Specialization

Experimental condensed matter physics; Thin film technology; Thin film photovoltaics; Transparent electronics; Failure in thin films

Email

bhaskar@thapar.edu

Contact no.8437813908

Area: Experimental condensed matter physics; Thin film technology; Thin film photovoltaics; Transparent electronics; Failure in thin films;

Group website: https://sites.google.com/site/bhaskarmohanty

EDUCATION

• Ph.D., Department of Physics, IIT Madras (2007).

• M.Sc. (Physics), Department of Physics, Ravenshaw College/Utkal University, Odisha, India (1999).

• B.Sc. (Hons in Physics), Ravenshaw College/Utkal University, Odisha, India (1997).

PROFESSIONAL EXPERIENCE

• Professor, School of Physics & Materials Science, Thapar Institute of Engineering & Technology, July 2022-

• Associate Professor, School of Physics & Materials Science, Thapar Institute of Engineering & Technology, May 2016 -June 2022

• Assistant Professor, School of Physics & Materials Science, Thapar Institute of Engineering & Technology, Aug. 2012- May 2016

Research Projects

Publications and other Research Outputs

• I Gupta, K Pandey, S Singla, R Jain, BC Mohanty, Influence of sulfurization temperature on grain growth in Cu2ZnSnS4 thin films synthesized for solar cell applications, Physica Scripta 99, 105979 (2024).

• I Gupta, S Singla, P Kanjariya, R Jain, BC Mohanty, M Nayak, Facile growth of Cu2ZnSn(SSe)4 thin films with controlled phase and microstructure evolution from green ethanol-based molecular solutions, Journal of Materials Science: Materials in Electronics 35, 1850  (2024)

• Jyoti, BC Mohanty, Barium concentration controlled phase evolution in molecular solution processing of Cu2BaSnS4 thin films for solar cells with improved optical and electrical properties, Journal of Alloys and Compounds, 986, 174105 (2024)

• Jyoti, BC Mohanty, Revealing performance limiting factors in Cu2BaSnS4 thin film solar cells, Optik 295, 171504 (2023)

• K Pandey, BC Mohanty, Facile single step synthesis of Cu2ZnSnS4 thin films by sputtering from a single target and their electrical characterization, Journal of Alloys and Compounds 925 (2022) 166657.

• Jyoti, BC Mohanty, Improving performance of Cu₂ZnSnS₄ solar cell via back contact interface engineering, Solar Energy, 230 (2021) 986.

• K Pandey, BC Mohanty, Influencing mechanism of post-sulfurization with sulfur flakes on phase evolution and Schottky diode characteristic of Cu₂ZnSnS₄ thin films sputter deposited from a single target, Solar Energy, 228 (2021) 338.

•  N Bansal, BC Mohanty, K Singh, Diffusional investigation of alkali ions from composition tuned glass substrates to Mo-thin film for solar cell application, Surfaces & Interfaces 24 (2021) 101060.

• I Gupta, K Pandey, AK Jain, P Malar, BC Mohanty, Critical influence of annealing configuration in kesterite phase evolution during growth of Cu2ZnSnS4 thin films from non-toxic environment-friendly solutions, J. Electronic Mater. 50 (2021) 1314 - 1322.

• K Pandey, BC Mohanty, A thin Cu interlayer-mediated control of phase evolution of Cu2ZnSnS4 thin films grown by RF magnetron sputtering of a single elementary target with high white light sensitivity, Appl. Surf. Sci. 539, 148149 (2021)

• N Bansal, M Gupta, BC Mohanty, K Singh, Evaluating the role of composition and local structure on alkali out‐diffusion in glasses for thin‐film solar cells, J. Am. Ceramic Soc. 104 (2), 851-859 (2021)

• N Bansal, BC Mohanty, K Singh, Designing composition tuned glasses with enhanced properties for use as substrate in Cu₂ZnSnS₄ based thin film solar cells, J. Alloys Compd. 819, 152984 (2020).

• YS Jung, CS Han, BC Mohanty, HJ Choi, JH Lee, HJ Kim, YS Cho, Balanced Performance Enhancements of a-InGaZnO Thin Film Transistors by Using All-Amorphous Dielectric Multilayers Sandwiching High-k CaCu3Ti4O12, Adv. Electronic Mater. 10, 1900322 (2019).

