Physics

Head of Department

Dr. Tribedi Bora
Ph.D(IIT Guwahati)

E-mail:
hod.ph@nitm.ac.in

Faculty

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Dr. K. Senthilkumar Associate Professor

Ph.D , Shimane University, Japan

akskumar@nitm.ac.in
9402102371
https://nitmeghalaya.irins.org/profile/101619

Research Interest

1. Ion Implantation, 2. Near- and Mid-IR photodetectors, 3. Energy Materials and Devices

Education Qualification

Ph.D , Shimane University, Japan

Work Experience

  • Postdoctoral Researcher: Shimane University, Japan: April 2011-March 2012
  • Postdoctoral Researcher: Nagoya Institute of Technology, Japan: April 2012-Oct 2012
  • Assistant Professor, CMSE, NIT Hamirpur: Sep 2012-July 2015

Administrative Work

  • HoD Physics - 4.5 Years
  • Chairman Exam Cell - 2 Years
  • CCMN Admission Chairman - 2 Years

Projects


S.NoTitle
Funding Agency
Amount
Status
1Photocurrent performance of ion implanted Iron Pyrite (FeS2) thin film as hole transport layer for the CZTS based solar cell
IUAC [Inter University Accelerator Centre]10.8 LCompleted
2Defect induced electron-phonon interaction in ZnO nanoparticles
UGC-DAE Consortium for Scientific Research
1.7 LCompleted
3Fabrication of 2D Materials for Energy Harvesting Devices (Project coordinator)
DST-FIST160 LOngoing


Patent

RN Chakraborty, DS Mahanta, K. SenthilkumarSingle-step deposition of phase-pure iron pyrite and iron marcasite thin film by sputtering, Indian Patent Grant No: 572969 Dated on 30/11/2025


Publications

28.  RN Chakraborty, DS Mahanta, KD Devi, K. Senthilkumar, Negative  Ion Implantation Enabled Controlled Oxygen Doping in Iron Pyrite Thin Films, Small Methods, accepted on 23rd January 2026, DOI:10.1002/smtd.202501185.

27.  RN Chakraborty, DS Mahanta, K. Senthilkumar, Correlation Between Microstructural Changes and Phonon Shifts in O--Implanted FeS2 Thin Films, Appl. Phys. Lett ., 127, 262102, 2025.

26.  RN Chakraborty, DS Mahanta, K. Senthilkumar, Machine Learning-Driven Optimization of CuAl1–xFexS2-Based Solar

        Cells with Oxygen-Implanted FeS2 Thin Film as Hole Transport Layer, ACS Appl. Energy. Mater, 8 (22), 17054, 2025.

25.  DS Mahanta, RN Chakraborty, SDivagar, R Thangavel, K. SenthilkumarInterplay of Polymorphism in FeS2 Thin Films by Phosphorus Doping, ACS Appl. Energy. Mater 8 (18),13519-13528, 2025

24.  S Mazumder, MA Pathan, DSMahanta, K. SenthilkumarIntegrated Design for High-Efficiency Copper Zinc Tin Sulfide Solar Cells: Harnessing Mg-Alloyed Buffer and Advanced Interface Engineering, Langmuir 41 (32), 21402-21414, 2025

23.  RN Chakraborty, DS Mahanta, and K. Senthilkumar, Investigation of FeS2 Thin Film as a Hole Transport Layer in CuAl1– xFexS2- Based Solar Cells: A Strategy to Improve Efficiency, ACS Appl. Energy. Mater 8 (7), 4272-4280, 2025

22. S.Mazumder, S. Borgohain, and K. SenthilkumarSimulation Study for Nb-Doped MoS Layer in CZTS-Based Solar Cells: Assessment of Challenges, Adv. Theory Simul. 7, 2400396,  2024

21.  R. N. Chakraborty, D. S.Mahanta, S. Mazumder and K.Senthilkumar, Ion implantation induced p-type conductivity in      FeS thin film,  Phys.Scr. 99 (2024) 055953.

20.  E. Ahmed and K. Senthilkumar, A First Principle +U Correction to the Investigation of Intrinsic Vacancy and Zinc Vacancy-Cluster Induced Magnetism in w-ZnO, Phys. Scr. 98 (2023) 125986.

19.  S. Mazumder, P. Mazumder, and K. Senthilkumar, Device modelling and study of AZO/i-ZnO/ZnS/CZTS-bilayer solar cell for different series and shunt resistances, Solar Energy, 245 (2022) 46.

18.   S. Mazumder and K. Senthilkumar, Device study and optimization of CZTS/ZnS based solar cell with CuI hole transport layer for different conduction band offset, Solar Energy, 237 (2022), 414.

 17.  E. Ahmed and K. Senthilkumar, First-Principle Investigation of Defect Associated LVM and Structural Parameter Dependency in Response to the Ground State On-Site Hubbard Correction of w-ZnO, Journal Raman Spectroscopy, 53 (2022) 1166.

16. E. Ahmed, Santu Mazumder, and K. Senthilkumar, Unintentional Hydrogen Doped Impurity Induced Complex Paramagnetic Centers in ZnO Nanoparticles, Solid State Communications, 339 (2021) 114501.

15.  E. Ahmed and K.Senthilkumar, VZn–Hcomplex defect induced ferromagnetic behavior of unintentional hydrogen doped ZnO nanoparticles, Materials Science in Semiconductor Processing, 123 (2021) 105593.

14.  K. Senthilkumar, T.Yoshida, Y. Fujita., Formation of D–VZn complex defects and possible p-type conductivity of ZnO nanoparticle via hydrogen adsorption, J Mater Sci, 53(17),11977, 2018

13.  K.Senthilkumar, M. Subramanian, H. Ebisu, M.Tanemura and Y. Fujita., Trapping and Recombination Properties of the Acceptor like VZn-H Complex Defect in ZnO, J. Phys. Chem. C, Vol.-117, Issue No.-8, Page Nos -4299,2013.

