Dr. Raghavendra Sagar

dr-raghavendra-sagar

Dr. Raghavendra Sagar

Position: Associate Professor & HoD
Phone: 8073858832

Educational qualification

M. Sc (Materials Science), PhD

Total experience

10 Year (Teaching), 4 Year (Research)

 

Google Scholar    :              https://scholar.google.com/citations?hl=en&user=58XjnUIAAAAJ

ORCID                  :              https://orcid.org/0000-0003-1779-6351

Publons                :              Web of Science Researcher ID: ABC-4682-2021

Area of Interest

  • Fabrication of nano ceramics for electrical and electronic applications
  • Development of Protective coatings
  • Fabrication and characterization of CZTS
  • CZTSe and Silicon based solar cells
  • Energy storage Materials

Professional Memberships

  • Member of IAAM-International Association of Advanced Materials, Sweden (Membership No. 836301914258)
  • Member of Institute of Natural Science and Advanced Technology (Membership No. RM002300)

Workshops/FDP’S/SDP’S Attended

18

Conference/Journal Publications

Publications

  • Publications in WoS/SCI Journals
    1. RF sputtered metal oxide layers as ARCs to improve photovoltaic performance of commercial monocrystalline solar cell, Raghavendra Sagar, Asha Rao, Optical materials, 150 (2024) 115276. IF:3.8 SCIMAGOJR Ranking: Q1
    2. Electrical and electrochemical characterization of FeCo2O4 nano flakes for flexible supercapacitor applications, K. Samatha, Raghavendra Sagar, Bulletin of Materials Science, Accepted (2024), IF:1.89 SCIMAGOJR Ranking: Q3
    3. High specific capacitance and NTC behavior of substituted cobalt oxide spinels for electrochemical supercapacitor and thermistor applications, Samatha K and Raghavendra Sagar, Inorganic Chemistry Communications, 160 (2024) 112027, IF: 3.8 SCIMAGOJR Ranking: Q2
    4. CoMn2O4 and Cu5Co0.5Mn2O4 spinels as efficient protective coating layers on SUS430 for SOFC interconnect, Nayana Acharya and Raghavendra Sagar, Ceramic International, 49 (2023) 29164-29173, IF:5.53 SCIMAGOJR Ranking: Q1
    5. Microstructure, spectral and frequency dependent electrical studies of Ni and Zn substituted Co3O4 spinels for capacitor applications, K. Samatha, Raghavendra Sagar, Bulletin of Materials Science, 46 (2023) 49, IF:1.89 SCIMAGOJR Ranking: Q3
    6. Electrical and electrochemical properties of nanostructured Ni and Zn substituted Co3O4 spinels for thermistors and supercapacitor applications, K Samatha, H Vijeth, Raghavendra Sagar, Journal of Energy Storage 52 (2022) 104871, IF:8.9 SCIMAGOJR Ranking: Q1
    7. Highly dense Mn3O4 and CuMn2O4 spinels as efficient protective coatings on solid oxide fuel cell interconnect and their chromium diffusion studies, N Acharya, U Chaitra, H Vijeth, Raghavendra Sagar, Journal of Alloys and Compounds (2022)165377 IF:6.3 SCIMAGOJR Ranking: Q1
    8. Coconut flower sheath derived activated charcoal as efficient and cost effective adsorbent for crystal violet dye removal, Ashwini A Kamath, Nandini G Nayak, Raghavendra Sagar, Inorganic Chemistry Communications, (2021) Accepted, IF 2.49. SCIMAGOJR Ranking: Q2
    9. Growth, characterization and SHG studies of Cu (II) doped manganese sulfate monohydrate crystals, Raghavendra Sagar, Asha Rao, Chitrakshi Pratap, Optical and Quantum Electronics, 53(2021) 519. IF: 2.0 SCIMAGOJR Ranking: Q2
    10. Structure and electrical properties characterization of NiMn2O4NTC ceramics, Nayana Acharya, Raghavendra Sagar, Inorganic Chemistry Communications, 132 (2021) 108856. IF: 2.49 SCIMAGOJR Ranking: Q2
    11. Structural and electrical studies of Ni- and Co-substituted Mn3O4, Raghavendra Sagar, A. S Gandhi, Applied Physics A, 84 (2021) 127. IF: 1.8 SCIMAGOJR Ranking: Q2
    12. Nanoscale TiO2 and Ta2O5 as efficient antireflection coatings on commercial monocrystalline silicon solar cell, Raghavendra Sagar, Asha Rao, Journal of Alloys and Compounds, 86(2021)158464 IF: 4.6  SCIMAGOJR Ranking: Q1
