Journals (SCI)

  1. Rajaramanan, T.; Keykhaei, M.; Gourji, F.H.; Ravirajan, P.; Senthilnanthanan, M.; Frette, Ø.; Velauthapillai, D. Eco-friendly Egyptian blue (CaCuSi4O10) dye for luminescent solar concentrator applications. Materials Advances 2023. Scopus, SCI expanded, Impact Factor: 3.181(Q2)
  2. Rajaramanan, T.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. A facile impregnation synthesis of Ni-doped TiO2 nanomaterials for dye-sensitized solar cells. Journal of Materials Science: Materials in Electronics 2023, 34, 916. Scopus, SCI expanded, Impact Factor: 2.779(Q2)
  3. Rajaramanan, T.; Heidari Gourji, F.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. Enhanced Photovoltaic Properties of Dye-Sensitized Solar Cells through Ammonium Hydroxide-Modified (Nitrogen-Doped) Titania Photoanodes. International Journal of Energy Research 2023, 2023, 1090174. Scopus, SCI expanded, Impact Factor: 4.672(Q1).
  4. Thivakarasarma, T.; Lakmal, A. A. I.; Dassanayake, B. S.; Velauthapillai, D.; Ravirajan, P.  Thermally Evaporated Copper Iodide Hole-Transporter for Stable CdS/CdTe Thin-Film Solar Cells. Nanomaterials 2022, 12(14). Scopus, SCI expanded, Impact Factor: 5.719(Q1).
  5. Abiram, G.; Thanihaichelvan, M.; Ravirajan, P.; Velauthapillai, D. Review on Perovskite Semiconductor Field-Effect Transistors and Their Applications. Nanomaterials 2022, 12, 2396. Scopus, SCI expanded, Impact Factor: 5.719(Q1).
  6. Chapa Pamodani Wanniarachchi, W.A.; Eidsvåg, H.; Arunasalam, T.; Ravirajan, P.; Velauthapillai, D.; Vajeeston, P. Cs2AgBiBr6 as a mixed anion perovskites for photovoltaic applications: A first-principle study. Materials Today: Proceedings 2022. Scopus, SCI expanded, Impact Factor: 1.46.
  7. Mohandas, P.; Anni, J. S.; Hasikin, K.; Velauthapillai, D.; Raj, V.; Murugathas, T.; Azizan, M. M.; Thanasekaran, R.  Machine Learning Approach Regarding the Classification and Prediction of Dog Sounds: A Case Study of South Indian Breeds. Applied Sciences (Switzerland) 2022, 12(20).Scopus, SCI expanded, Impact Factor: 2.838(Q2).
  8. Murugathas, T.; Veena, R.; Plank, N. O. V; Keerththinaathan, P.; Petra, I.; Mohandas, P. Prediction of Electronic parameters of Carbon Nanotube random network Field-effect Transistors under liquid gated conditions using a machine learning approach. 2022 IEEE International Conference on Nanoelectronics, Nanophotonics, Nanomaterials, Nanobioscience and Nanotechnology, 5NANO 2022.
  9. Kajana, T.; Pirashanthan, A.; Velauthapillai, D.; Yuvapragasam, A.; Yohi, S.; Ravirajan, P.; Senthilnanthanan, M. Potential transition and post-transition metal sulfides as efficient electrodes for energy storage applications: review. RSC Advances 2022, 12, 18041-18062. Scopus, SCI expanded, Impact Factor: 4.036(Q1).
  10. Pirashanthan, A.; Kajana, T.; Velauthapillai, D.; Shivatharsiny, Y.; Bentouba, S.; Ravirajan, P. Roles of Interfacial Modifiers in Inorganic Titania/Organic Poly(3-hexylthiophene) Heterojunction Hybrid Solar Cells. Nanomaterials 2022, 12. Scopus, SCI expanded, Impact Factor: 5.719(Q1).