•  I Gupta, KJ Tiwari, P Malar, BC Mohanty, Evaluating the role of precursor concentration in facile conformal coating of sub-micrometer thick Cu2ZnSnS4 films using non-toxic ethanol based solutions, Appl. Surf. Sci. 494, 795-804 (2019).

• I Gupta, BC Mohanty, Eliminating secondary phases: Understanding kesterite phase evolution of Cu2ZnSnS4 thin films grown from ethanol based solutions with high photosensitivity, Solar Energy 181, 214-221 (2019).

• DB Kim, SM Lee, JW Jang, BC Mohanty, YS Cho, Nanoindentation and Bending Fracture Behavior of Flexible Sulfide Thin Films Grown at Near Room Temperature With in Situ Tensile/Compressive Stress, Adv. Engineering Mater. 21, 1801329 (2019)

• N Bansal, K Pandey, K Singh, BC Mohanty, Growth control of molybdenum thin films with simultaneously improved adhesion and conductivity via sputtering for thin film solar cell application, Vacuum 161, 347-352 (2019).

• SM Lee*, W Jang*, BC Mohanty*, JY Yoo, JW Jang, DB Kim, Y Yi, A Soon, YS Cho, Experimental Demonstration of in Situ Stress-Driven Optical Modulations in Flexible Semiconducting Thin Films with Enhanced Photodetecting Capability, Chem. Mater. 30, 7776-7781 (2018). (* equal contribution)

• HJ Choi, W Jang, BC Mohanty, YS Jung, A Soon, YS Cho, Origin of Prestress-Driven Optical Modulations of Flexible ZnO Thin Films Processed in Stretching Mode, J. Phys. Chem. Lett. 9, 5934-5939 (2018).

• B. C. Mohanty, K. Bector, R. Laha, Elucidating doping driven microstructure evolution and optical properties of lead sulfide thin films grown from a chemical bath, Appl.  Surf. Sci. 435 (2018) 444–451.

• D.H. Yeon*, B.C. Mohanty*, C. Y. Lee*, S. M. Lee, and Y.S. Cho, High-Efficiency Double Absorber PbS/CdS Heterojunction Solar Cells by Enhanced Charge Collection Using a ZnO Nanorod Array, ACS Omega 2, 4894–4899 (2017) (*equal contribution).

• I. Gupta and B. C. Mohanty, Dynamics of surface evolution in semiconductor thin films grown from a chemical bath, Scientific Reports 6, 33136 (2016).

• I. J. Choi, J. W. Jang, B. C. Mohanty, S. M. Lee, and Y. S. Cho, Improved Photovoltaic Characteristics and Grain Boundary Potentials of CuIn0.7Ga0.3Se2 Thin Films Spin-Coated by Na-Dissolved Nontoxic Precursor Solution, ACS Appl. Mater. Interfaces, 8, 17011–17015 (2016).

• D.H. Yeon*, B.C. Mohanty*, S. M. Lee, and Y.S. Cho, Effect of band-aligned double absorber layers on photovoltaic characteristics of chemical bath deposited PbS/CdS thin film solar cells, Scientific Reports, 5, 14353 (2015) (*equal contribution).

• Y. H. Jo, J. W. Jang, B. C. Mohanty, H. B. Kang, and Y. S. Cho, Improved photovoltaic and grain boundary characteristics of single elementary target-sputtered Cu2ZnSnSe4 thin films by post sulfurization/selenization process, J. Phys D 48 (2015) 245103.

• S.M. Lee, D.H. Yeon, B.C. Mohanty, and Y.S. Cho, Tensile Stress-Dependent Fracture Behavior and Its Influences on Photovoltaic Characteristics in Flexible PbS/CdS Thin-Film Solar Cells, ACS Appl. Mater. Interfaces 7(2015) 4573.

• Y. H. Jo, B. C. Mohanty, D. H. Yeon, S. M. Lee and Y. S. Cho, Single Elementary Target-Sputtered Cu2ZnSnSe4 Thin Film Solar Cells, Solar Energy Mater. Solar Cells 132 (2015) 136.

• B. C. Mohanty, D. H. Yeon, J. H. Yun, K. H. Yoon and Y. S. Cho, RF power dependence of refractive index of room temperature sputtered ZnO:Al thin films, Appl. Phys. A 115 (2014) 347.

• J. S. Kim*, B. C. Mohanty*, C. S. Han, S. J. Han, G. H. Ha, L. Lin, Y. S. Cho, In situ magnetic field-assisted low temperature atmospheric growth of GaN nanowires via the vapor- liquid-solid mechanism, ACS Appl. Mater. Interfaces 6 (2014) 116. (*equal contribution).

