1
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Kaur S, Kaur H, Rao AS. UV and blue excited tunable emission of thermally stable Bi 3+ sensitized Eu 3+ doped calcium aluminozincate phosphor for photonic applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 305:123524. [PMID: 37866259 DOI: 10.1016/j.saa.2023.123524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 10/07/2023] [Accepted: 10/11/2023] [Indexed: 10/24/2023]
Abstract
Bi3+/Eu3+ co-driven calcium aluminozincate (CAZ) phosphor prepared by sol-gel route. Structural analysis was conducted based on X-ray diffractogram. Scanning Electron Microscope images were recorded using Carl Zeiss microscope. Luminescent traits of the said phosphors were identified using excitation and emission spectroscopy at room temperature and elevated temperature. The emission spectra recorded at room temperature under different excitations exhibit variation in spectral behavior. The Commision Internationale de-lElcairage coordinates shown in chromaticity diagram indicate the change in emission hue as pure blue, bluish red and finally pure red by varying the excitation wavelengths. The temperature dependent emission spectra show decrease in emission intensity with temperature and activation energy found to be 0.280 eV. The decay curves were also recorded to determine lifetime and study energy transfer between Bi3+ and Eu3+ ions. Auzel's fit conducted based on the decay lifetimes helps in evaluating quantum efficiency theoretically. All these investigations authorize the potential of Bi3+/Eu3+ doped CAZ phosphors for their utilization as color-tunable phosphor in photonic applications.
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Affiliation(s)
- Sumandeep Kaur
- Department of Applied Physics, Delhi Technological University, Bawana Road, New Delhi 110 042, India
| | - Harpreet Kaur
- Department of Applied Physics, Delhi Technological University, Bawana Road, New Delhi 110 042, India; Department of Applied Science and Humanities, Delhi Technical Campus, Greater Noida-201 306, Uttar Pradesh 201306, India
| | - A S Rao
- Department of Applied Physics, Delhi Technological University, Bawana Road, New Delhi 110 042, India.
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2
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Yashodha S, Dhananjaya N, Yogananda H, Vinutha K, Ravikumar C. Preparation and characterization of multifunctional Li+ co-doped LaOCl: Eu3+ for sensor, phosphor and catalytic applications. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109402] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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3
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King A, Singh R, Nayak BB. Phase and photoluminescence analysis of dual-color emissive Eu3+-doped ZrO2 nanoparticles for advanced security features in anti-counterfeiting. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127715] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Wiatrak B, Sobierajska P, Szandruk-Bender M, Jawien P, Janeczek M, Dobrzynski M, Pistor P, Szelag A, Wiglusz RJ. Nanohydroxyapatite as a Biomaterial for Peripheral Nerve Regeneration after Mechanical Damage-In Vitro Study. Int J Mol Sci 2021; 22:ijms22094454. [PMID: 33923239 PMCID: PMC8123185 DOI: 10.3390/ijms22094454] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/14/2021] [Accepted: 04/19/2021] [Indexed: 12/23/2022] Open
Abstract
Hydroxyapatite has been used in medicine for many years as a biomaterial or a cover for other biomaterials in orthopedics and dentistry. This study characterized the physicochemical properties (structure, particle size and morphology, surface properties) of Li+- and Li+/Eu3+-doped nanohydroxyapatite obtained using the wet chemistry method. The potential regenerative properties against neurite damage in cultures of neuron-like cells (SH-SY5Y and PC12 after differentiation) were also studied. The effect of nanohydroxyapatite (nHAp) on the induction of repair processes in cell cultures was assessed in tests of metabolic activity, the level of free oxygen radicals and nitric oxide, and the average length of neurites. The study showed that nanohydroxyapatite influences the increase in mitochondrial activity, which is correlated with the increase in the length of neurites. It has been shown that the doping of nanohydroxyapatite with Eu3+ ions enhances the antioxidant properties of the tested nanohydroxyapatite. These basic studies indicate its potential application in the treatment of neurite damage. These studies should be continued in primary neuronal cultures and then with in vivo models.
