RETRACTED ARTICLE: Investigation of structural, luminescence, and anti-bacterial properties of novel Zn1−xEuxAl2−yO4Sry phosphor

Verma, Akshkumar; Bisen, D. P.; Nema, Shubham; Sahu, Ishwar Prasad; Ray, Tapas; Brahme, Nameeta; Verma, Ashish; Singh, Arun Kumar

doi:10.1007/s10854-022-08486-1

Cited by 4 publications

(2 citation statements)

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“…In the last two decades, researchers, scientists, and technologists have utilised both organic and inorganic nanoparticles as antibacterial agents due to their ecofriendliness and enhanced material durability. From our study we can conclude that the Sr 1−x Al 2 O 4 :Eu x (x = 0.00, and 0.05) phosphor (SAE 0.00 and SAE 0.05 phosphor) synthesized by urea fuel combustion method is ecofriendly material, because it did not release any high toxic gas during synthesis process, therefore the synthesized material is applicable as an optical coating agent for making solid state luminescent devices 14,15 . It is also useful in food preservation, safe cosmetics preparation, medical devices and water treatment.…”

Section: Photoluminescence (Pl) Analysismentioning

confidence: 76%

“…It is an important parameter to define how well the spectrum of the light source is composed. An excellent quality light source has a CRI range from 75 to 100, a good quality source of light has CRI range from 56 to 75, a fair quality source of light has CRI range from 55 to 65, and a poor quality source of light has CRI range from 0 to 55 are observed 14 . In this work, we have calculated the CRI value by Eq.…”

Section: Photoluminescence (Pl) Analysismentioning

confidence: 99%

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Investigation of structural, optical, morphological, photoluminescence and antimicrobial properties of SrAl2O4:Eu2+ nanophosphor by using urea fuel combustion method

Litoriya

Kurmi

Verma

2023

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In the present study, the Sr1−xAl2O4:Eux (x = 0.00, 0.01, 0.03, 0.05, 0.07, and 0.09) phosphor were synthesized by urea fuel combustion method at 580 °C temperature with very high brightness and long after glow. The structural studies carried out using XRD technique shows that the sample is single phased in nature and it gets crystallized into monoclinic phase with standard JCPDS 34-0379 card. The oxide formation was examined using FTIR technique. UV–Visible spectroscopy has been used to study the optical band gap of material, it’s value in the current case, Sr1−xAl2O4:Eux (x = 0.05) is 3.78 eV. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM), confirm the formation of nano particle, with average particle size around 6–25 nm. The elemental composition was confirmed by using Energy Dispersive X-ray (EDX) technique. The photo-luminescence study revealed that it gives broad emission spectra using excitation wavelength λex = 365 nm. It is observed that the Sr1−xAl2O4:Eux (x = 0.05) phosphor give maximum emission intensity and it can be regulated as green (0.23, 0.49) emission with the colour temperature 3224 K, CRI 78, and colour purity 60.69%. The spectra are intense and lie in the visible range. The green lights can regulate the circadian rhythm through melatonin, and it is also suitable for green LED and other optoelectronic devices. The Sr1−xAl2O4:Eux (x = 0.00 and 0.05) phosphor behaves like eco-materials, because nano particles of Sr1−xAl2O4:Eux (x = 0.05) does not show antimicrobial activity.

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Section: Photoluminescence (Pl) Analysismentioning

confidence: 76%

Section: Photoluminescence (Pl) Analysismentioning

confidence: 99%