General Physics and Astronomy, Condensed Matter Physics, Instrumentation
2
Scopus Publications
104
Scholar Citations
5
Scholar h-index
3
Scholar i10-index
Scopus Publications
Structural and Optical Properties of Dy3+ Doped with an Eulytite Type NaBaBi2(PO4)3 Phosphor for White Light Emitting Diodes K. Indumathi, S. Tamilselvan, A. Duke John David, G. Shakil Muhammed, G. Annadurai Asian Journal of Chemistry, 2022 A series of NaBaBi(2-x)(PO4)3:xDy3+ eulytite type phosphors with varying doping concentrations were synthesized using a conventional solid-state reaction. The crystalline nature and phase formation of the phosphor were confirmed by the PXRD technique. FESEM was used to examine the surface morphology. UV-DRS measurements were used to quantify the band gap of the host and Dy3+ ion doped phosphors. The phosphors’ photoluminescence properties were thoroughly investigated. According to the excitation spectra, these phosphors show a strong absorption band in the near-ultraviolet (NUV) region, extending from 250 to 450 nm. Under the excitation of 352 nm, the peaks of the emission spectra of Dy3+ ions are located at 485 nm (blue), 575 nm (yellow) and 666 nm (red), corresponding to the magnetic dipole 4F9/2→6H15/2 transition, the electric dipole 4F9/2→6H13/2 transition and the 4F9/2→6H11/2 transition. The optimal concentration of Dy3+ doped phosphor is x = 0.075 and the major concentration quenching mechanism is accomplished by energy transfer between the nearest-neighbour ions. The critical transfer distance (Rc) is estimated to be about 19.01. The Commission International deI’Eclairage (CIE) of NaBaBi1.925(PO4)3:0.075Dy3+ phosphor was calculated to be (x = 0.341 and y = 0.374), which was very close to the “ideal white” (x = 0.33, y = 0.33). Present findings suggest that the phosphor might be a viable option for producing a white-light-emitting phosphor under NUV activation.
Structural and Optical Properties of Dy3+ Doped with an Eulytite Type NaBaBi2(PO4)3 Phosphor for White Light Emitting Diodes ADJD K. indumathi, S. Tamilselvan Asian journal of Chemistry 34 (7), 1869-1874 , 2022 2022.0 Citations: 2
Structural and optical properties of Eu3+ doped Sr3Gd [PO4] 3 phosphor white-LED application K Indumathi, S Tamilselvan, L Rajasekaran, ADJ David, GS Muhammad, ... Materials Letters 309, 131371 , 2022 2022.0 Citations: 30
STRUCTURAL AND OPTICAL PROPERTIES OF PHOSPHOR COMPOUND Ca3La(PO4)3 DOPED RARE EARTH ION Eu3+ FOR SOLID STATE LIGHTING ST 1G. Shakil Muhammad, 1M. Vijayakumar, 2A. Duke John David, 3K. Indumathi International Journal of Science and Humanities 7 (1), 99-112 , 2021 2021.0
Synthesis and optical properties of Eu 3 + ‐substituted glaserite‐type orthovanadates CsK 2 Y[VO 4 ] 2 ADJ David, GS Muhammad, V Sivakumar Luminescence 32 (5), 735-744 , 2017 2017.0 Citations: 10
Structural and optical studies of cadmium sulfide (CdS) thin film by chemical bath deposition (CBD) R Sathishkumar, E Devakirubai, A David, S Tamilselvan, ... Mater. Focus 6, 41-46 , 2017 2017.0 Citations: 9
Influence of biologically active substances from Kombucha (Medusomyces gisevii) on rat gut microbiota with experimental antibiotic-associated dysbiosis NI Bondareva, LD Timchenko, YM Dobrynya, EV Alieva, IV Rzhepakovsky, ... Indian Journal of Animal Sciences 87 (5), 624-629 , 2017 2017.0 Citations: 7
Structural and Photoluminescence properties of Rare Earth doped Luminescent material ST Shakul Muhammed1, G. Shakil Muhammed1*, A. Duke John David12, K. Indumathi3 Bulletin of Trends in Chemical Sciences 2 (4), 1-6 , 2017 2017.0
Structural and Optical properties of Lanthanum Phosphate doped with Trivalent Rare Earth Ion ST J. John David Chelliah1, A. Duke John David11, S. Preethi1, D. Jaikumar1 ... Bulletin of Trends in Chemical Sciences 2 (3), 1-7 , 2017 2017.0
Synthesis and photoluminescence properties of Sm3+ substituted glaserite-type orthovanadates K3Y [VO4] 2 with monoclinic structure ADJ David, GS Muhammad, V Sivakumar Journal of Luminescence 177, 104-110 , 2016 2016.0 Citations: 42
Synthesis, Phase Formation between Solid Solutions and Photoluminescence Studies on Rare Earth Doped-Glaserite Type Orthovanadate Ca9Y (1-x)-yEux [VO4] 7: Lay ADJ David, GS Muhammad, V Sivakumar International Journal of Applied Science and Mathematics 2, 110-116 , 2015 2015.0 Citations: 2
