Journal Articles

1. Roopali Shekhawat, Vinod Erkkara Madhavan, K. Ramesh, Improved thermal stability and direct hexagonal transition accompanied by metal insulator transition in arsenic substituted Ge₂Sb₂Te₅, Journal of Alloys and Compounds 910 (2022) 164897, https://doi.org/10.1016/j.jallcom.2022.164897(IF 5.316), ISSN: 0925-8388

2. Roopali Shekhawat, Haritha Pamuluri, Vinod Erkkara Madhavan (Corresponding author), K. Ramesh, Structural Transformation and Phase Change Properties of Se Substituted GeTe, Scientific Reports, 11 (2021) 7604, https://doi.org/10.1038/S41598-021-87206-X(IF 4.380), ISSN: 2045-2322

3. Vinod E. Madhavan, Iwan Zimmermann, Ahmer A. B. Baloch, AfsalManekkathodi, AbdelhakBelaidi, NouarTabet, Mohammad Khaja Nazeeruddin, “CuSCN as Hole Transport Material with 3D/2D Perovskite Solar Cells, ACS Applied Energy Materials,3(2020) 114-121, https://doi.org/10.1021/acsaem.9b01692(IF 6.024), ISSN: 2574-0962

4. AfsalManekkathodi, Vinod. E Madhavan, AbdelhakBelaidi, Sahel Ashhab, Edward Sargent et al, “Solution-processed Perovskite-Colloidal Quantum Dot Tandem Solar Cells for Photon Collection Beyond 1000 nm”, Journal of Materials Chemistry A, 7, (2019) 26020, https://doi.org/10.1039/C9TA11462A(IF 14.511), ISSN: 2050-7488

5. Vinod E. Madhavan, Ali Kachmar, Marcelo Carignano and Sangunni K. S., “Crystallization properties of arsenic doped Ge₂Sb₂Te₅ alloys”, Scientific reports, 9 (2019) 12985, https://doi.org/10.1038/s41598-019-49168-z (IF 4.380), ISSN: 2045-2322

6. Ravi P. Pandey, Kashif Rasool, Vinod E. Madhavan, BrahimAissa, YuryGogotsi, Khaled A. Mahmoud, “Ultrahigh-flux and fouling-resistant nanofiltration membrane based on MXene(Ti₃C₂T_x)/silver nanoparticles”, Journal of Materials Chemistry A, 6, (2018), 3522-3533 (DOI: 10.1039/C7TA10888E) (IF 14.511), ISSN: 2050-7488

7. Vinod E. Madhavan, Xianzhong Lin,JaisonKavalakkatt, Volker Hinrichs,Iver Lauermann, Martha Ch. Lux-Steiner, Ahmed Ennaouiand Reiner Klenk, ”Inkjet-printed CZTSSe absorbers and influence of sodium on device performance”,Solar Energy Materials and Solar Cells, 180 (2018), 373-380 (DOI:https://doi.org/10.1016/j.solmat.2017.09.003), (IF 7.305), ISSN: 0927-0248

8. ChinnaiyahSripan, Vinod E. Madhavan, Annamraju Kasi Viswanath and R. Ganesan, “Influence of annealing temperature on the properties of non-stoichiometric Cu_1.66Zn_1.25GeSe₄ thin films”, Surfaces and Interfaces, 7 (2017) 134-138. DOI:10.1016/j.surfin.2017.03.009(IF:6.137), ISSN: 2468-0230

9. ChinnaiyahSripan, Vinod E. Madhavan, Annamraju Kasi Viswanath, R. Ganesan, “Sulfurization and annealing effects on thermally evaporated CZTS films”, Materials Letters, 189, (2017)110, DOI:10.1016/j.matlet.2016.11.094(IF 3.574), ISSN: 0167-577X

10. Vinod E. Madhavan, Iwan Zimmermann, Cristina Roldán-Carmona, Giulia Grancini, Marie Buffiere, AbdelhakBelaidi and Mohammad Khaja Nazeeruddin, “Copper Thiocyanate Inorganic Hole-Transporting Material for High-Efficiency Perovskite Solar Cells”, ACS Energy Letters, 1, (2016), 1112, https://doi.org/10.1021/acsenergylett.6b00501(among the most read articles in the journal for November and December 2016) (IF:23.101), ISSN: 2380-8195

