KAVITHA V

Scopus Publications

A NOVEL HYBRID DEPOSITION APPROACH FOR SILVER SELENIDE THIN FILMS: A VIEW ON STRUCTURAL, MORPHOLOGICAL, OPTICAL, THICKNESS, AND LUMINESCENCE CHARACTERIZATION
N. MANIKANDAN, M. KAVITHA, N. KARTHICK KUMAR, V. KAVITHA, M. MANIKANDAN, M. MEENAKSHI
Surface Review and Letters, 2026
A novel approach that comprises the coprecipitation method, a chemical method, and thermal evaporation method under high vacuum, a physical method, was designed to synthesize silver selenide thin films and coat them on two different substrates, viz, glass and Fluorine-doped Tin Oxide (FTO). The characterizations were performed on the powder and the thin film Ag 2 Se samples. X-Ray Diffractomete (XRD) analysis showed the enhanced structural properties in Ag 2 Se-coated FTO samples from the structural metrics and the well-defined, sharp peaks in its diffraction profile. The morphological analysis showed rod-shaped Ag 2 Se particles and the changes in morphology in thin films. UV–Vis spectroscopy analysis showed the variation in band gap, extinction coefficient, and refractive index of the samples. Luminescence properties of the samples showed an intense peak in the visible region around 500[Formula: see text]nm. The elemental composition was confirmed from Energy Dispersive X-ray Spectroscopy (EDX) data. The thickness of the samples was found to be 319[Formula: see text]nm.
Comprehensive perspectives: fabrication, luminescence, and in-vitro properties of Tm3+-doped SrS
V. Kavitha, M. Prema Rani, D. Sivaganesh
Materials Research Innovations, 2025
In this study, the Tm3+-doped SrS samples were synthesised using the sol–gel method and investigated their luminescence and in-vitro characteristics. The structural analysis confirmed the monoclinic crystalline structure, with evident incorporation of Tm3+ ions into the SrS lattice. Optical band gap energies were determined to be in the range of 3.94–4.05 eV. Photoluminescence (PL) measurements revealed visible red emission (around 640 nm) originating from the1G4 → 3F4 transition of Tm3+ ions within the SrS lattice. In-vitro analysis demonstrated enhanced hemocompatibility resulting from thulium doping. The biocompatibility, combined with visible emission characteristics, indicates promising applications in bioimaging. This research sheds light on the synthesis and characterisation of Tm3+-doped SrS samples, highlighting their potential for bioimaging and other related fields.
Delving into the Structural, Optical, and Morphological Properties of AgBr Nanoparticles Synthesized by Chemical Precipitation
N Manikandan, M Kavitha, V Kavitha, N Karthick Kumar, M Manikandan
Journal of Physics Conference Series, 2025
Silver Bromide (AgBr) nanoparticles are made utilizing the chemical precipitation technique. Structural metrics of samples like crystallite size, dislocation density, and lattice strain were determined from the diffraction data. The band gap was determined as 4.65 eV based on the Tauc plot constructed using absorption data. Emission and excitation spectra showed the luminescence behavior of the sample in the green band of the visible region. The colorimetric properties of the sample were also analyzed. Morphological analysis confirmed that AgBr particles were rod-shaped. TEM analysis confirmed the nanocrystalline nature of the samples. EDAX analysis confirms the elements present in the sample. This study emphasizes that the synthesized nanoparticles would be a promising photochromic material.
Assessing the Morphological, Optical, and Structural Characteristics of Barium Zirconate Synthesized via Precipitation Technique
N. Karthick Kumar, M. Kavitha, V. Kavitha, G. Veera Kumar, Y. Saiprasath, J. Kowsalya Devi
Journal of Physics Conference Series, 2025
The precipitation technique was adopted to obtain the barium zirconate powder sample. The samples undergo further heating to 180°C and 220°C for annealing. The annealed and non-annealed samples were compared to investigate how annealing affects the samples. XRD was performed on the samples for structure analysis. The sample displayed a cubic structure, and the structural metrics derived from the XRD data indicated that annealing improved the crystallinity of the samples. UV-Vis spectroscopy was adopted to measure the sample’s band gap energy (Eg). The Tauc plot from the UV absorption data revealed an average direct Eg of 3.96 eV. Luminescence analysis shows intense luminescence in the green band of the visible zone. The CIE diagram constructed using PL data showed a shift in the chromaticity coordinates of the samples on the annealing temperature. Elements such as Ba, Zr, and O were present in the EDX spectra confirming the formation of Barium Zirconate without impurity. Surface Morphology was analyzed from SEM. SEM micrograph showed that the sample has a rod shape and the morphology changes on annealing were observed. The samples with good structural, optical, morphological, and luminescence characteristics would be used to fabricate good optoelectronic devices.
Synergistic tuning of photoluminescence and biocompatibility in CaS phosphor through dopant combinations of Eu3+, Dy3+, and Tm3+
V. Kavitha, M. Prema Rani, D. Sivaganesh, S. Ponsuriyaprakash
Journal of Nanoparticle Research, 2024
UNVEILING THE IMPACT OF ANNEALING ON CHEMICAL BATH DEPOSITION-SYNTHESIZED CALCIUM ZIRCONATE THIN-FILMS: STRUCTURAL, MORPHOLOGICAL, OPTICAL, CHEMICAL COMPOSITION, AND LUMINESCENT CHARACTERISTICS
N. KARTHICK KUMAR, M. KAVITHA, V. KAVITHA, P. PANDI
Surface Review and Letters, 2024
The chemical bath deposition method (CBD) was used to create thin films of calcium zirconate on a glass substrate. After that, the samples were annealed for an hour at three different temperatures: [Formula: see text]C, [Formula: see text]C, and [Formula: see text]C. The structural parameters of the samples like lattice strain, dislocation density and crystallite size were calculated from XRD analysis. The lattice strain was found to be very low. The crystallite size confirms the nano-size of the synthesized sample. From UV analysis, the optical energy direct bandgap was calculated in the range of 3.98–4.16[Formula: see text]eV. A higher annealing temperature of [Formula: see text]C causes the thin film’s bandgap to diminish, confirming the calcium zirconate thin film’s broad bandgap characteristics. From SEM analysis, morphology, and adhesive nature was analyzed, and from AFM analysis, the grain size of the sample was found to be in 300[Formula: see text]nm.
Unveiling the luminescent brilliance of europium-sourced cerium oxide: a comprehensive exploration for biomedical advancements through in vitro and in vivo studies
K. Vignesh, D. Sivaganesh, V. Kavitha, M. Prema Rani
Applied Physics A Materials Science and Processing, 2023
Sol–gel fabricated Dy3+-activated CaS phosphors: a view on photoluminescence, structural, morphological, lifetime, and in vitro analysis
V. Kavitha, M. Prema Rani, D. Sivaganesh, K. Vignesh
European Physical Journal Plus, 2023
An Investigation of the Luminescence and Hemocompatibility Properties of Eu3+ Doped SrS Synthesized Via Sol–Gel Route
V. Kavitha, M. Prema Rani
Brazilian Journal of Physics, 2023
The influence of Tm3+ on the structural, morphological, lifetime, haemocompatibility, and optical properties of sol–gel-synthesized CaS phosphors
V. Kavitha, M. Prema Rani
Applied Physics A Materials Science and Processing, 2022
Fabrication of red-emitting Eu3+-induced CaS phosphors: a view of optical, in vitro, lifetime, structural and morphological studies for biomedical applications
V. Kavitha, M. Prema Rani
European Physical Journal Plus, 2022