Continuous microwave-driven polyol process for synthesizing ytterbium-doped yttria powder MA Imam, AW Fliflet, KL Siebach, A David, RW Bruce, SB Qadri, CR Feng, ... 2008 Materials Science and Technology 2008 Conference, MS and T'08, 3-14 , 2009 2009.0
PROCESSING AND PROPERTIES OF ADVANCED CERAMICS AND COMPOSITES: CERAMIC TRANSACTIONS MA Imam, AW Fliflet, KL Siebach, A David, RW Bruce, SB Qadri, CR Feng, ... 2009.0
Photoluminescence and structural properties of NaBaBi2[PO4]3 an Eulytite‑type orthophosphate doped with Sm3+ as new orange‑red emitting phosphors T Indumathi Journal of Material Science 35 (175) , 0 Citations: 2
Synthesis and luminescence properties of Eu3+-substituted CsK2La (VO4) 2 a Glaserite-type orthovanadates ADJ David, GS Muhammad, V Sivakumar
STRUCTURAL AND OPTICAL PROPERTIES OF A GLASERITE TYPE ORTHOVANADATE CsK2LA [VO4] 2 DOPED WITH THE TRIVALENT RARE EARTH ION Sm 3 GS Muhammad, MA Najmunnisa, ADJ David, K Indumathi, S Tamilselvan SCIENCE AND HUMANITIES, 149 , 0
MOST CITED SCHOLAR PUBLICATIONS
Synthesis and photoluminescence properties of Sm3+ substituted glaserite-type orthovanadates K3Y [VO4] 2 with monoclinic structure ADJ David, GS Muhammad, V Sivakumar Journal of Luminescence 177, 104-110 , 2016 2016.0 Citations: 42
Structural and optical properties of Eu3+ doped Sr3Gd [PO4] 3 phosphor white-LED application K Indumathi, S Tamilselvan, L Rajasekaran, ADJ David, GS Muhammad, ... Materials Letters 309, 131371 , 2022 2022.0 Citations: 30
Synthesis and optical properties of Eu 3 + ‐substituted glaserite‐type orthovanadates CsK 2 Y[VO 4 ] 2 ADJ David, GS Muhammad, V Sivakumar Luminescence 32 (5), 735-744 , 2017 2017.0 Citations: 10
Structural and optical studies of cadmium sulfide (CdS) thin film by chemical bath deposition (CBD) R Sathishkumar, E Devakirubai, A David, S Tamilselvan, ... Mater. Focus 6, 41-46 , 2017 2017.0 Citations: 9
Influence of biologically active substances from Kombucha (Medusomyces gisevii) on rat gut microbiota with experimental antibiotic-associated dysbiosis NI Bondareva, LD Timchenko, YM Dobrynya, EV Alieva, IV Rzhepakovsky, ... Indian Journal of Animal Sciences 87 (5), 624-629 , 2017 2017.0 Citations: 7
Structural and Optical Properties of Dy3+ Doped with an Eulytite Type NaBaBi2(PO4)3 Phosphor for White Light Emitting Diodes ADJD K. indumathi, S. Tamilselvan Asian journal of Chemistry 34 (7), 1869-1874 , 2022 2022.0 Citations: 2
Synthesis, Phase Formation between Solid Solutions and Photoluminescence Studies on Rare Earth Doped-Glaserite Type Orthovanadate Ca9Y (1-x)-yEux [VO4] 7: Lay ADJ David, GS Muhammad, V Sivakumar International Journal of Applied Science and Mathematics 2, 110-116 , 2015 2015.0 Citations: 2
Photoluminescence and structural properties of NaBaBi2[PO4]3 an Eulytite‑type orthophosphate doped with Sm3+ as new orange‑red emitting phosphors T Indumathi Journal of Material Science 35 (175) , 0 Citations: 2
STRUCTURAL AND OPTICAL PROPERTIES OF PHOSPHOR COMPOUND Ca3La(PO4)3 DOPED RARE EARTH ION Eu3+ FOR SOLID STATE LIGHTING ST 1G. Shakil Muhammad, 1M. Vijayakumar, 2A. Duke John David, 3K. Indumathi International Journal of Science and Humanities 7 (1), 99-112 , 2021 2021.0
Structural and Photoluminescence properties of Rare Earth doped Luminescent material ST Shakul Muhammed1, G. Shakil Muhammed1*, A. Duke John David12, K. Indumathi3 Bulletin of Trends in Chemical Sciences 2 (4), 1-6 , 2017 2017.0
Structural and Optical properties of Lanthanum Phosphate doped with Trivalent Rare Earth Ion ST J. John David Chelliah1, A. Duke John David11, S. Preethi1, D. Jaikumar1 ... Bulletin of Trends in Chemical Sciences 2 (3), 1-7 , 2017 2017.0
Continuous microwave-driven polyol process for synthesizing ytterbium-doped yttria powder MA Imam, AW Fliflet, KL Siebach, A David, RW Bruce, SB Qadri, CR Feng, ... 2008 Materials Science and Technology 2008 Conference, MS and T'08, 3-14 , 2009 2009.0
PROCESSING AND PROPERTIES OF ADVANCED CERAMICS AND COMPOSITES: CERAMIC TRANSACTIONS MA Imam, AW Fliflet, KL Siebach, A David, RW Bruce, SB Qadri, CR Feng, ... 2009.0
Synthesis and luminescence properties of Eu3+-substituted CsK2La (VO4) 2 a Glaserite-type orthovanadates ADJ David, GS Muhammad, V Sivakumar
STRUCTURAL AND OPTICAL PROPERTIES OF A GLASERITE TYPE ORTHOVANADATE CsK2LA [VO4] 2 DOPED WITH THE TRIVALENT RARE EARTH ION Sm 3 GS Muhammad, MA Najmunnisa, ADJ David, K Indumathi, S Tamilselvan SCIENCE AND HUMANITIES, 149 , 0
