Transient Photocurrent Responses of Sr1-xCexTiO3 Perovskites Under Visible Light Illumination for Photovoltaic Applications S. Vinod Kumar, D. Prakash Babu, S. Ponkumar, R. Uthrakumar, K. Kaviyarasu, et al. Luminescence, 2024 The objective of this study was to synthesize strontium titanate (Sr1‐xCexTiO3) doped with Ce3+ by solid state method. Its crystalline structure is Sr1‐xCexTiO3, and its bandgap ranges from ~3.3 to ~2.7 eV. In the photoluminescence of samples excited at 288 nm, the maximum emission of blue light was observed at 380 and 390 nm. Photocatalytic results show that dye molecules have a high absorbance, whereas their surface area is large. According to a line sweep voltammetric plot (LSV), illumination increases the current density by 0.4 μA cm−2 compared with dark conditions. It was demonstrated that the material changed from n‐type to p‐type under doping. Chronoamperometry spectra were obtained for sample Sr1‐xCexTiO3 (x = 0, 0.005, 0.01, 0.03, 0.05) when an electrical voltage of 0.8 V was applied versus NHE. The plots indicate an increase in the current density under “light ON” conditions and a decrease under “light OFF” conditions. As Ce3+ concentration increases, the photocurrent increases until about 3 mol%, after which it decreases abruptly.
Samarium ion-doped calcium silicate: A promising material for fabrication of light emitting diodes R. Dhanu, M. Madesh Kumar, D. Prakashbabu, J. Gurusiddappa, Y. T. Ravikiran, et al. International Journal of Modern Physics B, 2024 In this work, calcium silicate nanophosphors (CaSiO3) doped with Sm[Formula: see text] ions were prepared at [Formula: see text]C by a simple solution combustion synthesis technique. The particle size, functional groups and morphology of the prepared phosphors were identified by X-Ray diffraction (XRD), Fourier transform infrared (FTIR), Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) techniques. The monoclinic phase of the nanophosphors was confirmed by X-ray diffraction studies. The effective excitation of the nanophosphors near the UV region and their yellow emission were confirmed by photoluminescence studies.
A novel Sr0.99Zr(PO4)2:0.01Eu3+ ceramic glass viable for long term energy storage applications Natarajan Thiruveni, Muthammal Ramu, Dhanapal Prakash Babu, Sadasivam Ponkumar, Ramasamy Jayavell Materials Protection, 2024 This paper reports the first-time synthesis of Sr0.99Zr(PO4)2:0.01Eu3+ ceramic glass were synthesized via solution combustion using glycine as fuel (1:1 fuel-to-oxidizer ratio). X-ray diffraction confirmed the desired crystalline phase, while Scherrer analysis indicated an average particle size of approximately 60 nm. This was further supported by scanning electron microscopy, which revealed a particle size around 75 nm. Notably, the material exhibited a characteristic mesoporous structure, a signature feature of the solution combustion technique. Dielectric studies revealed a double exponential decay profile, signifying the presence of voids within the material. Importantly, the significantly smaller time constant (t2) compared to t1 highlights the material's suitability for long-term energy storage applications.
A comprehensive analysis of quasifission lifetimes in the superheavy element region 104≤ Z≤ 120 V GS, PB D, S N, M HC, PS Damodara Gupta Chinese Physics C , 2025 2025 Citations: 2
Solid-state synthesis and characterization of novel MnZr(PO 4 ) 2 materials for γ-ray dosimetry D PrakashBabu, S Ponkumar, APG Prakash, R Uthrakumar, K Kaviyarasu, ... Journal of Radioanalytical and Nuclear Chemistry 334 (6), 4087-4096 , 2025 2025 Citations: 1
Competition between Coulomb fission, fission and capture cross sections for 54Fe+ 245Pu reaction GS Vasudha, D Prakash Babu, N Sowmya, HC Manjunatha 2024
Transient Photocurrent Responses of Sr 1‐x Ce x TiO 3 Perovskites Under Visible Light Illumination for Photovoltaic Applications SV Kumar, DP Babu, S Ponkumar, R Uthrakumar, K Kaviyarasu, ... Luminescence 39 (11), e4918 , 2024 2024 Citations: 1