  11. Abiram, G.; Gourji, F.H.; Pitchaiya, S.; Ravirajan, P.; Murugathas, T.; Velauthapillai, D. Air processed Cs2AgBiBr6 lead-free double perovskite high-mobility thin-film field-effect transistors. Scientific Reports 2022, 12, 2455. Scopus, SCI expanded, Impact Factor: 4.996(Q1).
  12. Kajana, T.; Pirashanthan, A.; Yuvapragasam, A.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. Bimetallic AC/Ag2CrO4/SnS heterostructure photoanode for energy conversion and storage: A self-powered Photocapacitor. J. Power Sources 2022, 520, 230883. Scopus, SCI expanded, Impact Factor: 9.794(Q1).
  13. Shanmugaratnam, S.; Yogenthiran, E.; Koodali, R.; Ravirajan, P.; Velauthapillai, D.; Shivatharsiny, Y. Recent Progress and Approaches on Transition Metal Chalcogenides for Hydrogen Production. Energies 2021, 14, 8265. Scopus, SCI expanded, Impact Factor: 3.252(Q1).
  14. Bentouba, S.; Bourouis, M.; Zioui, N.; Pirashanthan, A.; Velauthapillai, D. Performance assessment of a 20 MW photovoltaic power plant in a hot climate using real data and simulation tools. Energy Reports 2021, 7, 7297–7314.  Scopus, SCI expanded, Impact Factor: 4.937(Q1).
  15. Pirashanthan, A.; Velauthapillai, D.; Robertson, N.; Ravirajan, P. Lithium doped poly (3-hexylthiophene) for efficient hole transporter and sensitizer in metal free quaterthiophene dye treated hybrid solar cells. Sci. Rep. 2021, 11, 1–8. Scopus, SCI expanded, Impact Factor: 4.996(Q1).
  16. Pirashanthan, A.; Thanihaichelvan, M.; Mariappan, K.; Dhayalan, V.; Ravirajan, P.; Yohi, S. Synthesis of a carboxylic acid-based ruthenium sensitizer and its applicability towards Dye-Sensitized Solar Cells. Sol. Energy 2021, 225, 399–406. Scopus, SCI expanded, Impact Factor: 7.188(Q1).
  17. Rajaramanan, T.; Kumara, G.R.A.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. Materials Science in Semiconductor Processing Ni / N co-doped P25 TiO2 photoelectrodes for efficient Dye-Sensitized Solar Cells. Mater. Sci. Semicond. Process. 2021, 135, 106062. Scopus, SCI expanded, Impact Factor: 4.644(Q1).
  18. Rajaramanan, T.; Shanmugaratnam, S.; Gurunanthanan, V.; Yohi, S.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. Cost Effective Solvothermal Method to Synthesize Zn-Doped TiO2Nanomaterials for Photovoltaic and Photocatalytic Degradation Applications. Catalysts2021, 11, 690. Scopus, SCI expanded, Impact Factor: 4.501(Q2).
  19. Shanmugaratnam,S.; Selvaratnam,B; Baride,A.; Koodali,R; Ravirajan,P.; Velauthapillai,P.; Shivatharsiny,Y. SnS2/TiO2 Nanocomposites for Hydrogen Production and Photodegradation under Extended Solar Irradiation; Catalysts 2021, 11, 589. Scopus, SCI expanded, Impact Factor: 4.501(Q2).
  20. Kajana, T.; Velauthapillai, D.; Shivatharsiny, Y.; Ravirajan, P.; Yuvapragasam, A.; Senthilnanthanan, M. Structural and photoelectrochemical characterization of heterostructured carbon sheet/Ag2MoO4-SnS/Pt photocapacitor. Journal of Photochemistry and Photobiology A: Chemistry 2020, 401, 112784. Scopus, SCI expanded, Impact Factor: 5.141(Q1).
