Doctorates' Information System

     Supravat Karak

Ph.D. fromIndian Institute of Technology, Kharagpur - Physics and Meteorology
Supervisor(s)  Dr. Achintya Dhar
Ph.D. status  Joined in 2007 :: Completed in 2011
Address990 North Pleasant Street, North Village, B-21, Amherst, MA, 01002, USA
Formal Education
Exam / Degree Board / UnivBranchYear
10West Bengal Board of Secondary Education (WBBSE)science, language2000
12West Bengal Council of Higher Secondary Education ( WBCHSE)Science2002
B.Sc.Midnapore College (Vidyasagar University)Physics2005
M.Sc.Indian Institute of Technology, KharagpurPhysics2007

Research Areas
  • Experimental Condensed Matter Physics
  • Low Cost efficient Organic Photovoltaics Devices
  • Optoelectronic and charge carrier transport properties of OPVs
  • Self Assembled Organic Nanostructure Bassed OPVs
  • single crystal organic devices

  • Fabrication and Electrical and Optical Characterisations of Organic Photovoltaic/Solar cell
  • Thin film deposition systems like thermal evaporation, spin coating, DC and RF sputtering
  • Electrical characterizations like current-voltage,capacitance-voltage, ac-impedance, resistivity
  • Optical characterizations like absorption and transmission measurements with spectrometer
  • Photoluminescence, electroluminescence, photoluminescence decay life time measurements
  • Photocurrent measurements of organic semiconductor devices for photovoltaic applications
  • Experience in structural and morphological characterizations of thin films using XRD,SEM,TEM and AFM
  • PVD growth of organic single crystal and graphene

  • Gold medal for fisrt class first (University topper) in B.Sc (2005)
  • JEST in Physics (2005)
  • National Scholarship in M.Sc (2007)
  • MCM Scholarship in M.Sc (2007)
  • GATE Fellowship in Physics (2007)
  • CSIR Junior Research Fellowship (2007)
  • CSIR Senior Research Fellowship (2009)
  • Energy Frontier Research Center (EFRC) post-doctoral fellowship, University of Massachusetts Amherst (2011)

  • (2007-2011) Works as a CSIR Research Fellow, IIT-Kharagpur
  • (2011-Till Date) Works as EFRC Post-doctoral Fellow, UMass

Teaching Experience
  • Optics, Mechanics, Quantum mechanics, Sound and Waves (Physics1)(T) at Indian Institute of Technology, Kharagpur 2009 (1 terms)
  • Condensed Matter Physics, Optics, Electronics, B.Tech 1st Year lab(P) at Indian Institute of Technology, Kharagpur 2007-2009 (4 terms)

Fellowships / Scholarships
  • National Scholarship
  • MCM Scholarship
  • GATE Fellowship
  • Energy Frontier Research Center (EFRC) post-doctoral fellowship, USA