    13. Increasing the silicon solar cell efficiency with transition metal oxide nano-thin films as anti-reflection coatings, Raghavendra Sagar and Asha Rao, Materials Research Express, 7(2020) IF: 1.47 SCIMAGOJR Ranking: Q2
    14. Surface modification of silicon solar cell using TiO2 and Ta2O5: fabrication and characterization, Raghavendra Sagar and Asha Rao, Applied Physics A, 125 (2019) 859. IF: 1.8 SCIMAGOJR Ranking: Q2
    15. Effect of Gadolinium on the dielectric and pyroelectric Behavior of Ba(Zr52Ti0.48)O3 Ceramics, Raghavendra Sagar and R L Raibagkar, Ferroelectric Letters, 46 (2019) 99-106. IF: 0.6 SCIMAGOJR Ranking: Q3
    16. Influence Of A-site Substitution on Dielectric and Impedance Behavior of Mn3O4Spinels, Nayana Acharya and Raghavendra Sagar, Ferroelectric Letters, 46(2019)38-45. IF: 0.6 SCIMAGOJAR Ranking: Q3
    17. Microstructure and transport properties of multiwall carbon nanotubes reinforced barium zirconium titanate ceramics, Raghavendra Sagar and R L Raibagkar, Bulletin of Materials Science, 42 (2019)159. IF: 1.0 SCIMAGOJR Ranking: Q2
    18. Structural and electrical studies of nanocrystalline Mn3O4. Raghavendra Sagar, Ferroelectric Letters, 45 (2018) 94-98. IF: 0.6 SCIMAGOJR Ranking: Q3
    19. Synthesis, structure and electrical studies of praseodymium doped barium zirconium titanate, Raghavendra Sagar, Shivanand Madolappa, Nagbasavanna Sharanappa, and R L Raibagkar, Materials Chemistry and Physics, 140 (2013) 119-125. IF: 2.2 SCIMAGOJR Ranking: Q2
    20. Complex impedance and modulus studies of cerium doped barium zirconium titanate solid solution, Raghavendra Sagar, and R. L. Raibagkar, Journal of Alloys and Compounds, 549 (2013) 206–212. IF: 2.5 SCIMAGOJAR Ranking: Q1
    21. Synthesis, structural, thermal and electrical behavior of La-doped Bismuth titanate ceramics, Nagbasavanna Sharanappa, Shivanand Madolappa, Raghavendra Sagar, L. Raibagkar, Ferroelectric Letters, 39 (2012) 81-87. IF: 0.6 SCIMAGOJAR Ranking: Q3
    22. Investigation on microstructure and dielectric behavior of (Ba999-xGd0.001Crx)TiO3, Shivanand Madolappa, Raghavendra Sagar, R L Raibagkar, Bulletin of Materials Science, 36[4] (2012) 601-606. IF: 1.2 SCIMAGOJAR Ranking: Q2
    23. Electrical properties and microwave dielectric behavior of holmium substituted  barium zirconium titanate ceramics,  Raghavendra Sagar, Praveen Hudge, Shivanand Madolappa, A. C. Kumbharkhane and R L Raibagkar, Journal of Alloys and Compounds 537 (2012) 197-202. IF: 2.5 SCIMAGOJAR Ranking: Q1
    24. PTCR and thermoelectric properties of isovalent co-doped BaTiO3 Shivanand Madolappa, Raghavendra Sagar, Nagbasavanna Sharanappa, R L Raibagkar, Ferroelectric Letters, 39 (2012) 20-24. IF: 0.6 SCIMAGOJAR Ranking: Q3
    25. Electrical, dielectric and pyroelectric behavior of Neodymium substituted barium zirconium titanate, Raghavendra Sagar, Shivanand Madolappa and R. L. Raibagkar, Solid State Sciences, 14 (2012) 211-215. IF: 1.9 SCIMAGOJAR Ranking: Q2
    26. NTCR behavior of Sm-substituted barium zirconium titanate nanocrystalline solid solution, Raghavendra Sagar, Shivanand Madolappa and R. L. Raibagkar, Solid State Communications 151 (2011) 1949–1952. IF: 1.5 SCIMAGOJAR Ranking: Q2
    27. Diffuse phase transition and pyroelectric behavior of cerium doped Ba(Zr52Ti0.48)O3, Raghavendra Sagar, Shivanand Madolappa and R. L. Raibagkar, Ferroelectrics Letters, 38 (2011) 128–133. IF: 0.6 SCIMAGOJAR Ranking: Q3
    28. Surface morphology and dielectric behavior of Gd-Doped Ba(Zr52Ti0.48)O3 nanocrystalline ceramics, Raghavendra Sagar, Shivanand Madolappa and R. L. Raibagkar, Transaction of Indian Ceramic Society, 70 [3] (2011) 71-77. IF: 0.5 SCIMAGOJAR Ranking: Q3
    29. Dielectric and impedance studies of Ce-doped Ba(Zr52Ti0.48)O3, Raghavendra Sagar, Shivanand Madolappa, and R L Raibagkar, Integrated Ferroelectrics, 130 (2011) 21-26. IF: 0.5 SCIMAGOJAR Ranking: Q3
    30. Synthesis, structure and electrical investigation of Gd- and Cr-doped BaTiO3 nano particle ceramics. Shivanand Madolappa, Raghavendra Sagar and R. L. Raibagkar, Ferroelectrics, 413 (2011) 37-45. IF: 0.4 SCIMAGOJAR Ranking: Q3

