Dr.P.Dennis Christy, MSc, MPhil, Ph.D Assistant Professor (Dep. ID: PHY 54) Department of Physics (SHIFT- II) Loyola College (Autonomous) Chennai 600 034, Tamilnadu, India Email : dennischristy82@yahoo.co.in Tel : +91 7094828049 Professional qualification 2010 Ph. D., in Physics, Loyola College, University of Madras Thesis: Studies on the Mild Condition Preparation and Characterization of TiO 2 Nanocrystals and Coupled Semiconductor Nanocrystals of CdS@TiO 2 Supervisor: Dr.P.Sagayaraj, Dep. of Physics, Loyola College, Chennai 2005 M.Sc., in Physics, St.Joseph s College, Bharathidasan University 2003 B.Sc., in Physics, A.V.C College, Bharathidasan University Academic and Research positions 2016 onwards Position: Assistant professor Department of Physics, Loyola College, Chennai 2012 2016 Position: Post-Doctoral Researcher Research Center for Nano Devices and Advanced Materials Nagoya Institute of Technology, Nagoya, Japan 2010-2011 Position: Assistant Professor of Physics
GKM College of Eng. and Technology, Chennai, India Affiliation: Anna University, Chennai Professional activities # Membership in professional bodies # Reviewer Indian Physics Association Materials Research Society of India Indian Science Congress Association Journal of Applied Physics (AIP) Journal of Nanoscience and Nanotechnology (ASP) Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, (ELSEVIER) Research activities # Areas of Interest III-V thin-film transistors on low cost substrates Low cost ultra-thin layer II-VI semiconductors for future electronic devices Semiconductor physics # Expertise in handling semiconductor device processing & testing equipments: Optical and Electron beam Lithography equipments Dry etching tools Thin film deposition units (ALD,RF Sputtering, E-beam evaporator) Electron beam metal evaporator Spin coating and Wet etching techniques Hall measurement unit Optical and Atomic force microscope (AFM) Raman Scattering spectroscope DC and RF, C-V measurement units
Research achievements 2008-2010 Senior Research Fellow (SRF), Department of Science and Technology (DST), Gov. of India 2011 Sep Internal Travel Scheme (ITS) granted from DST for poster presentation at International Symposium on Advanced Complex Inorganic Nanomaterials held at University of Namur, Belgium # Papers published in National and International Conferences /Symposium/Workshops: 1. P.Dennis Christy, N.S. Nirmala Jothi, P.Sagayaraj, Structural and optical properties of TiO 2 for photovoltaic applications, National Conference on Advanced Functional Materials (15-16 FEB 2008), Department of Physics, SRM University, Chennai, India. 2. P.Dennis Christy, N.S. Nirmala Jothi, G. Ramalingam, A.R. Baby Suganthi, P.Sagayaraj, Investigation on low temperature growth and structural properties of highly crystalline titania nanoparticles, 13 th National Seminar on Crystal Growth (27-29 JAN 2009), SSN College of Engineering, Chennai, India. 3. P.Dennis Christy, P.Sagayaraj, Less agglomerated, size controlled TiO 2 nanoparticles precursor modification: A facile and efficient preparative method, International Symposium on Advanced Complex Inorganic Nanomaterials (11-14 SEP 2011), University of Namur, Belgium. 4. Arata Watanabe, Kentaro Mori, Ryuhei Oda, P.Dennis Christy, Takashi Egawa, Pits related to thermal stability of AlInN/GaN heterostructure, International Workshop on Nitride Semiconductors (IWN 2012) (14-19 OCT 2012), Sapporo, Japan. 5. Yoshiki Yano, Hiroki Tokunaga,Hayato Shimamura, Yuya Yamaoka,Akinori Ubukata, Toshiya Tabuchi, Koh Matsumoto,