  21. Siva, U.; Murugathas, T.; Yohi, S.; Natarajan, M.; Velauthapillai, D.; Ravirajan, P. Single walled carbon nanotube incorporated Titanium dioxide and Poly(3-hexylthiophene) as electron and hole transport materials for perovskite solar cells. Materials Letters 2020, 276, 128174.Scopus, SCI expanded, Impact Factor: 3.574(Q1).
  22. Pirashanthan, A.; Murugathas, T.; Mariappan, K.; Ravirajan, P.; Velauthapillai, D.; Yohi, S. A Multifunctional Ruthenium based Dye for Hybrid Nanocrystalline Titanium dioxide/Poly (3-hexylthiophene) Solar Cells. Materials Letters 2020, 127997. Scopus, SCI expanded, Impact Factor: 3.574(Q1).
  23. Pitchaiya, S.; Eswaramoorthy, N.; Natarajan, M.; Santhanam, A.; Asokan, V.; Ramakrishnan, V.M.; Rangasamy, B.; Sundaram, S.; Ravirajan, P.; Velauthapillai, D. perovskite Solar cells: A porous Graphitic carbon based Hole transporter/counter electrode Material extracted from an invasive plant Species Eichhornia Crassipes. Scientific Reports 2020, 10, 1-16. Scopus, SCI expanded, Impact Factor: 4.996(Q1).
  24. Rajaramanan, T.; Natarajan, M.; Ravirajan, P.; Senthilnanthanan, M.; Velauthapillai, D. Ruthenium (Ru) doped Titanium Dioxide (P25) Electrode for Dye Sensitized Solar Cells. Energies 2020, 13, 1532. Scopus, SCI expanded, Impact Factor: 3.252(Q1).
  25. Prabavathy, N.; Balasundaraprabhu, R.; Balaji, G.; Malikaramage, A.; Prasanna, S.; Sivakumaran, K.; Kumara, G.; Rajapakse, R.; Velauthapillai, D. Investigations on the photo catalytic activity of calcium doped TiO2photo electrode for enhanced efficiency of anthocyanins based dye sensitized solar cells. Journal of Photochemistry and Photobiology A: Chemistry 2019, 377, 43 57. Scopus, SCI expanded, Impact Factor: 5.141(Q1).
  26. Fernando, H.; Raveendran, P.; Christy, A.A.; Dhayalan, V. Water Adsorption Properties of Titanium (IV) Oxide Embedded in Multiwalled Carbon Nanotubes (CNT). In Proceedings of Key Engineering Materials; pp. 182-186. Impact Factor:0.49
  27. Pirashanthan, A.; Murugathas, T.; Robertson, N.; Ravirajan, P.; Velauthapillai, D. A Quarterthiophene-Based Dye as an Efficient Interface Modifier for Hybrid Titanium Dioxide/Poly (3-hexylthiophene)(P3HT) Solar Cells. Polymers 2019, 11, 1752. Scopus, SCI expanded, Impact Factor: 4.967(Q1).
  28. Shanmugaratnam, S.; Velauthapillai, D.; Ravirajan, P.; Christy, A.A.; Shivatharsiny, Y. CoS2/ TiO2Nanocomposites for Hydrogen Production under UV Irradiation. Materials 2019, 12, 3882. Scopus, SCI expanded, Impact Factor: 3.748(Q2).
  29. Thanihaichelvan, M.; Loheeswaran, S.; Balashangar, K.; Velauthapillai, D.; Ravirajan, P. Polymer/Fullerene Blend Solar Cells with Cadmium Sulfide Thin Film as an Alternative Hole-Blocking Layer. Polymers 2019, 11, 460. Scopus, SCI expanded, Impact Factor: 4.967(Q1).
  30. Uthayaraj, S.; Karunarathne, D.; Kumara, G.; Murugathas, T.; Rasalingam, S.; Rajapakse, R.; Ravirajan, P.; Velauthapillai, D. Powder Pressed Cuprous Iodide (CuI) as A Hole Transporting Material for Perovskite Solar Cells. Materials 2019, 12, 2037. Scopus, SCI expanded, Impact Factor: 3.748(Q2).