Papers Published in Journals
  • Photovoltaic Effect at the Schottky Interface with Organic Single Crystal Rubrene by Supravat Karak, Jung Ah Lim, Sunzida Ferdous, Volodimyr V. Duzhko, Alejandro L. Briseno Advanced Functional Materials 24, 8,1039-1046 (2013)
  • Enhancing the performance of nanostructured zinc oxide/polymer-based hybrid solar cells using ammonia as a structural and interfacial modifier by S Pradhan, S Karak, A Dhar, Journal of Physics D Applied Physics 45, 235104 (2012)
  • The effects of different atmospheric conditions on device stability of organic small-molecule solar cells under constant illumination by S Karak, S Pradhan, A Dhar Semicond. Sci. Technol 26,095020 (2011)
  • Enhanced cell efficiency for small molecule organic solar cells by p-type and n-type dopings by S. Karak,A.Dhar Journal of Nano Energy and Power Research 1, 57-65 (2011)
  • Photoinduced charge transfer and photovoltaic energy conversion in self-assembled N,N-Dioctyl-3,4,9,10-perylene dicarboximide nanoribbons by S. Karak,S.K.Ray,A.Dhar Applied Physics Letters 97,043306 (2010)
  • Improvement of efficiency in solar cell based on vertically grown copper phthalocyanine nanorods by S. Karak,S.K.Ray,A.Dhar Journal of Physics D Applied Physics 43, 245101 (2010)
  • Improved photovoltaic properties of pentacene/N,N-Dioctyl-3,4,9, 10-perylenedicarboximide-based organic heterojunctions with thermal annealing by S. Karak,S.K.Ray,A.Dhar Solar EnergyMaterials and Solar Cells 94, 836-841 (2010)
  • Organic photovoltaic devices based on pentacene/N,N-dioctyl-3,4,9,10- perylenedicarboximide heterojunctions by S. Karak, V.S. Reddy, S.K. Ray, A. Dhar Organic Electronics (Lett. Sec.) 10, 1006-1010 (2009)
  • Photovoltaic properties of pentacene/6,6-phenyl C61 butyric acid methyl ester based bilayer hetero-junction solar cells by V S Reddy, S Karak, S K Ray and A Dhar Journal of Physics D 42, 145103 (2009)
  • Multilevel conductance switching in organic memory devices based on AlQ3 and Al/Al2O3 core-shell nanoparticles by V. S. Reddy, S. Karak, and A. Dhar Applied Physics Letters 94, 173304 (2009)
  • Carrier transport mechanism in aluminum nanoparticle embedded AlQ3 structures for organic bistable memory devices by V S Reddy, S Karak, S K Ray and A Dhar Organic Electronics 10, 138-144 (2009)

Papers Presented at Conferences
  • Organic Light Emitting Bistable Memory Devices Based on AlQ3 by V. S. Reddy, S. Karak, S.K. Ray, A. Dhar Proc. of Photonics 2008, Habitat World Convention Center, New Delhi, India p. 426 (2008)
  • Effect of pentacene crystalinity in photovoltaic energy conversion of PCBM based heterojunctions by S. Karak, V.S. Reddy, S.K. Ray and A. Dhar 18th International Photovoltaic Science and Engineering Conference and Exhibition (PVSEC 18) 19-23 Jan, 2009, Kolkata, India, 35 (2009)
  • Effect of annealing temperature on the photovoltaic properties of pentacene/PTCDI-C8 based organic heterojunctions by S. Karak, S.K. Ray and A. Dhar 15th International Workshop on The Physics of Semiconductor Devices (IWPSD-2009) 15-19 Dec, 2009, Delhi, India 265 (2009)
  • Organic Bistable Memory Devices Based on Donor-Acceptor Systems by V. Sivaji Reddy, D.V. Maheswar Repaka, S. Karak, S.K. Ray, A. Dhar International Conference on Hi-Tech Materials (ICHTM-09), IIT Kharagpur, India p. 176-177 (2009)
  • Improvement of light harness efficiency of P3HT/PTCDI-C8 nanoribbon based solar cell by sensitizing TiO2 nanoparticles by S.Karak,S.Pradhan,A.Dhar international symposium on ANM-2010,CGCRI,kolkata on 6-7 December XXX (2010)
  • N,N-Dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) nanoribbons harness efficient solar energy by S.Karak,S.Pradhan,S.K.Ray and A.Dhar ICFANT-2010, Jadavpur University,Kolkata on 9-11december XXX (2010)
  • Organic Solar Cell Based on Vertically Grown Copper Phthalocyanine Nanorods by S. Karak,S.K.Ray,A.Dhar PHOTONICS 2010, Indian Institute of Technology Guwahati, India,December 11-15 XXX (2010)
  • Organic Single-crystal Schottky Cells by S. Karak, J. A Lim, V. Duzhko and A. L. Briseno 2012 MRS Fall Meeting, November 25-30,2012, Boston, Massachusetts. XXX (2012)

Indian Institute of Technology, Kharagpur-721 302, INDIA
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