RECENT SCHOLAR PUBLICATIONS

Unravelling substrate impact: insights into properties of barium zirconate thin films synthesized via chemical bath deposition
NK Kumar, M Kavitha, V Kavitha, R Sakthivadivel
Physica Scripta 101 (9), 095903 , 2026
2026
A Novel Hybrid Deposition Approach for Silver Selenide Thin Films: A View on Structural, Morphological, Optical, Thickness, and Luminescence Characterization
N Manikandan, M Kavitha, N Karthick Kumar, V Kavitha, M Manikandan, ...
Surface Review and Letters , 2026
2026
Assessing the Morphological, Optical, and Structural Characteristics of Barium Zirconate Synthesized via Precipitation Technique
N Karthick Kumar, M Kavitha, V Kavitha, G Veera Kumar, Y Saiprasath, ...
Journal of Physics: Conference Series 3047 (1), 012005 , 2025
2025
Delving into the Structural, Optical, and Morphological Properties of AgBr Nanoparticles Synthesized by Chemical Precipitation
N Manikandan, M Kavitha, V Kavitha, N Karthick Kumar, M Manikandan
Journal of Physics: Conference Series 3047 (1), 012003 , 2025
2025
Comprehensive perspectives: fabrication, luminescence, and in-vitro properties of Tm 3+ -doped SrS
V Kavitha, MP Rani, D Sivaganesh
Materials Research Innovations 29 (4), 252-261 , 2025
2025
Citations: 1
UNVEILING THE IMPACT OF ANNEALING ON CHEMICAL BATH DEPOSITION-SYNTHESIZED CALCIUM ZIRCONATE THIN-FILMS: STRUCTURAL, MORPHOLOGICAL, OPTICAL, CHEMICAL COMPOSITION, AND …
NK KUMAR, M Kavitha, V Kavitha, P Pandi
Surface Review and Letters, 2550078 , 2024
2024
Synergistic tuning of photoluminescence and biocompatibility in CaS phosphor through dopant combinations of Eu 3+ , Dy 3+ , and Tm 3+
V Kavitha, MP Rani, D Sivaganesh, S Ponsuriyaprakash
Journal of Nanoparticle Research 26 (5), 95 , 2024
2024
Citations: 4
Unveiling the luminescent brilliance of europium-sourced cerium oxide: a comprehensive exploration for biomedical advancements through in vitro and in vivo studies
K Vignesh, D Sivaganesh, V Kavitha, MP Rani
Applied Physics A 129 (10), 703 , 2023
2023
Sol–gel fabricated Dy 3+ -activated CaS phosphors: a view on photoluminescence, structural, morphological, lifetime, and in vitro analysis
V Kavitha, MP Rani, D Sivaganesh, K Vignesh
The European Physical Journal Plus 138 (9), 853 , 2023
2023
Citations: 4
An Investigation of the Luminescence and Hemocompatibility Properties of Eu 3+ Doped SrS Synthesized Via Sol–Gel Route
V Kavitha, MP Rani
Brazilian Journal of Physics 53 (4), 100 , 2023
2023
Citations: 5
The influence of Tm 3+ on the structural, morphological, lifetime, haemocompatibility, and optical properties of sol–gel-synthesized CaS phosphors
V Kavitha, MP Rani
Applied Physics A 128 (12), 1053 , 2022
2022
Citations: 5
Fabrication of red-emitting Eu 3+ -induced CaS phosphors: a view of optical, in vitro, lifetime, structural and morphological studies for biomedical applications
V Kavitha, MP Rani
The European Physical Journal Plus 137 (11), 1210 , 2022
2022
Citations: 8

