UV based white LEDs, bio-imaging, and labeling.

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Eu3+-activated Sr3LaNb3O12 red-emitting phosphors with excellent color stability for high color rendering w-LEDs

Cited by 5 publications

References 49 publications

Deep-red-emitting phosphors of Mn⁴⁺-activated tantalite for high-sensitivity lifetime thermometry and security films

Deep-red-emitting phosphors of Mn⁴⁺-activated tantalite for high-sensitivity lifetime thermometry and security films

Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

A Novel Warm Red-Emission of SrLa0.9Eu0.1AlO4 Phosphor obtained by Combustion Method.

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Eu3+-activated Sr3LaNb3O12 red-emitting phosphors with excellent color stability for high color rendering w-LEDs

Cited by 5 publications

References 49 publications

Deep-red-emitting phosphors of Mn4+-activated tantalite for high-sensitivity lifetime thermometry and security films

Deep-red-emitting phosphors of Mn4+-activated tantalite for high-sensitivity lifetime thermometry and security films

Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

A Novel Warm Red-Emission of SrLa0.9Eu0.1AlO4 Phosphor obtained by Combustion Method.

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Deep-red-emitting phosphors of Mn⁴⁺-activated tantalite for high-sensitivity lifetime thermometry and security films

Deep-red-emitting phosphors of Mn⁴⁺-activated tantalite for high-sensitivity lifetime thermometry and security films