The CENTRE FOR ORGANIC SPINTRONICS AND OPTOELECTRONICS DEVICES (COSOD) is an interdisciplinary research platform by Faculty of Science and Technology, Kazi Nazrul University Asansol. In this Centre, thrust has been given for integration of research activities through interdisciplinary knowledge, training etc., which might prepare a workforce undertaking scientific challenges in innovative ways.
Field of Spintronics and Photonics, nowadays, has become a matter of intense research interest, collectively or independently, owing to the severe need of sophisticated and effective information processing. In this direction, the major thrust area of research is the development of Novel Spin-Controlled Organic Optoelectronic devices. There are several advantages of organic semiconductor over inorganic semiconductor : (a) light weight; (b) low cost; (c) mechanical flexibility and deposition over large substrate; (d) ease of production and chemical modification; (e) chemically interactive bottom-up fabricated electronics, (f) Organic based devices are more Energy Efficient and Eco friendly. Such devices can be easily integrated into various systems, such as flexible, wearable or portable electronics.
As a new and emerging University, Kazi Nazrul University has the potential of becoming a site of advanced research in this domain of sciences and Technology; and the proposed initiative is a step in that direction. We aim to set-up Foreign and National Collaboration in the proposed direction of research for effective Technology Transfer. We also aim to bring the Engineering Faculty in the contour of this Centre.

Objectives :

  • To set up an Inter-disciplinary Research Collective.
  • Design and Fabrication of Organic Semiconductor based Spintronics Devices, which includes :
    • Giant Magnetoresistance (GMR) Read Head of Hard Disk Drive for Computer.
    • Magnetic Tunnel Junction for Magnetic Random Access Memory (MRAM) Applications.
  • Design and Fabrication of Organic Semiconductor based Optoelectronics Devices, which includes :
    • Organic Photodetector.
  • Design and Fabrication of high-performance Magnetic Organic Photodetector, combining both the photodetector and spin valve characteristics in a single device, which might lead to the creation of new Spin-based Optoelectronic Devices.
  • Simulation of Organic based Spintronics and Optoelectronics Devices.
  • Design and Analysis of Optical Logic based Information processing Circuits.
    • Binary Logic Systems
    • Multi-valued Logic Systems
    • Reversible Logic Systems
  • Design of and Fabrication of Solar Cell.
  • Development of Graphene-based Spintronics and Optoelectronics Devices for Tera Hertz Application.
  • To develop a new branch, namely Organic Opto-Spintronics Devices.  
  • To build global networks with a view to connect with latest advancement and research in these fields.
  • To materialize intersections between the Science, Engineering and the Industry.

Prof. J. N. Roy
Department of Physics, KNU Asansol
Email :,

Dr. Puja Dey
Associate Professor
Department of Physics, KNU Asansol
Email :,

1. Prof. Santanu Kumar Ghosh (Prof., Dept. of Mathematics, KNU).
2. Dr. Rajat Saha (Asst. Prof., Department of Chemistry, KNU).
3. Dr. Kousik Mukherjee (Asst. Prof., Physics, B.B. College, Asansol).
4. Dr. Ujjal Kanti Roy (Associate Prof., Dept. of Chemistry, KNU).
5. Dr. Arindam Biswas (Associate Prof., Dept. of Mining Engg., KNU).

Advisory Committee :

1. Dean, Science and Technology, Kazi Nazrul University, Asansol (ex-officio)

2. External experts

    I. Prof. Sourangshu Mukhopadhyay (Physics)
         Professor, Department of Physics 
         The University of Burdwan, India
   II. Prof. Subenoy Chakraborty (Mathematics)
          Professor ,Department of Mathematics
          Jadavpur University, India

   III. Prof. Amlan Chakrabarti (Engineering)
        Professor and Director
        A. K. Choudhury School of Information Technology,
        University of Calcutta. 
  IV. Prof. Subratanath Koner (Chemistry)
        Department of Chemistry, Jadavpur University,
        Jadavpur, Kolkata 700 032, INDIA
        PH: 913324572778

Facilities :
1. E-beam evaporation thin film deposition set up :

2. Experimental unit to study Light induced/modulated Physical Properties :

a) Measuring Magnetic field range : -1 to +1 Tesla;
b) Measuring Temperature range : 4 K to 300 K;
c) Light employed for measurement : Red light and Green Light

3. Spin Coating Unit :

Activities Till Date :

I. Research Publication in International SCI/Scopus indexed Journal: 12

II. PhD students from other Departments actively working in the Centre: 06

III. M. Sc. Students of Dept. of Physics completed their project using facilities in the Centre: 06

IV. Faculty of affiliated colleges actively engaged in research work (PhD) in the Centre:   03

V.Organization of National/International Conference/Workshop :
A Webinar for One Day National Workshop “Recent Trends in Optoelectronics and Semiconductor Devices for Computing and Communication” Celebrating National Inventors Month was organized by COSOD, Kazi Nazrul University Asansol on 20th May, 2020.