MOST CITED SCHOLAR PUBLICATIONS

Fabrication of red-emitting Eu 3+ -induced CaS phosphors: a view of optical, in vitro, lifetime, structural and morphological studies for biomedical applications
V Kavitha, MP Rani
The European Physical Journal Plus 137 (11), 1210 , 2022
2022
Citations: 8
An Investigation of the Luminescence and Hemocompatibility Properties of Eu 3+ Doped SrS Synthesized Via Sol–Gel Route
V Kavitha, MP Rani
Brazilian Journal of Physics 53 (4), 100 , 2023
2023
Citations: 5
The influence of Tm 3+ on the structural, morphological, lifetime, haemocompatibility, and optical properties of sol–gel-synthesized CaS phosphors
V Kavitha, MP Rani
Applied Physics A 128 (12), 1053 , 2022
2022
Citations: 5
Synergistic tuning of photoluminescence and biocompatibility in CaS phosphor through dopant combinations of Eu 3+ , Dy 3+ , and Tm 3+
V Kavitha, MP Rani, D Sivaganesh, S Ponsuriyaprakash
Journal of Nanoparticle Research 26 (5), 95 , 2024
2024
Citations: 4
Sol–gel fabricated Dy 3+ -activated CaS phosphors: a view on photoluminescence, structural, morphological, lifetime, and in vitro analysis
V Kavitha, MP Rani, D Sivaganesh, K Vignesh
The European Physical Journal Plus 138 (9), 853 , 2023
2023
Citations: 4
Comprehensive perspectives: fabrication, luminescence, and in-vitro properties of Tm 3+ -doped SrS
V Kavitha, MP Rani, D Sivaganesh
Materials Research Innovations 29 (4), 252-261 , 2025
2025
Citations: 1
Unravelling substrate impact: insights into properties of barium zirconate thin films synthesized via chemical bath deposition
NK Kumar, M Kavitha, V Kavitha, R Sakthivadivel
Physica Scripta 101 (9), 095903 , 2026
2026
A Novel Hybrid Deposition Approach for Silver Selenide Thin Films: A View on Structural, Morphological, Optical, Thickness, and Luminescence Characterization
N Manikandan, M Kavitha, N Karthick Kumar, V Kavitha, M Manikandan, ...
Surface Review and Letters , 2026
2026
Assessing the Morphological, Optical, and Structural Characteristics of Barium Zirconate Synthesized via Precipitation Technique
N Karthick Kumar, M Kavitha, V Kavitha, G Veera Kumar, Y Saiprasath, ...
Journal of Physics: Conference Series 3047 (1), 012005 , 2025
2025
Delving into the Structural, Optical, and Morphological Properties of AgBr Nanoparticles Synthesized by Chemical Precipitation
N Manikandan, M Kavitha, V Kavitha, N Karthick Kumar, M Manikandan
Journal of Physics: Conference Series 3047 (1), 012003 , 2025
2025
UNVEILING THE IMPACT OF ANNEALING ON CHEMICAL BATH DEPOSITION-SYNTHESIZED CALCIUM ZIRCONATE THIN-FILMS: STRUCTURAL, MORPHOLOGICAL, OPTICAL, CHEMICAL COMPOSITION, AND …
NK KUMAR, M Kavitha, V Kavitha, P Pandi
Surface Review and Letters, 2550078 , 2024
2024
Unveiling the luminescent brilliance of europium-sourced cerium oxide: a comprehensive exploration for biomedical advancements through in vitro and in vivo studies
K Vignesh, D Sivaganesh, V Kavitha, MP Rani
Applied Physics A 129 (10), 703 , 2023
2023

KAVITHA V

RESEARCH, TEACHING, or OTHER INTERESTS

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS