Combustion synthesis and characterization of blue long lasting phosphor CaAl 2 O 4 : Eu 2+ , Dy 3+ and its novel application in latent fingerprint and lip mark detection

Sharma, Vishal; Das, Amrita; Kumar, Vijay; Kumar, Vinay; Verma, Kartikey; Swart, H.C.

doi:10.1016/j.physb.2017.07.019

Cited by 43 publications

(19 citation statements)

References 20 publications

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“…Also, it was noticed that little quantity of work was reported on the photoluminescence properties of alkali metal ions co-doped with Eu 3+ ions. Addition of little quantity of codopants into the host material leads to increases the crystallinity, creates more oxygen vacancies and removes the charge imbalance problem, due to its low oxidation states and distinct ionic radii [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Bi3+ and Li+ co-doping on the luminescence properties of Zn2TiO4:Eu3+ nanophosphor for display applications

Girish

Prashantha²,

Naik³

et al. 2019

SN Appl. Sci.

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A novel Li + and Bi 3+ ions (0.5-2.0 mol%) co-doped Zn 2 TiO 4 :Eu 3+ (7 mol%) nanophosphors were synthesised by two step combustion route and its effect on luminescence characteristics are described. Addition of Li + and Bi 3+ ions does not introduce new luminescence characteristics but affects the intensity of Eu 3+ related emission. Crystalline structure were characterized by powder X-ray diffraction technique which confirms the formation of a cubic structure and the influence of synthesise conditions on surface morphology was examined by scanning electron microscopic technique. The photoluminescence (PL) properties of Li + and Bi 3+ ions (0.5-2.0 mol%) co-doped Zn 2 TiO 4 :Eu 3+ (7 mol%) show characteristic 4f-4f emissions of Eu 3+ ions at 578, 592, 613 and 654 nm, also reveals that the small quantity of co-dopant ions was highly effective for charge compensation as well as formation of lattice defects to boost the PL emission. Further, Commission International de I'E' clairge chromaticity and color purity results suggests that, the synthesised phosphor can be used as a red component for production of near ultraviolet based wLEDs, solid state lightning and display applications.

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Section: Introductionmentioning

confidence: 99%

Effect of Bi3+ and Li+ co-doping on the luminescence properties of Zn2TiO4:Eu3+ nanophosphor for display applications

Girish

Prashantha²,

Naik³

et al. 2019

SN Appl. Sci.

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“…These phosphor powders were prepared with H 3 BO 3 flux. Compared XRD patterns of two phosphors which were selected based on photoluminescence analyzes among rare earths doped at different concentrations, match the powder diffraction file (JCPDS Card #00-062-0217) for the CaAl 2 O 4 monoclinic structure [7,11], verifying that solid-state reaction synthesis process was successful. Secondary phases do not cause any significant diffraction peaks prominent at the doping amount of rare earths.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 96%

Synthesis and Characterization of CaAl2O4: Dy3+ and CaAl2O4: Sm3+ Phosphor Powders

Karacaoğlu¹

2021

El-Cezeri Fen Ve Mühendislik Dergisi

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Calcium aluminate, CaAl 2 O 4 is efficient and well known host material for inorganic phosphors. Although this host structure is mostly doped with Eu 2+ , different types of rare earth ions have also been studied. In this study, attention was drawn to CaAl 2 O 4 type phosphors doped with Dy 3+ and Sm 3+ at different concentrations. Ca 1-x Al 2 O 4 : Dy 3+x (x= 0.008, 0.012, 0.02, 0.03) and Ca 1-y Al 2 O 4 : Sm 3+ y (y= 0.008, 0.012, 0.02, 0.03) phosphors were synthesized as powder samples through the solid-state reaction method. After heat treatments, monoclinic CaAl 2 O 4 structure was confirmed for all rare earth doped samples by the XRD analysis. PL characteristics of samples depend on activator ion. The PL emission spectra of Dy 3+ doped powder samples show two strong bands at 484 nm and 577 nm which are attributed to a typical 4 F 9/2 → 6 H 15/2 and 4 F 9/2 → 6 H 13/2 transitions of Dy 3+ ions. Sm 3+ activated phosphors have the emission peaks at 565 nm, 604 nm, 649 nm, and 712 nm which are assigned to Sm 3+ transitions: 4

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“…To circumvent these issues, luminescent materials are generally preferred for the development of latent fingerprints at the crime scene. 22–24…”

Section: Introductionmentioning

confidence: 99%

A luminescent Zn-MOF for the detection of explosives and development of fingerprints

et al. 2022

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Combustion synthesis and characterization of blue long lasting phosphor CaAl 2 O 4 : Eu 2+ , Dy 3+ and its novel application in latent fingerprint and lip mark detection

Cited by 43 publications

References 20 publications

Effect of Bi3+ and Li+ co-doping on the luminescence properties of Zn2TiO4:Eu3+ nanophosphor for display applications

Effect of Bi3+ and Li+ co-doping on the luminescence properties of Zn2TiO4:Eu3+ nanophosphor for display applications

Synthesis and Characterization of CaAl2O4: Dy3+ and CaAl2O4: Sm3+ Phosphor Powders

A luminescent Zn-MOF for the detection of explosives and development of fingerprints

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