B.Sc Physics, Madurai Kamaraj University
M.Sc Physics, Madurai Kamaraj University
M.Phill Physics, Mother Terasa Womens University, India
PhD Optoelectronics and Nanoscience, SRM Institute of Science &Technology, Chennai, India
RESEARCH INTERESTS
Solar cell, Nanostructured materials, thermoelectrics
Lattice thermal conductivity below Cahill limit: Negative thermal expansion in Pr doped BiCuSeO R. Amuthan, K. P. Mohamed Jibri, J. Archana, M. Navaneethan Applied Physics Letters, 2026 Fundamental understanding of lattice softening and phonon transport in crystalline solids is crucial for thermoelectric applications, since the design of thermally insulating solids has gained significant interest over the years. In this work, we demonstrate strain induced lattice softening through negative thermal expansion (NTE) in Pr doped BiCuSeO, which breaks the theoretical Cahill limit, κlmin ∼ 0.55 W m−1 K−1, achieving a low κl of 0.24 W m−1 K−1 at 740 K. The Differential Scanning Calorimetry (DSC) and Raman analyses experimentally confirm NTE-driven lattice softening, which influences glass-like thermal transport beyond the theoretical limit. Meanwhile, the negative Gruneisen parameter (−1.13) calculated from reduced average sound velocity, νs∼1870 ms−1, with shrinkage of cell volume illustrates the NTE behavior. Furthermore, the observed weak carrier–phonon coupling μW/κl indicates the absence of conventional carrier scattering through NTE, which leads to a 54% increment in zT compared to undoped BiCuSeO (0.5 at 740 K) for Bi0.97Pr0.03CuSeO.
Synergistic Lattice Softening and Polaron Engineering in Cu2+-Doped Cs2SnCl6: Decoupling Thermal and Electrical Transport for Enhanced Thermoelectric Performance Dhivya Mahalakshmi Chavali Naresh, Mohamed Jibri Khaja Peer, Jayaram Archana, Navaneethan Mani Journal of Physical Chemistry Letters, 2026 Understanding the local lattice distortion in response to charge carriers is pivotal for understanding the mechanisms of electron–phonon coupling in halide perovskites. In this work, we present synergistic lattice softening and polaron engineering in Cu 2+ -doped Cs 2 SnCl 6, revealing mechanisms through which dopant-induced structural perturbations suppress lattice thermal conductivity (κ lat ) while simultaneously enhancing electrical conductivity (σ). Systematic analysis via temperature-dependent Raman spectroscopy and thermal conductivity studies elucidated the mechanism of phonon scattering. The Cu 2+ doping induces chloride vacancies that modulate lattice anharmonicity and acoustic phonon contributions (κ a ) through tensile-stress-induced reduced bond stiffness. Conversely, the charge transport via the small polaron hopping (SPH) mechanism governs that Cu 2+ doping reduces charge carrier activation ( E hop ) from 0.57 to 0.15 eV, facilitating superior electrical conductivity. Thus, rational dopant engineering in halide perovskites enhances the charge carrier, which offers a critical strategy for maximizing the thermoelectric figure of merit ( zT )
Intelligent Battery Management Strategy Kamalraj VR, Dharshine B, Archana J, Dhanush V, Indhumathi R Proceedings of International Conference on Visual Analytics and Data Visualization Icvadv 2025, 2025
Synthesis of TiO2 nanotubes from prepared TiO2 nanoparticles by hydrothermal route and dye sensitized solar cell characteristics International Journal of Chemtech Research, 2015
Enhancing the efficiency of dye-sensitized solar cells using carbon-wrapped nickel-loaded cobalt as a counter electrode AAA Krishna, V Saranya, M Navaneethan, J Archana Diamond and Related Materials, 113770 , 2026 2026
Interface engineering of carbon nanofiber-Supported SnS₂ nanosheets as highly efficient bifunctional electrocatalysts in energy conversion applications MS Nithyapriya, SM Mariappan, M Navaneethan, J Archana Diamond and Related Materials, 113752 , 2026 2026
Tuning chemical potential and phonon transport induced an enhanced thermoelectric performance in Ce incorporated Bi2S3 nanostructures E Karvannan, V Vijay, TS Nivin, M Navaneethan, J Archana, ... Journal of Power Sources 672, 239380 , 2026 2026
Lattice thermal conductivity below Cahill limit: Negative thermal expansion in Pr doped BiCuSeO R Amuthan, KP Jibri, J Archana, M Navaneethan Applied Physics Letters 128 (17) , 2026 2026
Harnessing the heterostructure linkage of NiFe-layered double hydroxide and Ni3S4 for overall urea electrolysis R Vengadesh, T Susikumar, J Archana, S Mathimalar, SY Ryu, PJ Jesuraj International Journal of Hydrogen Energy 228, 154682 , 2026 2026