11. ChinnaiyahSripan, R Ganesan, E. M. Vinod and Annamraju Kasi Viswanath, “The effect of sulfur on the phase formation of Cu₂ZnSnS₄ solar cell material”, Materials Letters, 180, (2016),  295, DOI:10.1016/j.matlet.2016.05.027(IF 3.574), ISSN: 0167-577X

12. BrahimAïssa, Rima J. Isaifan, Vinod E. Madhavan and Amir A. Abdallah, “Structural and physical properties of the dust particles in Qatar and their influence on the PV panel performance”, Scientific reports, 6, (2016) 31467, DOI:10.1038/srep31467 (IF 4.380), ISSN: 2045-2322

13. Vinod E. M., K. Ramesh, R. Ganesan and K. S. Sangunni, “Direct hexagonal transition of amorphous (Ge₂Sb₂Te₅)_0.9Se_0.1 thin films”, Applied Physics Letters, 104 (2014) 063505, DOI:10.1063/1.4865198(IF 3.971), ISSN: 0003-6951

14. Vinod E. M. and K. S.  Sangunni, “The Effect of Se Doping on Spectroscopic and Electrical properties of GeTe”, Thin Solid films, 550 (2013) 569, DOI:10.1016/j.tsf.2013.11.038(IF 2.358), ISSN: 0040-6090

15. R. R. Kumar,A. R. Barik, Vinod E. M., MukundBapna, K. S. Sangunni and K.V. Adarsh, “Crossover from Photo darkening to Photo bleaching in a-Ge_xSe_100-x thin films”, Optics Letters, 38 (2013) 1682, DOI:10.1364/OL.38.001682(IF 3.776), ISSN: 0146-9592

16. P. Khan, A. R. Barik, Vinod E. M., K. S. Sangunni, H. Jain, and K. V. Adarsh, “Coexistence of fast photodarkening and slow photobleaching in Ge₁₉As₂₁Se₆₀ thin films”, Optics Express, 20 (2012) 12416, DOI:10.1364/OE.20.012416(IF 3.894), ISSN: 1094-4087

17. R. Naik, Arpitha Jain, Vinod E. M., R. Ganesan,  K. S. Sangunni, “Photo induced changes in the optical properties of thermally evaporated As₄₀Se₅₀Sb₁₀ films”, Phys. Status Solidi C, 8 (2011) 2785, https://doi.org/10.1002/pssc.201084130 (IF 2.170), ISSN: 1862-6300

18. Vinod E. M., RamakantaNaik, A. P. A. Faiyas, R. Ganesan, K.S. Sangunni, “Temperature dependent optical constants of amorphous Ge₂Sb₂Te₅ thin films”, Journal of Non-Crystalline Solids, 356 (2010) 2172, DOI:10.1016/j.jnoncrysol.2010.07.039(IF 4.458)

19. A. P. A. Faiyas, Vinod E. M., J. Joseph, R. Ganesan, R. K. Pandey, “Dependence of pH and surfactant effect in the synthesis of magnetite (Fe₃O₄) nanoparticles and its properties”, Journal of Magnetism and Magnetic Materials, 322 (2010) 400, DOI:10.1016/j.jmmm.2009.09.064(IF 3.097), ISSN: 0304-8853

20. D. P. Mondal, Vinod E. M., S. Das, T. S. V. C. Rao, “High stress abrasive wear behavior of shot peened AA2014 Al-alloy”, Indian Journal of Engineering & Materials Sciences, 15 (2008) 41,URL: http://ampri.csircentral.net/610/, (IF 0.881), ISSN: 0971-4588

​​​​​​​Conference presentations

1. Roopali Shekhawat, Vinod Erkkara Madhavan, K. S. Sangunni, K. Ramesh, Phase change properties of Arsenic substituted Ge2Sb2Te5 thin films, European Phase-Change and Ovonic Symposium (EPCOS 2021), Online conference 13-15 September 2021 organized by University of Oxford(Poster Presentation)