• C. S. Han, B. C. Mohanty*, H. R. Choi and Y. S. Cho*, Surface Scaling Evolution and Dielectric Properties of Sputter-Deposited Low Loss Mg2SiO4 Thin Films, Surf. Coating Technol 231 (2013) 229. ). (*Corresponding author).

• S. M. Lee, B. C. Mohanty, Y. H. Jo, D. H. Yeon and Y. S. Cho, Phase development, microstructure and optical properties of Cu2ZnSnSe4 thin films modified with Pb and Ti, Surf. Coating Technol. 231 (2013) 389.

• B. C. Mohanty, D. H. Yeon, S. N. Das, J. H. Kwak, K. H. Yoon, and Y. S. Cho, Unusual near-band-edge photoluminescence at room temperature in heavily-doped ZnO:Al thin films prepared by pulsed laser deposition, Mater. Chem. Phys. 140 (2013) 610.

• O.H. Kwon, B.C. Mohanty, D.H. Yeon, J.S. Yeo, I.H. Cho, K.H. Lee and Y.S. Cho, "Effective Laser Sealing Enabled by Glass Thick Films Containing Carbon Black/Carbon Nanotube," J. Am. Ceram. Soc. 96 (2013) 1113.

• C. S. Han, B. C. Mohanty, C. Y. Kang, Y. S. Cho, Sputter-deposited low loss Mg2SiO4 thin films for multilayer hybrids, Thin Solid Films 527 (2013) 250.

• B. C. Mohanty, B. K. Kim, D. H. Yeon, Y. H. Jo, I. J. Choi, S. M. Lee and Y. S. Cho, Structural and Raman scattering properties of ZnO:Al thin films sputter-deposited at room temperature, J. Electrochem. Soc.159 (2012) H96.

• B. C. Mohanty, J. W. Lee, D. H. Yeon, Y. H. Jo and Y. S. Cho, Dopant induced variations in microstructure and optical properties of CeO2 nanoparticles, Mater. Res. Bulletin. 46 (2011) 875.

• B. C. Mohanty, H. R. Choi and Y. S. Cho, Fluctuations in global surface scaling behavior in sputter deposited ZnO thin films, EPL (Europhysics Lett.) 96 (2011) 26003.

• B. C. Mohanty, D. H. Yeon, B. K. Kim, and Y. S. Cho, Spatial variation in structural, morphological and optical properties of aluminum-doped ZnO thin films grown by 30ï‚°- incident radio frequency magnetron sputtering, J. Electrochem. Soc. 158 (2011) P30.

• B. C. Mohanty, H. R. Choi, Y. M. Choi and Y. S. Cho, Thickness-dependent fracture behavior of flexible ZnO:Al thin films, J. Phys. D: Appl. Phys. 44 (2011) 025401.

• S. M. Lee, Y. H. Jo, H. E. Kim, B. C. Mohanty and Y. S. Cho, Barium Neodymium Titanium Borate Glass-Based High k Dielectrics, J. Am. Ceram. Soc. 95 (2012) 1356.

• Y. H. Jo, S. H. N. Doo, J. S. Lee, B. C. Mohanty, Y. S. Cho, Effect of Zn and Ca modifications on crystallization and microwave dielectric properties of lanthanum borates, J. Alloys Compd. 509 (2011) 849.

• B. C. Mohanty, H. R. Choi and Y. S. Cho, Scaling of Surface Roughness in Sputter-Deposited ZnO:Al Thin Films, J. Appl. Phys. 106 (2009) 054908.

• B. C. Mohanty, Y. H. Jo, D. H. Yeon, I. J. Choi,and Y. S. Cho, Stress-induced anomalous shift of optical band gap in ZnO:Al thin films, Appl. Phys. Lett. 95 (2009) 062103.

• Y. H. Jo, B. C. Mohanty and Y. S. Cho, Enhanced Electrical Properties of Pulsed Laser-Deposited CuIn0.7Ga0.3Se2 Thin Films viaProcessing Control, Solar Energy 84 (2010) 2213.

• H. R. Choi, B. C. Mohanty, J. S. Kim and Y. S. Cho, AlN passivation layer-mediated improvement in tensile failure of flexible ZnO:Al thin films, ACS Appl. Mater. Interface. 2 (2010) 2471.