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Affiliation(s)
- Benita Wiatrak
- Department of Pharmacology, Wroclaw Medical University, Mikulicza-Radeckiego 2, 50-345 Wrocław, Poland; (B.W.); (M.S.-B.); (P.J.); (A.S.)
| | - Paulina Sobierajska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland
- Correspondence: (P.S.); (R.J.W.); Tel.: +48-(071)-3954-274 (P.S.); +48-(071)-3954-159 (R.J.W.)
| | - Marta Szandruk-Bender
- Department of Pharmacology, Wroclaw Medical University, Mikulicza-Radeckiego 2, 50-345 Wrocław, Poland; (B.W.); (M.S.-B.); (P.J.); (A.S.)
| | - Paulina Jawien
- Department of Pharmacology, Wroclaw Medical University, Mikulicza-Radeckiego 2, 50-345 Wrocław, Poland; (B.W.); (M.S.-B.); (P.J.); (A.S.)
| | - Maciej Janeczek
- Department of Biostructure and Animal Physiology, Wrocław University of Environmental and Life Sciences, Norwida 25/27, 50-375 Wrocław, Poland; (M.J.); (P.P.)
| | - Maciej Dobrzynski
- Department of Pediatric Dentistry and Preclinical Dentistry, Wroclaw Medical University, Krakowska 26, 50-425 Wroclaw, Poland;
| | - Patrycja Pistor
- Department of Biostructure and Animal Physiology, Wrocław University of Environmental and Life Sciences, Norwida 25/27, 50-375 Wrocław, Poland; (M.J.); (P.P.)
| | - Adam Szelag
- Department of Pharmacology, Wroclaw Medical University, Mikulicza-Radeckiego 2, 50-345 Wrocław, Poland; (B.W.); (M.S.-B.); (P.J.); (A.S.)
| | - Rafal J. Wiglusz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland
- Correspondence: (P.S.); (R.J.W.); Tel.: +48-(071)-3954-274 (P.S.); +48-(071)-3954-159 (R.J.W.)
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5
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Wang H, Wang Y, Zhao Q, Zhou X, Zou H, Song Y, Sheng Y. The preparation, structure and luminescent properties of Mg–CaCO 3:Eu 3+ phosphors. CrystEngComm 2021. [DOI: 10.1039/d0ce01737j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Morphology and luminescence properties of Mg–CaCO3:Eu3+ phosphors are found to change with the initial magnesium ion concentration.
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Affiliation(s)
- Hongyang Wang
- College of Chemistry
- Jilin University
- Changchun 130012
- PR China
| | - Yulu Wang
- College of Chemistry
- Jilin University
- Changchun 130012
- PR China
| | - Qianran Zhao
- College of Chemistry
- Jilin University
- Changchun 130012
- PR China
| | - Xiuqing Zhou
- College of Chemistry
- Jilin University
- Changchun 130012
- PR China
| | - Haifeng Zou
- College of Chemistry
- Jilin University
- Changchun 130012
- PR China
| | - Yanhua Song
- College of Chemistry
- Jilin University
- Changchun 130012
- PR China
| | - Ye Sheng
- College of Chemistry
- Jilin University
- Changchun 130012
- PR China
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6
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Kim D, Kim HE, Kim CH. Enhancement of Long-Persistent Phosphorescence by Solid-State Reaction and Mixing of Spectrally Different Phosphors. ACS OMEGA 2020; 5:10909-10918. [PMID: 32455211 PMCID: PMC7241031 DOI: 10.1021/acsomega.0c00620] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 04/24/2020] [Indexed: 05/31/2023]
Abstract
Rare-earth-doped oxide-based phosphors have attracted great interest as light-emitting materials for technical applications and fundamental research because of their high brightness, tunable emission wavelength, and low toxicity, as well as chemical and thermal stability. The recent development of rare-earth-doped nanostructured materials showed improved phosphorescence characteristics, including afterglow and lifetime. However, the development of highly efficient phosphors remains challenging in terms of brightness and long persistence. Herein, novel protocols were developed for improving phosphorescence characteristics based on the energy transfer effect by chemical mixing of spectrally different phosphors. This protocol is based on the simple mixing method of different phosphors, which is totally different from the conventional methods but provides much brighter persistent phosphorescence. Simple chemical mixing methods significantly improved the afterglow intensity and lifetime of green and blue phosphors regardless of mixed time when subjected to a high-temperature solid-state reaction. In particular, chemical mixing after a high-temperature solid-state reaction enhanced the phosphorescence intensity more effectively than did chemical mixing before the reaction. We achieved increased luminescence of the phosphor, which is 10 times greater than that of the control sample, from all of the chemical mixing methods, which resulted in more efficient energy transfer than previously reported studies. Chemical mixing of three spectrally different phosphors was also performed to achieve multistep energy transfer for the first time, exhibiting a much higher afterglow intensity (∼2 times) than that of single-step energy transfer. This study provides a novel and simple method for the production of bright and long-persistent phosphors and thus expands their application range.