  31. Balashangar, K.; Paranthaman, S.; Thanihaichelvan, M.; Amalraj, P.; Velauthapillai, D.; Ravirajan, P. Multi-walled carbon nanotube incorporated nanoporous titanium dioxide electrodes for hybrid polymer solar cells. Materials Letters 2018, 219, 265-268.Scopus, SCI expanded, Impact Factor: 3.574(Q1).
  32. Karunanantharajah, P.; Thuraisamykurukkal, T.; Punniamoorthy, R.; Planells, M.; Robertson, N.; Nelson, J. Enhancement of hole-mobility in Hybrid Titanium Dioxide/Poly (3-hexylthiophene) Nanocomposites by Employing an Oligothiophene dye as Interface Modifier.Journal of Materials ChemistryC, 2017 , 5 (45), 11758-11762. Scopus, SCI expanded, Impact Factor: 8.067(Q1).
  33. Thanihaichelvan, M.; Kodikara, M.M.P.S.; Ravirajan, P.; Velauthapillai, D. Enhanced performance of nanoporous titanium dioxide solar cells using cadmium sulfide and poly (3-hexylthiophene) co-sensitizers. Polymers 2017, 9, 467. Scopus,SCI expanded, Impact Factor: 4.967(Q1).
SCImago Journal Rank
Q1 – First quartile (0 – 25%)
Q2 – Second quartile (25%-50%)


Conference Articles

  1. Shanmugaratnam, S.; Ravirajan, P.; Dhayalan, V.; Yohi, S. “NiS2/TiO2 nanocomposites for photocatalytic hydrogen production under extended solar irradiation”, 26th Annual Technological Advances in Science, Medicine and Engineering International Conference (TASME-2022),Virtual, 27-28 August 2022.
  2. Suthajini, T.; Kajana, T.; Dhayalan, V.; Yohi, S. “Multiwalled Carbon nanotube/Natural Polymer/SnO2 composite electrode for microbial fuel cell”, 26th Annual Technological Advances in Science, Medicine and Engineering International Conference (TASME-2022),Virtual, 27-28 August 2022.
  3. Wanniarachchi, W.C.P.; Eidsvåg, H.; Thevakaran, A.; Ravirajan, P.; Velauthapillai, D; Vajeeston, P. “First principle investigations of Cesium based lead free inorganic double perovskites”, 26th Annual Technological Advances in Science, Medicine and Engineering Conference(TASME-2022), Virtual, 27-28 August 2022.
  4. Senevirathna, H.M.C.U.; Rajaramanan, T.; Dhayalan,V.; Ravirajan,P. ” Natural dyes extracted from Catharanthus flower petals for dye-sensitized solar cells application”, Undergraduate Research Symposium, 2022 (URS 2022), University of Jaffna, Sri Lanka, 17th February 2022.
  5. Gunasekara, M.S.S.; Thivakarasarma,T.; Dhayalan,V.; Ravirajan,P. ”Influenceof post-annealing temperature on the properties of thermally evaporated CuIthin film”, Undergraduate Research Symposium, 2022 (URS 2022), University of Jaffna, Sri Lanka, 17th February 2022.
  6.  Rajaramanan, T.; Dhayalan,V.; Ravirajan,P.; Senthilnanthanan, M. “Facile synthesis of Ni-doped, N-doped and Ni/N co-doped TiO2 nanomaterials for DSSC application”, Functional mAterials for eneRgy, environment, And biOmedical applicatioNs, 2022 (FARAON – 2022), Madurai Kamaraj University, India, Virtual, 2-4, February 2022.
  7. Kajana, T.; Pirashanthan, A.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. “Electrochemical performance of supercapacitor based on Silver Molybdate electrode”, Functional mAterials for eneRgy, environment, And biOmedical applicatioNs, 2022 (FARAON – 2022), Madurai Kamaraj University, India, Virtual, 2-4, February 2022.