Synergistic Lattice Softening and Polaron Engineering in Cu 2+ -Doped Cs 2 SnCl 6 : Decoupling Thermal and Electrical Transport for Enhanced Thermoelectric … DM Chavali Naresh, MJ Khaja Peer, J Archana, N Mani The Journal of Physical Chemistry Letters 17 (10), 3030-3038 , 2026 2026
Tailored ZnCr 2 O 4 /V 2 O 5 n–n heterojunction for high-efficiency photocatalytic degradation of MB and CIP under visible light irradiation K Bharathi, M Sudha, G Bakiyaraj, J Archana, M Navaneethan Emergent Materials 9 (1), 57 , 2026 2026
Tuning the phonon dynamics via Sn-resonant impurities assists strong anharmonicity in p-type Zintl Mg3Sb2 S Priyadharshini, V Vijay, J Archana, M Navaneethan Applied Physics Letters 128 (6) , 2026 2026
Comparative study of densification techniques for tailoring the thermoelectric behavior of Bi 2 Se 3 K Senthil Kumar, K Arun, J Archana, N Mani, SK Eswaran Journal of Materials Science: Materials in Electronics 37 (3), 280 , 2026 2026 Citations: 1
Modulating spin states in dual active sites of CoFe electrocatalysts for energy harvesting applications V Saranya, SM Mariappan, M Navaneethan, J Archana Journal of Materials Chemistry A , 2026 2026
Simultaneous epitaxial growth of Cu2O/ZnO heterostructure thin film on MgO (0 0 1) substrate by dynamic aurora PLD technique for room temperature NO2 gas sensing K Gunasekaran, S Kalaimathi, DK Kumar, T Kawaguchi, N Sakamoto, ... Applied Surface Science, 165718 , 2025 2025 Citations: 2
Room temperature ppb detection of nitrous oxide with work function tuned K+ intercalated SnS nanorods E Vinoth, SM Mariappan, RA Parveen, J Archana, S Ponnusamy, ... Chemical Physics Letters, 142603 , 2025 2025
BiVO4/AgFeO2 nn heterojunction photocatalytic: Synergistic degradation of emerging contaminants (Ciprofloxacin and Methylene Blue) N Sadanandan, K Bharathi, G Bakiyaraj, J Archana, M Navaneethan Results in Surfaces and Interfaces, 100692 , 2025 2025
Spin Polarization and Oxygen Vacancy Engineering in Mn-Doped ZnCo2O4 Spinels for Enhanced Photocatalysis T Govindaraj, K Bharathi, C Kanagaraj, J Archana, M Navaneethan Journal of Environmental Chemical Engineering, 120566 , 2025 2025 Citations: 2
Tunable polaronic transport and thermal conductivity in K + doped 0D metal halide perovskite Cs 3 Bi 2 I 9 CN Mahalakshmi, KP Jibri, J Archana, M Navaneethan APPLIED PHYSICS LETTERS 127 (22) , 2025 2025
Tunable polaronic transport and thermal conductivity in K+ doped 0D metal halide perovskite Cs3Bi2I9 DM C N, KP Mohamed Jibri, J Archana, M Navaneethan Applied Physics Letters 127 (22) , 2025 2025 Citations: 1
A stable photoanode tailored by mesosphere TiO2 decorated SnO2 nanobeads exceeding power conversion efficiency of 9.09% through Fermi energy modulation impacting on electron … S Athithya, K Gunasekaran, S Kamalakannan, SM Mariappan, S Harish, ... Materials Research Bulletin 192, 113564 , 2025 2025 Citations: 3
Regulating lattice dynamics via reinforced the miscibility gap in Mg2Si0. 6Sn0. 4 solid solution for thermoelectric application M Saran, V Vijay, C Kanagaraj, M Navaneethan, PJ Jesuraj, J Archana Materials Research Bulletin 192, 113542 , 2025 2025 Citations: 1
Structural Modification-Controlled Morphological WS2 Nanostrands via CTAB-Assisted Hydrothermal Route for Fast and Selective NO2 Detection DS Patrick, DK Kumar, MK Mohan, J Archana, M Navaneethan Sensors and Actuators B: Chemical, 139229 , 2025 2025 Citations: 2
Realizing the Mg2Si1-XSnX solid solution for enhanced thermoelectric performance via conduction band reformation M Saran, V Vijay, C Kanagaraj, M Navaneethan, PJ Jesuraj, J Archana Materials Science in Semiconductor Processing 199, 109795 , 2025 2025 Citations: 1
MOST CITED SCHOLAR PUBLICATIONS
Controlled structural and compositional characteristic of visible light active ZnO/CuO photocatalyst for the degradation of organic pollutant S Harish, J Archana, M Sabarinathan, M Navaneethan, KD Nisha, ... Applied Surface Science 418, 103-112 , 2017 2017 Citations: 207
Enhanced charge transfer and separation of hierarchical CuO/ZnO composites: The synergistic effect of photocatalysis for the mineralization of organic pollutant in water P Bharathi, S Harish, J Archana, M Navaneethan, S Ponnusamy, ... Applied Surface Science 484, 884-891 , 2019 2019 Citations: 135
Highly efficient visible-light photocatalytic activity of MoS 2–TiO 2 mixtures hybrid photocatalyst and functional properties M Sabarinathan, S Harish, J Archana, M Navaneethan, H Ikeda, ... RSC advances 7 (40), 24754-24763 , 2017 2017 Citations: 132