• D. H. Yeon, B. C. Mohanty, Y. H. Jo and Y. S. Cho, Preparation and Electrical Properties of CuInSe2 Thin Films by Pulsed Laser Deposition Using Excess Se Targets, J. Mater. Res. 25 (2010) 1936.

• Y. H. Jo, B. C. Mohanty, and Y. S. Cho, Crystallization and surface segregation in CuIn0.7Ga0.3Se2 thin films on Cu foils grown by pulsed laser deposition, Appl. Surf. Sci.256 (2010) 6819.

• S. H. N. Doo, Y. H. Jo, J. S. Lee, B. C. Mohanty, K. C. Sekhar, D. K. Min, K. W. Chung and Y. S. Cho, Enhanced Quality Factor of Zinc Lanthanum Borates-Based Dielectrics via the Control of ZnO/B2O3 Ratio, J. Am. Ceramic Soc. 93 (2010) 334.

• M. R. Ananthan, B. C. Mohanty and S. Kasiviswanathan, Micro-Raman spectroscopy studies of bulk and thin films of CuInTe2, Semiconductor Sci. Technol. 24 (2009) 075019.

• Y. H. Jo, B. C. Mohanty and Y. S. Cho, Structural and Electrical Characteristics of ZnO Thin Films on Polycrystalline AlN Substrates, J. Am. Ceram. Soc.92 (2009) 665-670.

• W. B. Lim, D.W. Shin, B. C. Mohanty, Y. J. Park, and Y. S. Cho, Chemical durability of anorthite-based low temperature co-fired ceramics, J. Ceramic Soc. Jpn, 117 (2009) 1138.

• B. C. Mohanty, P. Malar, T. Osipowicz, B. S. Murty, S. Varma and S. Kasiviswanathan, Characterization of silver selenide thin films grown on Cr-covered Si substrates, Surf. Interface Anal., 41 (2009) 170.

• B. C. Mohanty, A. K. Tyagi, A. K. Balamurugan, S. Varma and S. Kasiviswanathan, SIMS study of effect of Cr adhesion layer on the thermal stability of silver selenide thin films on Si, Nucl. Instrum, Meth. B, 266 (2008) 1480.

• Y. H. Jo, D. H. Yeon, B. C. Mohanty, and Y. S. Cho, Gadolinium Zinc Borate Glass-Based Low Temperature Co-fired Ceramics, Metals Mater. Int., 14 (2008) 493.

• B. C. Mohanty and S. Kasiviswanathan, Thermal stability of silver selenide thin films on silicon formed from the solid state reaction of Ag and Se films, Thin Solid Films, 515 (2006) 2059.

• B. C. Mohanty, B.S. Murty, V. Vijayan and S. Kasiviswanathan, Atomic force microscopy study of thermal stability of silver selenide thin films grown on silicon, Appl. Surf. Sci., 252 (2006) 7975.

• B. C. Mohanty and S. Kasiviswanathan, Transmission Electron Microscopy and Rutherford Backscattering Spectrometry Study of Ag2Te Films Formed from Ag-Te Thin Film Couples, Cryst. Res. Technol., 41 (2006) 59.

• P. Malar, B. C. Mohanty and S. Kasiviswanathan, Characterization of interface between CuInSe2 and In2O3, J. Phys. Chem. Solids, 66 (2005) 1928.

• P. Malar, B. C. Mohanty and S. Kasiviswanathan, Growth and Rutherford backscattering spectrometry study of direct current sputtered indium oxide films, Thin Solid Films, 488 (2005) 26.

• P. Malar, B. C. Mohanty, A.K. Balamurugan, S. Rajagopalan, A.K. Tyagi and S. Kasiviswanathan, Growth and SIMS study of d.c.-sputtered indium oxide films on silicon, Surf. Interface Anal., 37 (2005) 281.

• B. C. Mohanty and S. Kasiviswanathan, Two-prism setup for surface plasmon resonance studies, Rev. Sci. Instrum., 76 (2005) 033103.

PAPERS PRESENTED IN CONFERENCES

• Indu Gupta and B. C. Mohanty,* Scaling of surface roughness in CdS thin films deposited by ammonia free chemical bath deposition, International Conference on Advanced Electromaterials 2015, Nov. 17-22, 2015, Jeju Korea.

• Indu Gupta and B. C. Mohanty*,Bath Temperature dependent properties of ammonia-free chemical bath deposited CdS Thin Films, Oral presentation at International Conference on Recent Advances In Nano Science And Technology - 2015, July 8-10, 2015, Chennai.