  8. Sivagowri,S.; Swathi,S.; Elilan, Y.; Yuvakkumar,R.; Ravirajan, P.; Dhayalan, V.; Yohi, S.; “Electrochemical water oxidation of Metal chalcogenide (MS2.; M=Co, Ni, Sn) embedded TiO2 nanocomposite”, Functional mAterials for eneRgy, environment, And biOmedical applicatioNs, 2022 (FARAON – 2022), Madurai Kamaraj University, India, Virtual, 2-4, February 2022.
  9. Sivagowri,S.; Ravirajan, P.; Dhayalan, V.; Yohi, S.; “Photocatalytic hydrogen production through water-splitting on Metalchalcogenide materials combined with TiO2”, Technological Advances in Science, Medicine and Engineering Conference(TASME-2021), Virtual, 3-4 July 2021.
  10. Mohanaramanan,T.; Thivakarasarma,T.; Kumarasinghe,R.G.; Dassanayake,B.S.; Dhayalan,V.; Ravirajan,P. ”Influence of Annealing time for spray coated CdCl2on CdS/CdTe thin-film solar cells”, Technological Advances in Science, Medicine and Engineering Conference(TASME-2021), Virtual, 3-4 July 2021.
  11. Rajaramanan,T.; Thivasen, J.; Gurunanthanan, V.; Yohi, S.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. “Selected Transition Metals (Zn, Ni, Ru) Doped TiO2 Photoanodes for Dye Sensitized Solar Cells”, Technological Advances in Science, Medicine and Engineering Conference 2021(TASME2021), Virtual, 2-4 July 2021.
  12. Gurunanthanan, V.; Rajaramanan,T.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. “Facile fabrication of nitrogen-doped Titanium dioxide-based dye-sensitized solar cells”, Undergraduate Research Symposium, 2021 (URS 2021), University of Jaffna, Sri Lanka, 29thJanuary 2021.
  13. Ekanayaka,E.; Senthuran,K.; Somajayan,DP.; Piyasena,K.; Vignarooban,K.; Senthuran,S; Thevakaran,A; Ravirajan,P. “Design and feasibility study of parabolic trough concentrated solar power water heater for domestic use in Sri Lanka”, Undergraduate Research Symposium, 2021 (URS 2021), University of Jaffna, Sri Lanka, 29thJanuary 2021.
  14. Risendiralingam,R.;Uthayaraj,S.;Thanihaichelvan,M.;Piyasena,K.;Velauthapillai,D.;Ravirajan,P. “Effect of Nickel doping in P3HT hole transporting material on the performance of perovskite solar cells”, Undergraduate Research Symposium, 2021 (URS 2021), University of Jaffna, Sri Lanka, 29thJanuary 2021.
  15. Kajana, T.; Yuvapragasam, A.; Rasalingam, S.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. A Novel Heterostructured Ag2CrO4: SnS Nanomaterial for Energy Conversion & Storage, International Conference on Chemistry and Pharmaceutical Chemistry, Scientific Meditech, London, 12th March, 2021.
  16. Kajana, T.; Velauthapillai, D.; Shivatharsiny, Y.; Ravirajan, P.; Yuvapragasam, A.; Senthilnanthanan, M. “Activated Carbon /Ag2MoO4-SnS heterostructured photocapacitor for solar energy harvest and storage’’, International virtual conference on recent trends in energy materials (INCRTEM 2020), Thamil Nadu, India, 9-11 September 2020.
  17. Thivasen, J.; Rajaramanan, T.; Gurunanthanan, V.; Pirashanthan, A.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. “Nickel doped P25-TiO2 photoanode for Dye Sensitised Solar cells’’, International virtual conference on recent trends in energy materials (INCRTEM 2020), Thamil Nadu, India, 9-11 September 2020.