Ultrathin layered MoS2 and N-doped graphene quantum dots (N-GQDs) anchored reduced graphene oxide (rGO) nanocomposite-based counter electrode for dye-sensitized solar cells K Silambarasan, S Harish, K Hara, J Archana, M Navaneethan Carbon 181, 107-117 , 2021 2021 Citations: 105
Growth and influence of Gd doping on ZnO nanostructures for enhanced optical, structural properties and gas sensing applications P Bharathi, MK Mohan, V Shalini, S Harish, M Navaneethan, J Archana, ... Applied Surface Science 499, 143857 , 2020 2020 Citations: 99
Fabrication of WO3 nanorods/RGO hybrid nanostructures for enhanced visible-light-driven photocatalytic degradation of Ciprofloxacin and Rhodamine B in an ecosystem T Govindaraj, C Mahendran, VS Manikandan, J Archana, M Shkir, ... Journal of Alloys and Compounds 868, 159091 , 2021 2021 Citations: 98
Hydrothermal growth of reduced graphene oxide on cotton fabric for enhanced ultraviolet protection applications V Pandiyarasan, J Archana, A Pavithra, V Ashwin, M Navaneethan, ... Materials Letters 188, 123-126 , 2017 2017 Citations: 98
Fabrication of novel hybrid Z-Scheme WO3@ g-C3N4@ MWCNT nanostructure for photocatalytic degradation of tetracycline and the evaluation of antimicrobial activity VS Manikandan, S Harish, J Archana, M Navaneethan Chemosphere 287, 132050 , 2022 2022 Citations: 96
Perspective on ultrathin layered Ni-doped MoS2 hybrid nanostructures for the enhancement of electrochemical properties in supercapacitors K Prakash, S Harish, S Kamalakannan, T Logu, M Shimomura, J Archana, ... Journal of Energy Chemistry 80, 335-349 , 2023 2023 Citations: 93
Controlled synthesis of organic ligand passivated ZnO nanostructures and their photocatalytic activity under visible light irradiation S Harish, M Navaneethan, J Archana, A Silambarasan, S Ponnusamy, ... Dalton Transactions 44 (22), 10490-10498 , 2015 2015 Citations: 87
Enhanced selectivity and ultra-fast detection of NO2 gas sensor via Ag modified WO3 nanostructures for gas sensing applications G Mathankumar, S Harish, MK Mohan, P Bharathi, SK Kannan, J Archana, ... Sensors and Actuators B: Chemical 381, 133374 , 2023 2023 Citations: 83
Fabrication of hierarchical ZnO nanostructures on cotton fabric for wearable device applications V Pandiyarasan, S Suhasini, J Archana, M Navaneethan, A Majumdar, ... Applied Surface Science 418, 352-361 , 2017 2017 Citations: 75
Conductometric NO2 gas sensor based on Co-incorporated MoS2 nanosheets for room temperature applications P Bharathi, S Harish, M Shimomura, S Ponnusamy, MK Mohan, J Archana, ... Sensors and Actuators B: Chemical 360, 131600 , 2022 2022 Citations: 73
Ultrathin layered mos 2 nanosheets with rich active sites for enhanced visible light photocatalytic activity R Abinaya, J Archana, S Harish, M Navaneethan, S Ponnusamy, ... RSC advances 8 (47), 26664-26675 , 2018 2018 Citations: 73
Erbium doped TiO2 interconnected mesoporous spheres as an efficient visible light catalyst for photocatalytic applications K Singh, S Harish, AP Kristy, V Shivani, J Archana, M Navaneethan, ... Applied Surface Science 449, 755-763 , 2018 2018 Citations: 71
Design and fabrication of PANI/GO nanocomposite for enhanced room-temperature thermoelectric application V Shalini, M Navaneethan, S Harish, J Archana, S Ponnusamy, H Ikeda, ... Applied Surface Science 493, 1350-1360 , 2019 2019 Citations: 70
Hierarchical NiO@ NiS@ graphene nanocomposite as a sustainable counter electrode for Pt free dye-sensitized solar cell K Silambarasan, J Archana, S Athithya, S Harish, RS Ganesh, ... Applied Surface Science 501, 144010 , 2020 2020 Citations: 64
Enhanced performance on capacity retention of hierarchical NiS hexagonal nanoplate for highly stable asymmetric supercapacitor S Harish, AN Naveen, R Abinaya, J Archana, R Ramesh, M Navaneethan, ... Electrochimica Acta 283, 1053-1062 , 2018 2018 Citations: 64
Synergetic effect of CuS@ ZnS nanostructures on photocatalytic degradation of organic pollutant under visible light irradiation S Harish, J Archana, M Navaneethan, S Ponnusamy, A Singh, V Gupta, ... RSC advances 7 (55), 34366-34375 , 2017 2017 Citations: 63
Functional properties of amine-passivated ZnO nanostructures and dye-sensitized solar cell characteristics M Navaneethan, J Archana, M Arivanandhan, Y Hayakawa Chemical engineering journal 213, 70-77 , 2012 2012 Citations: 63