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Affiliation(s)
- Doory Kim
- Department
of Chemistry, Hanyang University, Seoul 04763, South Korea
- Research
Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, South Korea
- Institute
of Nano Science and Technology, Hanyang
University, Seoul 04763, South Korea
| | - Han-Eol Kim
- Gwangju
Institute of Science and Technology, Gwangju 61005, South Korea
| | - Chang-Hong Kim
- Korea
Institute of Science and Technology, Seoul 02792, South
Korea
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7
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Yadav R, Monika, Rai S, Dhoble S. Recent advances on morphological changes in chemically engineered rare earth doped phosphor materials. PROG SOLID STATE CH 2020. [DOI: 10.1016/j.progsolidstchem.2019.100267] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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8
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Mao Y, Wang Z, Ye R, Jiang L, Hu S, Yang J. The morphology evolution, tunable down-conversion luminescence, and energy transfer of [CaY]F 2 crystals doped with Li +/Ce 3+/Tb 3. Dalton Trans 2020; 49:15433-15442. [PMID: 33140784 DOI: 10.1039/d0dt02955f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Octahedral [CaY]F2 crystals with an average particle size of 1 μm were synthesized via a mild one-step hydrothermal route without employing any surfactants. Various morphologies, including cubes, truncated cubes, truncated octahedrons, and spheres, were achieved via manipulating the amount of EDTA used, and a possible growth mechanism was proposed based on the surface energies of different crystal planes and the influence of the surfactant. XRD, SEM, EDS, TEM, HRTEM, and PL analysis were used to characterize the products. The effects of the morphologies and Li+ doping concentrations on the luminescence intensities of the [CaY]F2:Ce3+/Tb3+ phosphors were explored, and the strongest luminescence intensity is obtained when the sample is cubic with (100) crystal faces and the doping concentration of Li+ is 0.25 mol%. Additionally, multicolor emission (blue → aquamarine blue → green) was obtained from [CaY]F2:Ce3+/Tb3+ phosphors via adjusting the doping concentration of Tb3+, which resulted from the Ce3+ → Tb3+ energy transfer behavior; the energy transfer here happened through a dipole-dipole mechanism. This work may result in the as-synthesized phosphors having great application potential in many optoelectronic device fields, such as in displays and multicolor lighting.
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Affiliation(s)
- Yini Mao
- School of Chemistry and Chemical Engineering, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China.
| | - Zhiyi Wang
- School of Chemistry and Chemical Engineering, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China.
| | - Rui Ye
- School of Chemistry and Chemical Engineering, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China.
| | - Li Jiang
- School of Chemistry and Chemical Engineering, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China.
| | - Shanshan Hu
- School of Chemistry and Chemical Engineering, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China.
| | - Jun Yang
- School of Chemistry and Chemical Engineering, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China.
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9
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Gupta SK, Zuniga JP, Abdou M, Ghosh PS, Mao Y. Optical properties of undoped, Eu3+ doped and Li+ co-doped Y2Hf2O7 nanoparticles and polymer nanocomposite films. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01181a] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Li+ co-doping of Y2Hf2O7:Eu3+ nanoparticles improve their quenching concentration, asymmetry ratio, quantum yield, and radioluminescence intensity due to the enhanced covalent character of Eu3+–O2− bonding.
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Affiliation(s)
- Santosh K. Gupta
- Department of Chemistry
- University of Texas Rio Grande Valley
- Edinburg
- USA
- Radiochemistry Division
| | - Jose P. Zuniga
- Department of Chemistry
- University of Texas Rio Grande Valley
- Edinburg
- USA
| | - Maya Abdou
- Department of Chemistry
- University of Texas Rio Grande Valley
- Edinburg
- USA
| | - P. S. Ghosh
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Yuanbing Mao
- Department of Chemistry
- Illinois Institute of Technology
- Chicago
- USA
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10
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Rohini B, Darshan G, Premkumar H, Kavyashree D, Sharma S, Sreenivasa S, Nagabhushana H. Ultrasound induced synthesis of dual phased hierarchical ZrO2:Eu3+ architectures: Fluorescent based sensor for rapid visualization of latent fingerprints. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123749] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Girish KM, Prashantha SC, Naik R, Nagabhushana H, Anantharaju KS. Effect of Bi3+ and Li+ co-doping on the luminescence properties of Zn2TiO4:Eu3+ nanophosphor for display applications. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0948-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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12
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Srigurunathan K, Meenambal R, Guleria A, Kumar D, Ferreira JMDF, Kannan S. Unveiling the Effects of Rare-Earth Substitutions on the Structure, Mechanical, Optical, and Imaging Features of ZrO 2 for Biomedical Applications. ACS Biomater Sci Eng 2019; 5:1725-1743. [PMID: 33405549 DOI: 10.1021/acsbiomaterials.8b01570] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The impact of selective rare-earth (RE) additions in ZrO2-based ceramics on the resultant crystal structure, mechanical, morphological, optical, magnetic, and imaging contrast features for potential applications in biomedicine is explored. Six different RE, namely, Yb3+, Dy3+, Tb3+, Gd3+, Eu3+, and Nd3+ alongside their variations in the dopant concentrations were selected to accomplish a wide range of combinations. The experimental observations affirmed the roles of size and dopant concentration in determining the crystalline phase behavior of ZrO2. The significance of tetragonal ZrO2 (t-ZrO2) → monoclinic ZrO2 degradation is evident with 10 mol % of RE substitution, while RE contents in the range of 20 and 40 mol % ensured either t-ZrO2 or cubic ZrO2 (c-ZrO2) stability until 1500 °C. High RE content in the range of 80-100 mol % still confirmed the structural stability of c-ZrO2 for lower-sized Yb3+, Dy3+, and Tb3+, while the c-ZrO2 → RE2Zr2O7 phase transition becomes evident for higher-sized Gd3+, Eu3+, and Nd3+. A steady decline in the mechanical properties alongside a quenching effect experienced in the emission phenomena is apparent for high RE concentrations in ZrO2. On the one hand, the paramagnetic characteristics of Dy3+, Tb3+, Gd3+, and Nd3+ fetched excellent contrast features from magnetic resonance imaging analysis. On the other hand, Yb3+ and Dy3+ added systems exhibited good X-ray absorption coefficient values determined from computed tomography analysis.
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Affiliation(s)
| | - Rugmani Meenambal
- Centre for Nanoscience and Technology, Pondicherry University, Puducherry 605 014, India.,Department of Clinical Pharmacology and Toxicology, National Institute of Mental Health and Neuro Science, Bangalore 560029, India
| | - Anupam Guleria
- Centre of Biomedical Research, SGPGIMS Campus, Raibareli Road, Lucknow 226014, India
| | - Dinesh Kumar
- Centre of Biomedical Research, SGPGIMS Campus, Raibareli Road, Lucknow 226014, India
| | | | - Sanjeevi Kannan
- Centre for Nanoscience and Technology, Pondicherry University, Puducherry 605 014, India
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13
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Ashwini S, Prashantha S, Naik R, Nagabhushana H. Enhancement of luminescence intensity and spectroscopic analysis of Eu3+ activated and Li+ charge-compensated Bi2O3 nanophosphors for solid-state lighting. J RARE EARTH 2019. [DOI: 10.1016/j.jre.2018.07.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Jain N, Paroha R, Singh RK, Mishra SK, Chaurasiya SK, Singh RA, Singh J. Synthesis and Rational design of Europium and Lithium Doped Sodium Zinc Molybdate with Red Emission for Optical Imaging. Sci Rep 2019; 9:2472. [PMID: 30792438 PMCID: PMC6385369 DOI: 10.1038/s41598-019-38787-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 12/21/2018] [Indexed: 01/05/2023] Open
Abstract
Highly efficient fluorescent and biocompatible europium doped sodium zinc molybdate (NZMOE) nanoprobes were successfully synthesized via Polyol method. Non-radiative defect centres get reduced with Li+ co-doping in NZMOE nanoprobes. XRD spectra and Rietveld refinement confirmed successful incorporation of lithium ion and crystallinity was also improved with Li+ co-doping. The shape of phosphor is rod shaped, as determined by TEM. Significant enhancement in photoluminescence intensity was observed with 266, 395 and 465 nm excitations. Profound red emission was recorded for 5 at% Li+ co-doped NZMOE nanoprobes with 266 nm excitation. It shows high asymmetry ratio (~15), color purity (94.90%) and good quantum efficiency (~70%). Judd Ofelt parameters have been calculated to measure intensity parameters and radiative transition rates. In order to measure biocompatibility of the nanoprobes, cytotoxicity assays were performed with HePG2 cells. The fluorescence emitted from phosphor material treated HePG2 cells was also measured by Laser Scanning Confocal Microscopy. The bright red fluorescence in HePG2 cells treated with very low concentration (20 μg/ml) of phosphor material indicates that it could be a promising phosphor for biological detection or bio-imaging.