VI. Value added Course Offered :
Certificate Course (Credit = 4) in “Organic Optoelectronics & Spintronics : Fabrication, Modelling and Experimental Techniques”

VII.Collaboration :
 Fruitful collaboration with other Institute of importance in India and Abroad
International :

National :

  • Bhabha Atomic Research Centre (BARC), Department of Atomic Energy, India.
  • NIT (Durgapur & Agartala): Department of Physics, Dept. of Electronics.
  • UGC-DAE Consortium for Scientific Research Indore.
  • School of Medical Science and Technology, I.I.T. Kharagpur
  • AKCSIT, University of Calcutta
  • Dept. of ECE, NIT Mizoram


Publications :

  • D. Deb, P. Dey, K. K. Sharma, R. J. Choudhary, R. Rawat, A. Banerjee, “Temperature Driven Pinned Layer Magnetization Reversal in Exchanged Biased Fe3O4/Alq3/Co/CoO Hybrid Spin Valve”, IEEE Transactions on Magnetics 57, 4800106 (2021).
  • D. Deb, R. Debnath, S. K. Mandal, A. Lakhani, A. Nath, P. Dey, “Effect of interface on temperature dependent magnetoresistance and room temperature magnetoimpedance of La0.7Sr0.3MnO3/Polyvinyl Alcohol Nanocomposites”, Physica B: Condensed Matter, 582, 411962 (2020).


  • D. Deb, P. Dey, “Modeling of Temperature-Dependent Sign Reversal of Magnetoresistance in 99.95% La0.7Sr0.3MnO3-0.05%Paraffin Wax Nanocomposite: The Role of Pinning Center at Intergrain Defect Site”, Physica Status Solidi (b), 257, 1900402 (2020).
  • D. Deb, S. K. Mandal, A. Lakhani, A. Nath, P. Dey, “Interface driven electrical and magneto-transport properties of (100-x)% La0.7Sr0.3MnO3-x% Paraffin wax (0≤x≤1)hybrid nanocomposites”, The European Physical Journal B, 92, 165 (2019).


  • Sudip Chakraborty,  Aritra Acharyya,  Arindam Biswas,  J. N. Roy, “Noise Analysis of 1.0 THz GaN IMPATT Source”, 2019 Devices for Integrated Circuit (DevIC) (Published in IEEE Explore), DoI:  10.1109/DEVIC.2019.8783735
  • Debarati Nath, P. Dey, Aneesh M. Joseph, J. K. Rakshit, J. N. Roy, “Performance Improvement of bilayer CuPc/BPPC organic photodetector by thermal annealing”, Optical Materials, 108, 110371, 2020. (SCI – 2.023)
  • Debarati Nath, P. Dey, Aneesh M. Joseph, J. K. Rakshit, J. N. Roy, “CuPc/C60 heterojunction for high responsivity zero bias organic red light photodetector”, Applied Physics A, 126, 627, 2020. (SCI – 1.784)
  • Debarati Nath, P. Dey, Aneesh M. Joseph, J. K. Rakshit, J. N. Roy, “Zero bias high responsive visible organic photodetector based on pentacene and C60”, Optics & Laser Technology, 131, 106393, 2020. (SCI – 3.319)
  • Debarati Nath, Puja Dey, Aneesh M. Joseph, Jayanta Kumar Rakshit, Jitendra Nath Roy, “Photocurrent generation under forward bias with interfacial tunneling of carrier at pentacene/F16CuPc heterojunction photodetector”, Journal of Alloy & Compound, 815, 152401, 2020. (SCI – 4.175)
  • A. Raja, K. Mukherjee, J. N. Roy, K. Maji, “Analysis of all-optical polarization encoded quaternary GF adder processing soliton pulsesJournal of Optics (Springer), February 2020. DOI: m10.1007/s12596-020-00594-7
  • A. Raja, K. Mukherjee, J.N.Roy, “Design, analysis and applications of all-optical multifunctional logic using a Semiconductor Optical Amplifier–based polarization rotation switch”, Journal of Computational Electronics, February 2021.

    DOI: 10.1007/s10825-020-01607-1

  • 12. A. Raja, K. Mukherjee, J. N. Roy, “Analysis of new all optical polarization encoded DSOA based ternary NOT & XOR gate with simulation”, Photonic Network Communication, June 2021 DOI: 10.1007/s11107-021-00932-0.