A Novel SrZr(PO 4 ) 2 :Dy 2 O 3 Solid Solution for Photoluminescence and Super Capacitor Applications N Thiruveni, R Mathammal, S Ponkumar, D PrakashBabu, R Jayavel Brazilian Journal of Physics 54 (4), 95 , 2024 2024
Samarium ion-doped calcium silicate: A promising material for fabrication of light emitting diodes R Dhanu, MM Kumar, D Prakashbabu, J Gurusiddappa, YT Ravikiran, ... International Journal of Modern Physics B 38 (18), 2450237 , 2024 2024 Citations: 1
Defect (Na+) induced PL enhancement in Dy3+ doped ZrO2 S Ponkumar, D Prakashbabu, I Hossain Materials Today: Proceedings , 2024 2024
Synthesis, characterization, and enhanced photoluminescence of ZrO2: Dy3+ phosphors by incorporating Li+, Na+ and K+ ions for LED applications S Ponkumar, D Prakashbabu, K Parasuraman, R Uthrakumar, ... Ceramics International 50 (8), 13219-13228 , 2024 2024 Citations: 23
Sr0. 99Zr (PO4) 2: 0.01 Eu3+ ceramic glass for photoluminescence applications N Thiruvenia, R Mathammalb Journal of Ovonic Research 20 (2), 155-161 , 2024 2024
Sr0.99Zr(PO4)2:0.01Eu3+ ceramic glass for photoluminescence applications N Thiruveni, R Mathammal, D PrakashBabu Journal of Ovonic research 20 (2), 155-161 , 2024 2024
Coulomb Fission and Coulomb Time Scales of Superheavy Nuclei Z= 120 GS Vasudha, D Prakashbabu, N Sowmya, HC Manjunatha Brazilian Journal of Physics 54 (1), 29 , 2024 2024 Citations: 1
A Novel Sr0.99Zr(PO4)2:0.01Eu3+ Ceramic Glass viable for Long Term Energy Storage Applications N Thiruveni, R Mathammal, D PrakashBabu, S Ponkumar, R Jayavel Materials Protection/Zastita Materijala. 65 (1) , 2024 2024
AlxSr1-xTiO3 perovskites with enhanced hydroxyl radicals and anions are highly reactive and break down organic dye molecules forming nontoxic by-products like H2O and CO2 SV Kumar, D PrakashBabu, S Ponkumar, SN Kumar, SM Shanbogh, ... Surfaces and Interfaces 44, 103739 , 2024 2024 Citations: 11
Competition of coulomb fission and fusion fission for 48Ca+ 252Cf reaction GS Vasudha, D Prakashbabu, N Sowmya, HC Manjunatha Proceedings of the DAE-BRNS symposium on nuclear physics. V. 67, 2-2 , 2023 2023
Ohmic conduction in poly (o-toluidine)–nano CuO composite based devices S Ponkumar, D PrakashBabu, P Anjaneyulu, R Uthrakumar, K Kaviyarasu Kuwait Journal of Science 50 (4), 580-583 , 2023 2023 Citations: 5
Gamma-ray mean lifetimes of transitions state for even–even nuclei in the range 58 100 GS Vasudha, N Sowmya, HC Manjunatha, D PrakashBabu International Journal of Modern Physics E 32 (08), 2350040 , 2023 2023
W4-OP1. Photocatalytic degradation activity of SrTiO3 against Methylene Blue Dye SV Kumar, D PrakashBabu 5th International Conference on Nanomaterials Science and Mechanical … , 2022 2022
Third-order nonlinear optical characteristics of Er 3+ -doped BaMoO 4 nanostructures RA Sharath, KM Rahulan, NAL Flower, RA Sujatha, G Vinitha, LR Rajeev, ... Journal of Materials Science: Materials in Electronics 33 (11), 8542-8550 , 2022 2022 Citations: 10
Tuning the non-linear optical absorption properties of Eu3+-doped NiWO4 nanostructures PC Karthika, RA Sharath, N Angeline Little Flower, K Mani Rahulan, ... Journal of Materials Science: Materials in Electronics 33 (11), 8308-8317 , 2022 2022 Citations: 9
Sonication-supported synthesis of cobalt oxide assembled on an N-MWCNT composite for electrochemical supercapacitors via three-electrode configuration RK Nare, S Ramesh, PK Basavi, V Kakani, C Bathula, HM Yadav, ... Nature: Scientific Reports 12 (1), 1998 , 2022 2022 Citations: 47
MOST CITED SCHOLAR PUBLICATIONS
Low temperature synthesis of pure cubic ZrO2 nanopowder: Structural and luminescence studies D Prakashbabu, RH Krishna, BM Nagabhushana, H Nagabhushana, ... Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 122, 216-222 , 2014 2014 Citations: 85
Charge compensation assisted enhancement of photoluminescence in combustion derived Li+ co-doped cubic ZrO 2: Eu 3+ nanophosphors D Prakashbabu, HB Ramalingam, RH Krishna, BM Nagabhushana, ... Physical Chemistry Chemical Physics 18 (42), 29447-29457 , 2016 2016 Citations: 70