12.  M. Subramanian, K.Senthilkumar, M.Tanemura,T.Soga, and T. Hihara, Raman spectra and magnetic property analysis of Nd dopedZnO thin film,Jpn. J. Appl. phys., Vol.-52, Page Nos -01AC14, 2012.

11.  K.Senthilkumar, O. Senthilkumar, S. Morito,T. Ohba, and Y. Fujita, Synthesis of zinc oxide nanoparticles by dc arc dusty plasma, J. Nanopart. Res.,Vol.-14, Page Nos -1205, 2012.

10.  B.E.Urban, P. Neogi, K.Senthilkumar, S.Rajpurohit, P.Jagadishwaran, S. Kim, Y.Fujita and A. Neogi, Bioimaging using the optimized nonlinear optical properties of ZnO, IEEEJ. Sel. Topics Quantum Electron.,18, 4, 1451, 2012.

09.  Ben E. Urban, Jie Lin, Os Kumar, K.Senthilkumar,Y. Fujita, and A. Neogi, Optimization of nonlinear optical properties of ZnO micro and nanocrystals for biophotonics, Optical Materials Express., Vol.-658,Page Nos -1, 2011.

08.  K.Senthilkumar, M.Tokunaga, H. Okamoto, O. Senthilkumar, and Y. Fujita, Hydrogen-related defect complexes in ZnO nanoparticles, Appl. Phys. Lett ., Vol.-97, Page Nos-091907, 2010.

07.  K.Senthilkumar, M.Tokunaga, H.Okamoto, O.Senthilkumar, J.Lin, B.Urban, A. Neogi,and Y. Fujita, Multi-phonon scattering and non-radiative decay in ZnOnanoparticles, Phys. StatusSolidi C., Vol.-7, Page Nos-1586, 2010.

06.  K. Senthilkumar, O. Senthilkumar, K.Yamauchi, M. Sato, S. Morito, T. Ohba, M.Nakamura, and Y. Fujita, Preparation of ZnO nanoparticles for bio-imagingapplications, Phys. Status Solidi B.,Vol.-246, Page Nos-885, 2009.

05.  K. Senthilkumar, H.Okamoto, M.Tokunaga, O.Senthilkumar, and Y.Fujita, Deposition of Nanoparticle-Aggregated ZnO Thin Films by Drop Coating Method, Jpn. J.Appl. Phys., Vol.-48, Page Nos -6FF05, 2009.

04. N.Nishimoto,T.Yamamae,T.Kaku, Y.Matsuo, K.Senthilkumar,O.Senthilkumar, J. Okamoto, Y. Yamada, S. Kubo, and Y. Fujita, Growth ofGa-doped ZnO by MOVPE using diisopropylzinc and tertiary butanol, J.Cryst. Growth., Vol.-310, 5003, 2008.

03.  N.Nishimoto,T.Yamamae, O.Senthilkumar, K.Senthilkumar,and Y.Fujita, Growth of ZnO thin films by MOCVD with high speed rotating disk reactor, J.Korean Phys. Soc.,Vol.-53, Page Nos -2951, 2008.

02.  O.Senthilkumar,K.Yamauchi, K.Senthilkumar, T.Yamamae, N.Nishimoto, and Y.Fujita, UV-Blue Light Emission from ZnO Nanoparticles, J.Korean Phys.Soc., Vol.-53, PageNos-46, 2008.

01.  K.Senthilkumar and R.Dhanasekaran, Two-Dimensional Cylindrical Model for the Chemical Vapor Transport of II-VI Compounds, Cryst.Growth Des., Vol.-8, Page Nos -671, 2008.

 

PhD Guidance


S.NoScholar NameRoll NoThesis TitleStatus
1Eliyash AhmedP18PH002Combined Theoretical and Experimental Scrutiny of Vacancy Disorder Dynamics in w- Zinc OxideCompleted on Feb 2023
2Santu MazumderP19PH009Exploring the Impact of Layer Structures and Materials Properties on the Efficiency of CZTS Based Solar Cell

Completed on July 2025

3DS MahantaP22PH007Electrical Conductivity and Band Gap Modulation of FeS2 Thin Film for Photovoltaic ApplicationOngoing
4RN ChakrabortyP23PH001Photocurrent performance of ion-implanted Iron Pyrite (FeS2) thin film as hole transport layer for the CZTS-based solar cellOngoing
5Bawan Pyntngenlang ThangkhiewP23PH004c-BN/Diamond Heterojuctions based HEMT for High Frequency ApplicationOngoing
6Joyshree HandiqueP25PH002---------------------------------------------------------------------------

Ongoing

Book Chapters Contribution

Quantum Mechanics: concepts and applications: The following 

two chapters contributed

Chapter Title
Name of Author(s)
Publisher
ISBN No.
Year of Publication
Scattering
N. Zettili
Wiley
978-93-5464-077-3
2022
Many Electron System
N. Zettili
Wiley
978-93-5464-077-3
2022


Courses Taught

  • PH 101: Physics
  • PH 503: Condensed Matter Physics
  • PH 505: Nuclear and Particle Physics
  • PH 402/PH 404: Mathematical Physics
  • PH 401/PH 403: Quantum Mechanics
  • PH 552: Quantum Information and Computation
  • PH531: Nanoelectronics

Video Lecture: 5 Theory of Angular Momentum: https://nitm.ac.in/CTEL/#ph

Professional Membership

Energy Science Society of India: 1103201624: Life Member

International Solar Energy Society: Life Member