K. S. Ojha

Department Department of Physics
Designation Assistant Professor (GR-I)
Educational Qualification Ph. D.; Postdoc (K. U. Leuven, Belgium)
E-Mail ksojha.phy@nitrr.ac.in
Contact Number 8962378087
Areas of Interest

Quantum Dots, 2D Materials, Nanomaterials based Optoelectronic Devices  

Publications

Research Papers Published in Journals:

1. "Impact of Cu Concentration on Optical Properties of CIS and CIS/ZnS Core–Shell  QDs" Priya Chandra and K. S. Ojha, Vol. 223 (6), physica status solidi (a), 2026.

2. Tailoring morphology and optical properties of CdS nanostructures using PEG                  and EDTA: photocatalytic dye/drug degradation and hydrogen evolution, Labhesh            Baid and K. S. Ojha, Applied Physics A (Materials Science &                                            Processing), DOI: 10.1007/s00339-026-09556-5, 2026.

3. “Impact of concentration and excitation wavelength on fluorescence behaviour of CuInS2 QDs” Priya Chandra and K.S. Ojha, Solid State Sciences, 163, 107886, 2025.

4. “Temporal evolution of optical and photocatalytic properties of hydrothermally                 synthesized EDTA-encapsulated CdS spherical nanostructures” Labhesh Baid and K.         S. Ojha, Chemical Physics Impact, 8, 100623, 2024.

5. “Effect of CTAB and PVP on morphological and optical properties of CdS microstructures” Labhesh Baid and K. S. Ojha, J. Materials Science: Materials in Electronics, 35 (16), 1-10, 2024.

 6. “Optical and vibrational properties of Ni doped ZnSe nanospheres”, K. S. Ojha and S. M. Saini, Optik, 232,166570, 2021.

7. “Optical and dielectric characterization of PVA capped ZnSe nanorods”, K. S. Ojha, A. K. Shrivastav, J. Applied Spectroscopy, 87(1), 2020.

8. “Novel nanostructure of cadmium selenide synthesized by solvothermal method and their Characterization”, K S Ojha, Optik, 169, 297-302, 2018.

9. “Structural and optical study of copper doped zinc sulfide nanoparticles” P. Mishra, K. S. Ojha and A. Khare, Journal of Applied Spectroscopy, 85 (4), 2018.

10. “Structural and optical properties of PVA doped zinc sulphide thin films” K. S. Ojha, Optik, 127, 2586–2589, 2016.

11. “Structural and Dielectric Study of Zirconium Modified Bismuth Sodium Titanate Thin Film” K. S. Ojha, S. Agrawal, J. Materials Today: Proceedings, 2, 4369 –4372, 2015.

12. “Reinforced Dielectric Properties of MWCNT Filled Microcellular Silicone Elastomer Nanocomposites” S. Agrawal K. S. Ojha, Dilip Sahu, J. Materials Today: Proceedings, 2, 4516 – 4520, 2015.

13. “Structural Optimization of Bismuth Sodium Titanate Thin Film” K. S. Ojha, Ferroelectrics, 474, 163–168, 2015.

14. “Laser Induced Spectra of SiN Molecule in Near IR Region” K. S. Ojha, R. Gopal, International Journal of Spectroscopy, Vol. 2013, pp 5.

15. “New Band Systems of SiN Radical” K. S. Ojha and R. Gopal, Spectrochimica Acta Part A: Mol. Biomol. Spectrosc., 109, 155-157, 2013.

16. “Dielectric and Impedance Study of Optimized Cadmium Sulphide Thin Film” K. S. Ojha, R. L. Srivastava, Chalcogenide Letters, 10 (1), 1-10, 2013.

17. “Thermal and Structural Characterization of Lead Free Relaxor Bismuth Sodium Titanate: Processing Optimization for Phase Pure Material” K. S. Ojha, K. N. Singh, P. K. Bajpai, International Journal of Engineering Research &Technology, 2 (1), 409- 416, 2013.

18. “New Band Systems of SiC Molecule in Visible Region” K. S. Ojha, R. Gopal, Spectroscopy Letter, 44 (4), 267-272, 2011.

19. “Reinvestigation of Emission Spectra of silicon dimer in 360-540 nm Region” K. S.  Ojha, P. K. Bajpai, R. Gopal, J. Int. Academy of Physical Sciences, 15 (1), 1-14, 2011.

20. “Laser produced spectra of SiC molecule in the region of 550-1020 nm” K.S. Ojha, J. Int. Academy of Physical Sciences, 14 (1), 233-243, 2010.