2. Roopali Shekhawat, Vinod Erkkara Madhavan, K. Ramesh, Effect of Se substitution on the phase change properties of GeTe, International Virtual Conference on “Frontiers in Materials for Technological Applications” from August 4th to 6th, 2021organized by CSIR-IMMT, Bhubaneswar(Poster Presentation)

3. AfsalManekkathodi, Bin Chen , Junghwan Kim, Se-WoongBaek, Benjamin Scheffel, Yi Hou, Olivier Ouellette, MakhsudSaidaminov, Oleksandr Voznyy, Vinod Madhavan, AbdelhakBelaidi, Sahel Ashhab, Edward Sargent, Solution-processed Perovskite-colloidal Quantum Dot Tandem Solar Cells for Photon Collection Beyond 1000 nm, Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP20), Tsukuba-shi, Japan, 2020 January 20th - 22nd, (Oral presentation by Sahel Ashhab)

4. Md. Anower Hossain, Sergey Rashkeev, Vinod Madhavan, Tian Zhang, Chang-Yeh Lee, Bram Hoex, NouarTabet, and Amir Abdallah, “Transition metal oxides as passivated hole-contacts layer for silicon wafer PERC solar cells: Intrinsic and extrinsic defects in MoO3 from first-principles calculations”, 35th EU-PVSEC 2018, 24 - 28 September 2018, Brussels, Belgium (Oral Presentation)

5. Vinod E. Madhavan, Ahmer Ali Bozdar Baloch, AfsalManekkathodi, DhanasekaranThirunvukka, I. Zimmermann, C. Roldán-Carmona, G. Grancini, M. Buffiere, Mohammad Khaja Nazeeruddin, A. Belaidi and NouarTabet,“CuSCN and CuI as Hole Transport Materialsfor Perovskite Solar Cells”, Qatar Foundation ARC 2018, Qatar National Convention Center (QNCC), 20 – 21 March, 2018, Doha, Qatar (Poster presentation)DOI: 10.5339/qfarc.2018.EEPD720

6. Vinod E. Madhavan, Iwan Zimmermann, Cristina Roldan-Carmona, Giulia Grancini, Marie Buffiere, AbdelhakBelaidi, Mohammad Khaja Nazeeruddin, “Cu Based Hole Transport Materials for Perovskite Solar Cells”, EU PVSEC 2017 (33rd European Photovoltaic Solar Energy Conference and Exhibition), Sept. 25-29, 2017, Amsterdam, Netherlands (Poster presentation)

7. Vinod E. Madhavan, Iwan Zimmermann, Cristina Roldan-Carmona, Giulia Grancini, Marie Buffiere, AbdelhakBelaidi, Mohammad Khaja Nazeeruddin, “Copper Thiocyanate Inorganic Hole-Transporting Material for High-Efficiency Perovskite Solar Cells”, QEERI – EPFL Workshop, Feb. 12-13, 2017, HBKU Research Complex Building, Doha, Qatar (Oral presentation)

8.  Ahmed Ennaoui, Xianzhong Lin, Jaison Kavalakkatt, VinodE. M., Martha Ch. Lux-Steiner, “Challenges for the development of inkjet printed Cu2(Zn,Sn)(S,Se)4 thin film solar cell”, International Solar Energy Society, Solar World Congress (SWC-2015), Daegu, South Korea (Oral presentation)

9.  K. Ramesh, VinodE. M., Pumalianmunga, Sharona Thomas Horta, R. Venkatesh, E.S.R.Gopal, “Phase Change Properties of Chalcogenide Glasses - Some Interesting Observations”, ICG Annual Meeting Bangkok-2015(Oral presentation).

10. X. Z. Lin, A. Ennaoui, J. Kavalakkatt, VinodE. M., V. Hinrichs, I. Lauermann, R. Klenk and M. Ch. Lux-Steiner, “On the role of sodium in the morphology and device properties of inkjet-printed Cu2ZnSn(S,Se)4 absorbers”, European PV solar energy conference (EU PVSEC)- 2015, Hamburg, Germany(Oral presentation).