  18. Shanmugaratnam, S.; Selvaratnam, B.; Baride, A.; Koodali, R.; Ravirajan, P.; Velauthapillai, D.; Shivatharsiny, Y. “Impact of SnS2-TiO2 nanocomposites on photocatalytic hydrogen evolution over extended solar irradiation’’, International virtual conference on recent trends in energy materials (INCRTEM 2020), Thamil Nadu, India, 9-11 September 2020.
  19. Kajana, T.; Velauthapillai, D.; Shivatharsiny, Y.; Ravirajan, P.; Yuvapragasam, A.; Senthilnanthanan, M. A Novel Heterostructured Ag2CrO4 : SnS Nanomaterial for Energy Conversion & Storage, International Conference on Chemistry and Phamaceutical Chemistry, London, 22-23 June 2020.
  20. Kajana, T.; Velauthapillai, D.; Shivatharsiny, Y.; Ravirajan, P.; Yuvapragasam, A.; Senthilnanthanan, M. Structural and photoelectrochemical characterization of heterostructured Ag2MoO4-SnS2coated carbon sheet photocapacitor, Proceedings of the International Conference on Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019), Jaffna, Sri Lanka, 6-8 February 2019.
  21. Sivagowri, S.; Velauthapillai, D.; Ravirajan, P.; Christy, A.A.; Yohi, S. Impact of CoS2/TiO2nanocomposite on Photocatalytic Degradation and Hydrogen production: A synergistic approach under extended solar irradiation, International Conference on Chemistry and Phamaceutical Chemistry, London, 22-23 June 2020.
  22. Sivagowri, S.; Ravirajan, P.; Velauthapillai, D.; Christy, A. A.; Shivatharsiny, R. Cobalt disulfide embedded TiO2nanocomposites for hydrogen production under UV irradiation, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019), Jaffna, Sri Lanka, 6-8 February 2019.
  23. Malikaramge, A.S.; Rajapakshe, D.; Rjapakse, R.M.G.; Kumara, G. R. A.;  Velauthapillai, D.; Ravirajan, P. Synthesis and characterization of Silver deposited Iridium doped TiO2Nano composites and their applications in photon up conversion, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019), Jaffna, , Sri Lanka, 6-8 February 2019.
  24. Pirashanthan,A.; Suganya, S.; Thanihaichelvan, M.; Robertson, N.; Velauthapillai, D.; Ravirajan, P. Efficient Hybrid Titanium dioxide / Poly-3-hexylthiophene Solar Cells using an oligothiophene dye as an interface modifier, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019), Jaffna, , Sri Lanka, 6-8 February 2019.
  25. Rajaramanan,T.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. Enhancing the performance of dye sensitized solar cells using Ru-doped TiO2electrode, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019), Jaffna, , Sri Lanka, 6-8 February 2019.
  26. Tharmalingam, S.; Uthayaraj, S.; Pirashanthan, A.; Shivatharsiny, R.; Velauthapillai, D.; Ravirajan, P.Optimizing the performance of perovskite solar cells by varying active layer thickness, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019), Jaffna, Sri Lanka, 6-8 February 2019.
  27. Ubeysekara, Malikaramage, A.S.; Ramakrishnan, V.; G. Rajapakshe, R.M.G.;  Velauthapillai, D.; Ravirajan, P.; Silver nanoparticles-decorated visible light responsive titania nano-rods for Dye Sensitized Solar Cells, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019),Jaffna, Sri Lanka, 6-8 February 2019.
  28. Shivatharsiny, R.;  Pirashanthan, A.; Thanihaichelvan, M.; Mariappan, K.; Velauthapillai, D.; Ravirajan, P. Multifunctionality of novel Ruthenium Dye (RuC) as an interface modifier for Nanocrystalline TiO2/Poly (3-hexylthiophene) hybrid Solar Cells, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019),Jaffna, Sri Lanka, 6-8 February 2019.