21. “Laser produced spectra of Si2 molecule in the region of 540-1010 nm” K. S. Ojha, R. Gopal, Spectrochim. Acta Part A: Mol. Biomol. Spectrosc., 71 (3), 1003-1006, 2008.

22. “Laser produced spectrum of B-X and B-A systems of SiN molecule” K. S. Ojha, R. Gopal, Indian Journal of Physics, 80, 819-822, 2006.

23. “Laser Induced Breakdown Spectra of Zn2 Molecule in the Violet Region” S. C. Singh, K. S. Ojha, R. Gopal, Pramana, 67, No. 3, 519-527, 2006.

Research Papers Published in Proceedings:

1. "PEG-capped ZnS Nano-crystals: Structural and Optical Properties" Priya Chandra and K. S. Ojha, AIP Conf. Proc. 3198, 020042 (2025), https://doi.org/10.1063/5.0248259.

2. “Optical characterization of CTAB assisted Ni doped ZnS nanoparticles”, K. S. Ojha and S. M. Saini, 1120 (2021) 012010, doi:10.1088/1757-899X/1120/1/012010, IOP Conf. Series:                      Materials Science and Engineering.

3. “Impedance Spectroscopy of Sodium Bismuth Titanate (NBT) Prepared by Solid State Reaction Method” K. S. Ojha, K. N. Singh, P. K. Bajpai, Proceeding of National Seminar on                           Ferroelectrics & Dielectrics (Published by AIP), Vol. 1372, 154-164, 2011.

4. “Diagnostics of silicon plasma produced in argon atmosphere” K. S. Ojha, R. Gopal, Proceeding of XXXIV International Conference of Optics and Photonics (ICOP), 2009.

5. “New band system of silicon dimer” K. S. Ojha, R. Gopal, Proceeding of XXXIV International Conference of Optics and Photonics (ICOP), 2009.

6. “Laser produced spectra of SiC molecule in the region of 550-800 nm” K. S. Ojha, S. C. Sing, R.
     Gopal, Proceeding of XVth National Symposium on Ultrasonic (NSU-2006), PP 188-190.

7. “Laser Spectroscopy of D (1Πu)→A (3Πg) and C (1Σ+u)→ A (3Πg) Systems of Zinc Dimer” S. C. Singh, K. S. Ojha and R. Gopal, Proceeding of XVth National Symposium on Ultrasonic            (NSU-2006), PP 184-187.

8. “New band system of Zn2 molecule in blue region” A. Singh, K. S. Ojha, R. Gopal, Proceeding of Fourth DAE-BRNS National Laser Symposium (NLS-4, 2005), PP 337-338.

Other Info.

Sponsered Projects:

1. “CQD Based SWIR Imaging Sensor Development” Sponsered by ISRO/RES/RAC-S/IITBHU/2025-26, (Rs. 46.84 Lakhs) (Ongoing)

2. "Investigation of Structural and Luminescence Properties of CdS/ZnS, ZnS/CdSe and ZnS/ZnSe core/shell Nanomaterials using Solvothermal Approach,  Sponsered by NIT Raipur

    (Cost Rs 4.10 Lakhs) (Completed)

Book Chapetrs:

1. "Luminescence Spectroscopic Techniques" Priya Chandra and K. S. Ojha, ISBN 978-3-032-08745-4, https://doi.org/10.1007/978-3-032-08745-4, Springer Nature, 2026.

2. "Morphological and Optical Investigation of CTAB and PVP Capped ZnS Microspheres" Priya Chandra and K. S. Ojha, ISBN 978-981-96-6795-6, https://doi.org/10.1007/978-981-96-6795-6,

    Springer Nature, 2026.

3. "Temperature Dependent Structural and Optical Properties of SnSe2 Nanosheets" Yogita Gendre, K. S. Ojha, and Chinmaya Mahapatra, ISBN 978-981-96-6795-6, https://doi.org/10.1007/978-      981-96-6795-6, Springer Nature, 2026.

Book Edited: Proceeding of XVI-National Seminar on Ferroelectrics & Dielectrics (NSFD-XVI); Vol. 1372; ISBN 978-0-7354-0932-3; Published by American Institute of Physics


Conference Organized:

1. Ist National Conference on Quantum Materials & Devices (NCQMD-2026), March 12-13, 2026

2. 3rd National Conference on Advanced Materials and Applications, November 2021

3. International Conference on Technological Innovations through Modern Engineering Sciences(TIMES-2013)

Invited Talk: 01