11.  Mohammad I. Hossain, VinodE. M., AbdelhakBelaidi, Fahhad Alharbi, NouarTabet, “Preparation of Hole Transport Material Free Perovskite Solar Cells”, 6th Annual Symposium on Material Sciences and Engineering-2015, Texas A&M University at Qatar (TAMUQ), Doha, Qatar (Poster presentation)

12. VinodE. M.et al.,“Memory Switching Properties of Selenium Doped Ge2Sb2Te5 thin films”, 17th International Symposium on Non-Oxide and New Optical Glasses (ISNOG 2014), Jeju, South Korea.(Oral presentation)

13. VinodE. M.et al.,“Direct hexagonal transition of amorphous (Ge2Sb2Te5)0.9Se0.1 thin films”, International Union of Materials Research Society- International Conference in Asia 2013 (IUMRS-ICA 2013), Bangalore, India.(Poster presentation)

14. VinodE. M.et al.,“Spectroscopic investigations on (GeTe)1-xSex thin films”, 18th International Symposium on Non-Oxide and New Optical Glasses(ISNOG)-2012, Saint-Malo, France.(Oral presentation)

15. VinodE. M.et al., “A compositional dependent study on (GeTe)1-xSexchalcogenide alloys”, In-house symposium-2011, Department of Physics, Indian Institute of Science, Bangalore, India.(Poster presentation)

16. VinodE. M.et al., “Studies on Ge2Sb2Te5 films at structural transitions”, 4th International Conference on Optical Optoelectronic and Photonic Materials and Applications (ICOOPMA)-2010, Budapest, Hungary.(Poster presentation)

17. VinodE. M.et al., “Temperature dependent optical constants of amorphous Ge2Sb2Te5 thin films”, 17th International Symposium on Non-Oxide and New Optical Glasses (ISNOG)-2010, Ningbo, China.(Poster presentation)

18. VinodE. M.et al., “Structural and optical studies on Ge2Sb2Te5 thin films”, School on Glass formers and Glasses-2010, JNCSR, Bangalore, India.(Poster presentation)

19. VinodE. M.et al., “Optical illumination studies on Ge2Sb2Te5 thin film grown by thermal evaporation”, Frontiers in condensed matter Physics, Centenary Conference- 2009, Department of Physics, Indian Institute of Science, Bangalore, India.(Poster presentation)

20. VinodE. M.et al., “Properties of lithium cobalt oxide prepared by RF magnetron sputtering and sol-gel spin coating”, DAE solid state Physics symposium-2007, Mysore University,  Bangalore, India(Poster presentation)

21. VinodE. M.et al.,“Characterizations of Cenosphere-Aluminum (2014) syntactic foam”, IUMRS-ICAM-2007, Bangalore, India.(Oral presentation)

22.  D P Mondal, VinodE. M.et al., “Effect of shot-peening on high stress abrasive wear of Aluminum alloys”, International conference on Industrial tribology-2006, Indian Institute of Science, Bangalore, India(Oral presentation)

23.  Roopali Shekhawat, Vinod Erkkara Madhavan, K. S. Sangunni, K. Ramesh, Phase change properties of Arsenic substituted Ge2Sb2Te5 thin films, European Phase-Change and Ovonic Symposium (EPCOS 2021), Online conference 13-15 September 2021 organized by University of Oxford(Poster Presentation)

​​​​​​​Conference Proceedings

1. AfsalManekkathodi, Bin Chen , Junghwan Kim, Se-WoongBaek, Benjamin Scheffel, Yi Hou, Olivier Ouellette, MakhsudSaidaminov, Oleksandr Voznyy, Vinod Madhavan, AbdelhakBelaidi, Sahel Ashhab, Edward Sargent, Solution-processed Perovskite-colloidal Quantum Dot Tandem Solar Cells for Photon Collection Beyond 1000 nm, Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP20), Tsukuba-shi, Japan, 20 – 22 January, 2020, DOI: https://doi.org/10.29363/nanoge.iperop.2020.093

2. Md. Anower Hossain, Sergey Rashkeev, Vinod Madhavan, Tian Zhang, Chang-Yeh Lee, Bram Hoex, NouarTabet, and Amir Abdallah, “Transition metal oxides as passivated hole-contacts layer for silicon wafer PERC solar cells: Intrinsic and extrinsic defects in MoO3 from first-principles calculations”, 35th EU-PVSEC 2018, conference paper: DOI: 10.4229/35THEUPVSEC20182018-1AO.1.6

