Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The divalent (Ca)-doped Eu:YO@SiO core-shell luminescent nanophosphors have been synthesised by a cost-effective combustion technique. Various characterizations were carried out to confirm the successful formation of the core-shell structure. The TEM micrograph reveals the thickness of the SiO coating over Ca-Eu:YO as ∼25 nm. The optimal value of silica coating over the phosphor has been obtained as 10 vol%(TEOS) of SiO, with this value increasing fluorescence intensity by 34 %. Phosphor exhibits CIE coordinates as x = 0.425, y = 0.569 and a CCT value as ∼2115 K with color purity and the respective CRI of 80 % and 98 %, respectively, which make the core-shell nanophosphor suitable for warm LEDs, and other optoelectronic applications. Further, the core-shell nanophosphor has been investigated for the visualisation of latent finger prints and as security ink. The findings point towards the prospective future application of nanophosphor materials for anti-counterfeiting purposes and latent finger prints for forensic purposes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.saa.2023.122782 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Eco-Friendly Electrophoretic Deposition of Fluorescent Nanocomposite Films in an Aqueous Dispersion of Hydrophilized Core/Shell CuInS/ZnS Quantum Dots for Optoelectronic Applications.
ACS Appl Mater Interfaces
February 2024
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
Low-toxic and efficient fluorescent core-shell CuInS/ZnS (CIS/ZnS) quantum dots (QDs) are good candidates for optoelectronic device applications. They are synthesized in a hydrophobic environment, while large amounts of organic solvents used in the preparation of fluorescent films have significant problems on environmental load and human health. CIS/ZnS QDs hydrophilized by adsorbing 3-mercaptopropionic acid on their surfaces can be used in the aqueous film fabrication process.
View Article and Find Full Text PDFA Eudoped functional core-shell nanophosphor as fluorescent biosensor for highly selective and sensitive detection of dsDNA.
J Photochem Photobiol B
December 2023
Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India. Electronic address:
Lanthanide-doped core-shell nanomaterials have illustrated budding potential as luminescent materials, but their biological applications have still been very limited due to their aqueous solubility and biocompatibility. Here, we report a simple and cost-effective approach to construct a water-stable chitosan-functionalized lanthanoid-based core shell (Ca-Eu:YO@SiO) nanophosphor. The as-synthesized Ca-Eu:YO@SiO-chitosan (CEY@SiO-CH) nanophosphor has been characterized for its structural, morphological, and optical properties, by employing different analytical tools.
View Article and Find Full Text PDFEnhance photoluminescence properties of Ca-Eu:YO@SiO core-shell nanomaterial for the advanced forensic and LEDs applications.
Spectrochim Acta A Mol Biomol Spectrosc
October 2023
Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India. Electronic address:
The divalent (Ca)-doped Eu:YO@SiO core-shell luminescent nanophosphors have been synthesised by a cost-effective combustion technique. Various characterizations were carried out to confirm the successful formation of the core-shell structure. The TEM micrograph reveals the thickness of the SiO coating over Ca-Eu:YO as ∼25 nm.
View Article and Find Full Text PDFIntense Near-Infrared Light-Emitting NaYF:Nd,Yb-Based Nanophosphors for Luminescent Solar Concentrators.
Materials (Basel)
April 2023
Materials Architecturing Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea.
In this study, we synthesized NaYF-based downshifting nanophosphors (DSNPs), and fabricated DSNP-polydimethylsiloxane (PDMS) composites. Nd ions were doped into the core and shell to increase absorbance at 800 nm. Yb ions were co-doped into the core to achieve intense near-infrared (NIR) luminescence.
View Article and Find Full Text PDFUnderstanding and Preventing Photoluminescence Quenching to Achieve Unity Photoluminescence Quantum Yield in Yb:YLF Nanocrystals.
ACS Appl Mater Interfaces
January 2023
Optoelectronic Materials Section, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands.
Ytterbium-doped LiYF (Yb:YLF) is a commonly used material for laser applications, as a photon upconversion medium, and for optical refrigeration. As nanocrystals (NCs), the material is also of interest for biological and physical applications. Unfortunately, as with most phosphors, with the reduction in size comes a large reduction of the photoluminescence quantum yield (PLQY), which is typically associated with an increase in surface-related PL quenching.
View Article and Find Full Text PDF