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Affiliation(s)
- Neha Jain
- Department of Physics, Dr. Harisingh Gour Central University, Sagar, 470003, India
| | - Ruchi Paroha
- Host-Pathogen Interaction and Signal Transduction Laboratory, Department of Microbiology, Dr. Harisingh Gour Central University, Sagar, 470003, India
| | - Rajan K Singh
- Department of Physics, Dr. Harisingh Gour Central University, Sagar, 470003, India
| | - Siddhartha K Mishra
- Department of Zoology, Dr. Harisingh Gour Central University, Sagar, 470003, India
| | - Shivendra K Chaurasiya
- Host-Pathogen Interaction and Signal Transduction Laboratory, Department of Microbiology, Dr. Harisingh Gour Central University, Sagar, 470003, India
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal, MP, 462003, India
| | - R A Singh
- Department of Physics, Dr. Harisingh Gour Central University, Sagar, 470003, India
| | - Jai Singh
- Department of Physics, Dr. Harisingh Gour Central University, Sagar, 470003, India.
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15
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Jain N, Singh RK, Sinha S, Singh RA, Singh J. Color tunable emission through energy transfer from Yb3+ co-doped SrSnO3: Ho3+ perovskite nano-phosphor. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0778-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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16
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Chatterjee R, Saha S, Sen D, Panigrahi K, Ghorai UK, Das GC, Chattopadhyay KK. Neutralizing the Charge Imbalance Problem in Eu 3+-Activated BaAl 2O 4 Nanophosphors: Theoretical Insights and Experimental Validation Considering K + Codoping. ACS OMEGA 2018; 3:788-800. [PMID: 31457929 PMCID: PMC6641287 DOI: 10.1021/acsomega.7b01525] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 01/04/2018] [Indexed: 05/05/2023]
Abstract
In recent years, rare-earth-doped nanophosphors have attracted great attention in the field of luminescent materials for advanced solid-state lighting and high-resolution display applications. However, the low efficiency of concurrent red phosphors creates a major bottleneck for easy commercialization of these devices. In this work, intense red-light-emitting K+-codoped BaAl2O4:Eu3+ nanophosphors having an average crystallite size of 54 nm were synthesized via a modified sol-gel method. The derived nanophosphors exhibit strong red emission produced by the 5D0 → 7F J (J = 0, 1, 2, 3, 4) transitions of Eu3+ upon UV and low-voltage electron beam excitation. Comparative photoluminescence (PL) analysis is executed for Eu3+-activated and K+-coactivated BaAl2O4:Eu3+ nanophosphors, demonstrating remarkable enhancement in PL intensity as well as thermal stability due to K+ codoping. The origin of this PL enhancement is also analyzed from first-principles calculations using density functional theory. Achievement of charge compensation with the addition of a K+ coactivator plays an important role in increasing the radiative lifetime and color purity of the codoped nanophosphors. Obtained results substantially approve the promising prospects of this nanophosphor in the promptly growing field of solid-state lighting and field emission display devices.
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Affiliation(s)
- Rituparna Chatterjee
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Subhajit Saha
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Dipayan Sen
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Karamjyoti Panigrahi
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Uttam Kumar Ghorai
- Department
of Industrial Chemistry & Swami Vivekananda Research Centre, Ramakrishna Mission Vidyamandira, Belur Math, Howrah 711202, India
| | - Gopes Chandra Das
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Kalyan Kumar Chattopadhyay
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
- E-mail:
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17
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Mukhopadhyay L, Rai VK. Investigation of photoluminescence properties, Judd–Ofelt analysis, luminescence nanothermometry and optical heating behaviour of Er3+/Eu3+/Yb3+:NaZnPO4 nanophosphors. NEW J CHEM 2018. [DOI: 10.1039/c8nj02320d] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The Er3+/Eu3+/Yb3+:NaZnPO4 nanophosphors can be used as temperature sensors and optical nano-heaters with significant sensor sensitivity.
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Affiliation(s)
- Lakshmi Mukhopadhyay
- Laser and Spectroscopy Laboratory
- Department of Applied Physics
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad-826004
- India
| | - Vineet Kumar Rai
- Laser and Spectroscopy Laboratory
- Department of Applied Physics
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad-826004
- India
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18
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Chitra G, Thanu TC. A Novel Nano CuO-Poly(o-toluidine) Hybrid Material: Preparation, Characterization and Photocatalytic Studies. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0608-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Mahalingam V, Thirumalai J. Facile hydrothermal synthesis and pulsed laser deposition of Ca0.5Y1−x(WO4)2:xEu3+ phosphors: investigations on the luminescence, Judd–Ofelt analysis and charge compensation mechanism. NEW J CHEM 2017. [DOI: 10.1039/c6nj02975b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PL emission spectra of Ca0.5Y1−x(WO4)2:xEu3+ for powder and thin film phosphors, and PL spectra of Ca0.5Y1−x(WO4)2:xEu3+ co-doped with alkali metal ions.
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