X-ray photoelectron spectroscopy and optical analysis of pure white light emitting Dy3+ and Mn2+ codoped Na3Y (PO4) 2 phosphors for solid-state lighting K Munirathnam, PC Nagajyothi, D Prakashbabu, BDP Raju, J Shim Ceramics International 45 (1), 686-694 , 2019 2019 Citations: 55
Sonication-supported synthesis of cobalt oxide assembled on an N-MWCNT composite for electrochemical supercapacitors via three-electrode configuration RK Nare, S Ramesh, PK Basavi, V Kakani, C Bathula, HM Yadav, ... Nature: Scientific Reports 12 (1), 1998 , 2022 2022 Citations: 47
Synthesis and electrical properties of polyaniline–cerium oxide composites IS Ashwini, J Pattar, P Anjaneyulu, D PrakashBabu, R Sreekanth, ... Synthetic Metals 270, 116588 , 2020 2020 Citations: 44
A potential white light emitting cubic ZrO2: Dy3+, Li+ nano phosphors for solid state lighting applications D Prakashbabu, HB Ramalingam, RH Krishna, BM Nagabhushana, ... Journal of Luminescence 192, 496-503 , 2017 2017 Citations: 35
Synthesis, photoluminescence and Judd–Ofelt parameters of LiNa 3 P 2 O 7 :Eu 3+ orthorhombic microstructures K Munirathnam, GR Dillip, BDP Raju, SW Joo, SJ Dhoble, ... Applied Physics A 120 (4), 1615-1623 , 2015 2015 Citations: 24
Synthesis, characterization, and enhanced photoluminescence of ZrO2: Dy3+ phosphors by incorporating Li+, Na+ and K+ ions for LED applications S Ponkumar, D Prakashbabu, K Parasuraman, R Uthrakumar, ... Ceramics International 50 (8), 13219-13228 , 2024 2024 Citations: 23
Flux influenced morphology tailoring and emission color tuning to pure white in ZrO2: Eu3+ phosphors S Ponkumar, K Janaki, D PrakashBabu, MM Kumar, MM Reddy Journal of Luminescence 201, 345-349 , 2018 2018 Citations: 19
ZrO 2 :Sm 3+ nanophosphor: synthesis, Rietveld refinement, optical and thermoluminescent properties S Ponkumar, K Janaki, D Prakashbabu, HB Ramalingam, K Munirathnam, ... Applied Physics A 124 (2), 134 , 2018 2018 Citations: 16
Investigation of luminescence spectroscopic characteristics in Eu3+-doped Zn2SiO4 by Judd–Ofelt parameters KN Prathibha, RH Krishna, BV Nagesh, D Prakashbabu, BS Panigrahi, ... Journal of Materials Science: Materials in Electronics , 2021 2021 Citations: 13
Photoluminescence of mixed phase CaSiO3: Ce3+ nanophosphors R Dhanu, D Prakashbabu, P Bindu, MM Kumar, S Ponkumar, RH Krishna, ... Optik 218, 165139 , 2020 2020 Citations: 12
AlxSr1-xTiO3 perovskites with enhanced hydroxyl radicals and anions are highly reactive and break down organic dye molecules forming nontoxic by-products like H2O and CO2 SV Kumar, D PrakashBabu, S Ponkumar, SN Kumar, SM Shanbogh, ... Surfaces and Interfaces 44, 103739 , 2024 2024 Citations: 11
Third-order nonlinear optical characteristics of Er 3+ -doped BaMoO 4 nanostructures RA Sharath, KM Rahulan, NAL Flower, RA Sujatha, G Vinitha, LR Rajeev, ... Journal of Materials Science: Materials in Electronics 33 (11), 8542-8550 , 2022 2022 Citations: 10
Tuning the non-linear optical absorption properties of Eu3+-doped NiWO4 nanostructures PC Karthika, RA Sharath, N Angeline Little Flower, K Mani Rahulan, ... Journal of Materials Science: Materials in Electronics 33 (11), 8308-8317 , 2022 2022 Citations: 9
Nature-inspired synthesis of ZrO2:Dy3+ viable for WLED applications D Prakashbabu Applied Physics A 125 (52) , 2019 2019 Citations: 8
ZrO 2 -Al 2 O 3 nanocomposite: Synthesis, characterization and influence of electron beam irradiation on the structural and PL properties S Ponkumar, K Janaki, D Prakash Babu, K Munirathnam, MM Kumar AIP Conference Proceedings 1966 (1), 020009 , 2018 2018 Citations: 7
Orange photoluminescence emission of samarium ion doped in calcium zirconium orthophosphate YH Mohan Prakash, D Prakash Babu, M Madesh Kumar, S Ponkumar, ... Spectroscopy Letters 54 (4), 292-298 , 2021 2021 Citations: 6
Influence of Precursors on Photoluminescence of Hydrothermally Derived ZrO2 D Prakashbabu, RH Krishna, BM Nagabhushana, H Nagabhushana, ... J. Chem. Eng. Res 2, 105-111 , 2014 2014 Citations: 6
Ohmic conduction in poly (o-toluidine)–nano CuO composite based devices S Ponkumar, D PrakashBabu, P Anjaneyulu, R Uthrakumar, K Kaviyarasu Kuwait Journal of Science 50 (4), 580-583 , 2023 2023 Citations: 5