• B. C. Mohanty*, D. H. Yeon, I. J. Choi and Y. S. Cho, Influence of RF power on Urbach energy tails and refractive index of room temperature deposited Al-doped ZnO thin films, Oral presentation at Meeting of Korean Ceramic Society, Oct. 24-25, 2011, Gwangju, Korea.

• B. C. Mohanty*, B. K. Kim, D. H. Yeon, I. J. Choi, Y. H. Jo, S. M. Lee and Y. S. Cho, RF Power Dependent Structural, Electrical and Optical Properties of ZnO:Al Thin Films Grown at Room Temperature, Oral presentation at International meeting on Information Display (IMID) 2011, Oct. 11-15, 2011, KINTEX, Korea.

• B. C. Mohanty*, H. R. Choi, Y. M. Choi and Y. S. Cho, Influence of thickness on tensile failure of ZnO:Al thin films on flexible polymer substrates, Oral presentation at International Conference on Electronic Materials & Nanotechnology for Green Environment (ENGE)-2010, Nov. 21-24, 2010, Jeju, Korea.

• B. C. Mohanty*, D. H. Yeon, B. K. Kim and Y. S. Cho, RF power dependent structure, morphology and electrical properties of room temperature deposited ZnO:Al thin films, Oral presentation at International Union of Materials Research Societies (IUMRS-ICEM) 2010, Aug. 22-27, 2010, KINTEX, Korea.

• B. C. Mohanty*, Y. H. Jo, D. H. Yeon, I. J. Choi and Y. S. Cho, Substrate temperature dependent preferred orientation of pulsed laser deposited ZnO:Al thin films, Oral presentation at International conference on electroceramics (ICE), 2009, Dec. 13-17, 2009, New Delhi, India.

• B. C. Mohanty*, Y. H. Jo, D. H. Yeon, I. J. Choi and Y. S. Cho, Effect of RF power and spatial variation of properties of ZnO:Al thin films grown by 30ï‚°- incident RF magnetron sputtering for solar cell applications, Oral presentation at 19thInternational Photovoltaic Science & Engineering Conference & Exhibition (PVSEC), Nov. 9-13, 2009, Jeju, Korea.

• B. C. Mohanty*, Y. H. Jo, D. H. Yeon, I. J. Choi and Y. S. Cho, Lateral distribution of structural, electrical and optical properties of RF-magnetron sputter-deposited ZnO:Al thin films, Oral presentation at International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA 2009)/International Symposium on Electroceramics (ISE 2009), Nov. 9-13, 2009, Jeju, Korea.

• Y. H. Jo, D. H. Yeon, B. C. Mohanty, I. J. Choi and Y. S. Cho, Cu(In,Ga)Se2 thin films on Cu foils by pulsed laser deposition, Presented at Fall 2008 meeting of the Korean Ceramic Society (Awarded Best Poster award).

• B. C. Mohanty*, A. K. Tyagi, A. K. Balamurugan, S. Varma and S. Kasiviswanathan, SIMS study of effect of Cr adhesion layer on the thermal stability of silver selenide thin films on Si, Presented at 18th international conference on Ion Beam Analysis (IBA), Sept. 23-28, 2007, Hyderabad, India.

• B. C. Mohanty*, V. Damodara Das and S. Kasiviswanathan, Characterization of Silver-Tellurium stacks, Paper presented at “National conference on Emerging Areas in Applied Physics”, 21st-23rd Feb, 2004, ISM Dhanbad, India.

• B. C. Mohanty* and S. Kasiviswanathan, Surface Plasmon Resonance Studies in Silver-Tellurium Stacks, Proceedings of DAE-SSPS 2004, 26th -30th Dec, 2004, Amritsar, India, page: 504.

* self as presenting author

Awards and Honours

• Indian national scholarship for performance in High school examination.

• Research scholarship to pursue higher studies and research after qualifying “Graduate Aptitude Test in Engineering (GATE-2001)” conducted by Indian Institute of Technology held in February 2001.

• “Senior Research Fellowship” by ‘Council of Scientific and Industrial Research’, Govt. of India.

• Best poster award, Korean Ceramic Soc. “Cu(In,Ga)Se2 thin films on Cu foils by pulsed laser deposition, Fall 2008 meeting.

• Postdoctoral fellowship, Ministry of Education, Government of Korea (BK 21 scheme). Subsequently promoted to “Research Professor” for excellence in research and Lab mentoring.