P.Dennis Christy, Takashi Egawa, Uniform and High growth rate AlGaN/GaN and AlN on 8 inch Silicon substrates using 6x8 Inch Multiwafer MOCVD Tool, International conference of Solid State Sciences and Technology (ICSSST 2012), (18-20 DEC 2012), Holiday Inn, Malacca, Malaysia. 6. P.Dennis Christy, Takashi Egawa, Yoshiki Yano, Hiroki Tokunaga, Yuya Yamaoka,Akinori Ubukata, Toshiya Tabuchi, Hayato Shimamura, Koh Matsumoto, Fabrication of AlGaN/GaN HEMTs on 200 mm Si(111) Substrate, International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma 2013) (28 JAN-1 FEB 2013), Nagoya University, Japan. # Participation in Conferences/Symposium/Workshop/short course: 1. Annual Photonics workshop (26 28 FEB 2008), Cochin University of Science and Technology, Kochi, India. 2. 53 rd DAE Solid State Physics Symposium (16-20 DEC 2008), Bhabha Atomic Research Center, Mumbai, India 3. 4 th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (4-8 MAR 2012), Chubu University, Japan. 4. Short-term course on Modeling, Simulation and Characterization of Nano-Transistor (26-30 October 2016), IIT Kanpur, India. # Papers Published in International Journals: 1. Arata Watanabe, Joseph J. Freedsman, Yuya Urayama, P.Dennis Christy, and Takashi Egawa, Thermal stability of an InAlN/GaN heterostructure grown on silicon by metal-organic chemical vapor deposition, J. Appl. Phys 118, 235705, (2015). 2. P.Dennis Christy, Y. Katayama, A. Wakejima and Takashi Egawa, High f T and f MAX for 100 nm unpassivated rectangular gate AlGaN/GaN
HEMT on high resistive silicon (111) substrate, Electronics Letters Vol.51, (2015) 1366-1368. 3. P.Dennis Christy, Arata Watanabe and Takashi Egawa, Influence of strain induced by AlN nucleation layer on the electrical properties of AlGaN/GaN heterostructures on Si(111) substrate, AIP Advances 4, 107104, (2014). 4. P.Dennis Christy, Takashi Egawa, Yoshiki Yano, Hiroki Tokunaga, Hayato Shimamura, Yuya Yamaoka, Akinori Ubukata, Toshiya Tabuchi, and Koh Matsumoto, Uniform growth of AlGaN/GaN high electron mobility transistors on 200 mm Si(111) substrate, Applied Physics Express, Vol.6 (2013) 026501. 5. N.S.Nirmala Jothi, P.Dennis Christy, A.R.Baby Suganthi, G.Ramalingam and P.Sagayaraj, Development of CdS nanorods of high aspect ratio under hydrothermal conditions with PEG template, J. Crystal Growth, Vol.316, (2011) 126-13. 6. P.Dennis Christy, N.Melikechi, N.S.Nirmala Jothi, A.R.Baby Suganthi, P.Sagayaraj Synthesis of TiO 2 nanorods by oriented attachment using EDTA modifier: A novel approach towards 1D nanostructure development, J. Nanopart. Res. Vol.12 (2010) 2875-2882. 7. A.Muthuvinayagam, N.Melikechi, P.Dennis Christy, P.Sagayaraj, Investigation on mild condition preparation and quantum confinement effects in semiconductor nanocrystals of SnO 2 Physica B, Vol.405 (2010) 1067-1070. 8. P.Dennis Christy, N.S.Nirmala Jothi, N.Melikechi, P.Sagayaraj Synthesis, Structural and Optical properties of well dispersed anatase TiO 2 nanoparticles by non-hydrothermal method, Cryst. Res. Technol, Vol.44 (2009) 484-488. 9. G.Ramalingam, N.Melikechi, P.Dennis Christy, S.Selvakumar, P.Sagayaraj Structural and Optical property studies of CdSe crystalline
nanorods synthesized by a solvothermal method, J. Crystal Growth, Vol. 311 (2009) 3138-3142. 10.Joe G.M. Jesudurai, K.Prabha, P.Dennis Christy, J.Madhavan, P.Sagayaraj Synthesis, growth and characterization of new boratemixed crystals of type (NH 4 ) 1-x K x B 5 O 8, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 71 (2008) 1371-1378. # Google Scholar Citations: Citations indices: Since 2012 Citations 161 h-index 7 i10-index 6 Personal Information First name : Dennis Christy Surname : Peter Raj Born : 24-03-1982 Religion : Roman Catholic Citizen : India Gender : Male Marital Status : Married Address for correspondence : 41/66 Bajanai Koil Street, Choolaimedu, Chennai 600 094 Permanent Address : 63/29 Ganapathy Nagar, Mayiladuthurai, Nagapattinam Dist., Tamilnadu, India