3. Ahmed Ennaoui, Xianzhong Lin, Jaison Kavalakkatt, Vinod E. M., Reiner Klenk and Martha Ch. Lux-Steiner, “Challenges for the development of inkjet printed Cu2(Zn,Sn)(S,Se)4 thin film solar cell”, Conference Proceedings, Solar World Congress 2015, Daegu, South Korea, (2015) DOI:10.18086/swc.2015.05.08

4. Vinod E. M., K. Ramesh and K. S. Sangunni, “Structural transition and enhanced phase transition properties of Se doped Ge2Sb2Te5 alloys”, Scientific Reports, 5 (2015) 8050, DOI:10.1038/srep08050 (IF 4.380), ISSN: 2045-2322

5. Ramakanta Naik, Vinod E. M., SanjitParida, R. Ganesan and K. S. Sangunni, “Photo induced effects on the optical properties of As20Sb20S60 thin films”, IOP Conference Series: Materials Science and Engineering 73 (2015) 012045, DOI:10.1088/1757-899X/73/1/012045, (IS:0.48) ISSN: 1757-8981

6. Pritam Khan, A. R. Barik, Vinod E. M., K. S. Sangunni and K. V. Adarsh, “Observation of photobleaching and intensity dependent kinetics in Ge22As22Se56 thin films under sub-bandgap light illumination”, IOP Conference Series: Materials Science and Engineering 73 (2015) 012073, DOI:10.1088/1757-899X/73/1/012073, (IS:0.48) ISSN: 1757-8981

7. R. Naik, Vinod E. M., C. Kumar, R. Ganesan, and K. S. Sangunni, “Photo induced effects in Bi/As2Se3 bilayer thin films”, AIP Conference Proceedings, 1512 (2013) 534, DOI:10.1063/1.4791147(IF:0.402)

8. R. Naik, Vinod E. M., C. Kumar, and R. Ganesan, “Optical properties change of Ge12.5Sb25Se62.5 thin films by laser irradiation”, AIP Conference Proceedings, 1512 (2013) 622, DOI:10.1063/1.4791191

9. Vinod E. M., A. K. Singh, R. Ganesan, and K. S. Sangunni, “Effect of selenium addition on the GeTe phase change memory alloys”, Journal of Alloys and Compounds, 537 (2012) 127, DOI:10.1016/j.jallcom.2012.05.064(IF 6.371), ISSN: 0925-8388

10. RamakantaNaik, S. K. Parida, Vinod E. M., R. Ganesan, and K. S. Sangunni, “Light Induced Optical Properties Change in Sb20S40Se40 Thin Films”, AIP Conference Proceedings, 1461 (2012) 358, DOI:10.1063/1.4736921(IF:0.402)

1. Best poster presentation award, IUMRS-ICA (2013), Bangalore, India.

2. Senior Research Fellowship(2008 – 2013), Ministry of Human Resource Development, India

3. UGC Meritorious Fellowship (2009 – 2013), University Grants Commission, India

4. Best poster presentation award, ICOOPMA (2010), Budapest, Hungary.

• Emerging PV Technologies

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https://vinodem.wixsite.com/solgroup

Panel member on Solar PV in REVA Research Conclave at the School of Applied Sciences (Physics), 09October 2020 at REVA University, Rukmini Knowledge Park, Kattigenahalli, Yelahanka, Bengaluru, India.

WORKSHOP ON DEVICE FABRICATION:  Conducted WORKSHOP ON FABRICATION OF PEROVSKITE SOLAR CELLS in QEERI during 10 June 2019 to 17 June 2019 to scientists and other researchers.

WORKSHOP ON DEVICE FABRICATION: Conducted a WORKSHOP ON DEVICE FABRICATION OF PEROVSKITE SOLAR CELLS in QEERI for the NPRP project members during 05 February 2020 to 12 February 2020.

Perovskite based stable solar cells, International Conference on Advanced Materials, ICAM-2019, 12-14 June2019 atNirmalagiri College, Kerala, India