  29. Kumari, Mohanaramanan, T.; Atapattu, H.; De Silva, S.; Ravirajan, P. Alternative back contact materials for CdS/CdTe thin film solar cells, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019),Jaffna, Sri Lanka, 6-8 February 2019.
  30. Uthayaraj, S.; Shivatharsiny, R.; Selvakumar, P.; Kumara, G. R. A.; Rajapakse , R.M.G.;   Velauthappillai, D.; Ravirajan, P. Effect of Hole Transporting Materials on the performance of Perovskite solar cells in air, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019),Jaffna, Sri Lanka, 6-8 February 2019.
  31. Malikaramge, A.S.;  Prabawathy, N.; Rjapakse, R.M.G.;  Kumara, G. R. A.; Velauthapillai, D.; Ravirajan, P. Application and characterization of blueberry fruit pigment as the photosensitizer for high performance and stable natural DSSC, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019), Jaffna, Sri Lanka, 6-8 Feb 2019.
  32. Thanihaichchelvan, M.; Selvadurai, L.; Balashangar, K.; Velauthapillai, D.; Ravirajan, P. Titanium dioxide and Cadmium sulfide thin films as the hole-blocking layer for P3HT:PCBM bulk-hetero-junction solar cells, Proceeding of Advanced Materials for Clean Energy and Health Applications (AMCEHA-2019), Jaffna, Sri Lanka, 6-8 February 2019.
  33. Thivakarasharma, T.; Prashanthan, K.; Thanihaichelvan, M.; Balashangar, K.; Amalraj, P.A.; Robertson, N.; Nelson, J.; Velauthapillai, D.; Ravirajan, P. Strategies to improve charge transport in hybrid metal oxide/ polymer solar cells using dyes and multiwalled carbon nanotubes, Proceedings of Solar Energy Materials, Solar Cells and Solar Energy Applications,Kandy, Sri Lanka, 4-6 January 2018.
  34. Uthayaraj, S.; Shivatharsiny, R.; Velauthapillai, D.; Ravirajan, P. Air-stable organic-inorganic metal halide perovskite material for solar cells, Proceedings of Solar Energy Materials, Solar Cells and Solar Energy Applications, Kandy, Sri Lanka,4-6 January 2018.
  35. A.; Thanihaichelvan. M.; Shivatharsiny. R, Velauthapillai, D.; Ravirajan. P. Multifunctional Novel Ruthenium Dye (RuC) for Nanocrystalline Titanium dioxide / Poly (3-hexylthiophene) hybrid Solar Cells, The 8thInternational Conference on Advanced Materials Research (ICAMR-2018), Japan, 2018.
  36. Uthayaraj, S.; Shivatharsiny, R.; Velauthapillai, D.; Ravirajan, P. Air-stable organic-inorganic metal halide perovskite material for solar cells. International Conference on Solar Energy Materials, Solar Cells and Solar Energy Applications (SOLAR ASIA – 2018),Kandy, Sri Lanka, January 4-6, 2018.
  37. Rajapakshe, R.B.S.D.;  Malikaramage, A.S.; Ravirajan, P.;  Velauthapillai, D.; Rajapakse, R.M.G. Synthesis and characterization of Niobium(V) and Silver(0)-doped visible light responsive titania nanorods. The 28thInternational Symposium on Transport Phenomena, Peradeniya, Sri Lanka. 22-24 September 2017.
  38. Thivakarasarma, T.; Pirashanthan, A.; Loheswaran, S.; Balashangar, K.; Prashanthan, K.; Thanihaichelvan, M.; Amalraj, P.A.;  Rasalingam, S.; Robertson, N.; Nelson, J.; Velauthapillai, D.;  Ravirajan, P. Role of interface modifiers on enhancing the performance of Hybrid Nanocrystalline Metal oxides / Polymer Solar cells. International Symposium on nanomaterials for clean energy and health applications, Coimbatore, India, 6-8 December 2017.