     

    Other indexed journals

    1. Spectral and electrical studies of MnS modified KCl single crystal grown by slow evaporation technique, Chitrakshi, Aashisha Roy, Raghavendra Sagar, Journal of Advanced Physics, 6 (2016) 1-4.
    2. Structure, spectral, electrical, and second harmonic generation studies of Fe3+ doped MnS single crystals, Chitrakshi, Aashisha Roy, Raghavendra Sagar, Cogent Chemistry 2 (2016) 1269599.
    3. Synthesis and structural parameters of (Ba6Sr0.4)(Zr1-xTix)O3 (x=0.4 and 0.5) nanoceramics, Chandrashekhar M Tawde, Raghavendra Sagar, Shivanand Madolappa and R. L. Raibagkar, World Journal of Science and Technology, 1[8] (2011) 12-14.
    4. Structural and transport properties of Ba1-2xGd2x(Zr52Ti0.48)O3 nanocrystals, Raghavendra Sagar, Shivanand Madolappa, and R L Raibagkar, Bionano Frontier, Spl. Issue  (2010) 221-225.  IF: 0.5

     

    Conference Proceedings

    1. Influence of frequency on dielectric and electrical behavior of ZnMn2O4, Nayana Acharya and Raghavendra Sagar, Materials Today Proceeding, 46 (2019) 38-45. IF: 0.4
    2. Influence of temperature of frequency dependent electrical behavior of FeMn2O4, Nayana Acharya and Raghavendra Sagar, Journal of Physics: Conference Series, 1172 (2019) 012020.
    3. Temperature dependent impedance behavior of (Ba6Sr0.4)(Zr0.65Ti0.35)O3, C M Tawade, Nagbasavanna Sharanappa, Shivanand Madolappa, Raghavendra Sagar, R L Raibagkar AIP Conference Proceedings, 1536 (2013) 563-564.
    4. PTCR-NTCR composite behavior of bismuth titanate ceramics, Nagbasavanna Sharanappa, Shivanad Madolappa, Raghavendra Sagar, R L Raibagkar, AIP Conference Proceedings, 1536 (1), 561-562
    5. Surface morphology and dielectric studies of Zr4+-rich barium titanate, Raghavendra Sagar, Shivanand Madolappa, R L Raibagkar, American Institutes of Physics Conference Proceeding, 1349 (2011) 645-646.

     

     

Funded Projects

A study on enhancement of efficiency of solar cells by various modification Techniques/ Synthesis and characterization of NLO materials ( 60 Lakhs) by Vision Group of Science and Technology, Govt. of Karnataka

Fabrication of Graphene/Bio-waste based hybrid system for flexible and high performance supercapacitors ( 2Lakhs) by VTU Belagavi