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Dr. S. Venkataprasad Bhat

Ph.D

Assistant Professor (Research)

Dr. S. Venkataprasad Bhat joined SRM Research Institute in February 2014 and is leading the Green Energy Materials group. Before joining SRM, he has worked as a post-doctoral research associate at Purdue University, USA for 3 years after completing his doctoral studies in materials science at Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore, India. He has experience of working on solution based nanomaterials and fabrication as well as characterization of various optoelectronic devices. 

Research Grants

1) " Solution processed CZTS- TiO2 heterojunction for solar energy conversion: Early Career Research Award, DST-SERB,as PI, Total outlay: 30 lakhs (2016-2019).

2) "Development of electrode materials for high energy density lithium ion batteries and computational studies of solar absorber layers" Ministry of New and Renewable Energy (MNRE) mega project,as co-PI, Total outlay: 11.17 crores (2016-2019).

Research Interests

  • Optical properties of nanomaterials & Polymer nanocomposites
  • Energy conversion applications (Photocatalysis, Photovoltaics, Solid State Lighting, etc)
  • Solution based synthesis of CZTS solar absorbers for thinfilm solar cells
  • Rare earth free luminescent materials

 

 

Green Energy Materials group

Currently the Green Energy Materials group is interested to explore the use of earth abundant semiconductor such as CZTS in energy conversion devices. It is proposed to develop the low cost solution processed CZTS based absorber layer for highly efficient thin film solar cell devices, without using toxic solvents. The nano composites of such visible light absorbers with various n-type metal oxide nanostructures as well as graphene oxide based materials will be prepared and their optical properties will be explored for various energy related applications including photocatalysis. The group is also working on novel rare earth free luminescent materials for solid state lighting applications.

Members

JRF/PhD Students:

 

  • Mr. M. Dhanasekar, M. Sc in Physics from SRM University, joined as Junior Research Fellow in 2014. He is currently pursuing PhD in Physics. Solar cells and photocatalysts are his major areas of interest. He is currently working on non toxic precursor solutions for thin film solar cells and metal oxide based photocatalysts for dye degradation.
  • Mr. Vinayak Vitthal Satale, M.Sc. in Physics from Shivaji University, Kolhapur, joined as Junior Research Fellow under the DST –SERB project in 2016. Thin film Solar cells is his major research interest. Currently working on solution based CZTS-TiO2 heterojunction for solar energy conversion.
  • Mr. Sekar Sampath, M. Sc. in Chemistry from Muthuragam Government  Arts College, Vellore, joined as Junior Research Fellow. In 2016.  Photofunctional Materials is his major research interest. Currently working on rare earth free phosphors for white light emitting application.
  • Ms. Bhuvaneshwari E

 

M.Sc./M.Tech/B.Tech Project students:

  • Laxmi Prasanna
  • Prakhar Bhargava.

 

Alumni:

M.Sc./M.Tech/B.Tech Project students:

  • Debanick Banerjee
  • Abhishek Banerjee
  • Nitha Thomas
  • Neethu Antony
  • Ramakrishna Chitturi
  • Jenefer.V
  • Shinshunshim Hungyo
  • Sam Kingston
  • Ashwin Agathya
  • Moon Paul.

Facilities

  • Laboratory for solution based synthesis and processing of nano materials and thin films.
  • Spin coater
  • UV vis DRS spectrometer (Analytik Jena)
  • Flurolog-3 Photoluminescence spectrometer with  Peltier stage, liquid N2 dewar, quantum yield accessories.
  • Electrical characterization set up (Basic Hall effect & four probe measurement, Vacuum chamber, Keithley source meter, Probe tips)
  • Tubular furnace
  • Photoreactor

 

 


List of Publications

 

23)   M. Dhanasekar , V. Jenefer , Reshma B. Nambiar , S. Ganesh Babu , S. Periyar Selvam,

        B. Neppolian, S. Venkataprasad Bhat*

        Ambient light antimicrobial activity of reduced graphene oxide supported metal doped TiO2

        nanoparticles and their PVA based polymer nanocomposite films

        Materials Research Bulletin, 97 (2018) 238.

22)  M. Dhanasekar, Satyajit Ratha, Chandra Sekhar Rout*, S. Venkataprasad Bhat*:

        Efficient sono-photocatalytic degradation of methylene blue using nickel molybdate

        nanosheets under diffused sunlight

       Journal of Environmental Chemical Engineering, 5 (2017) 2997.

21)  R. Vinoth, S. Ganesh Babu, Vishal Bharti, V. Gupta, M. Navaneethan, S. Venkataprasad Bhat,

       C. Muthamizhchelvan, Praveen C. Ramamurthy, Chhavi Sharma, Dinesh K. Aswal, 

       Yasuhiro Hayakawa & B. Neppolian:

       Ruthenium based metallopolymer grafted reduced graphene oxide as a new hybrid solar

       light harvester in polymer solar cells.

       Scientific Reports, 7 (2017) 43133.

20)  M. Dhanasekar, S. Venkataprasad Bhat*:

       Facile synthesis of Cu2ZnSnS4 absorber layer for thin film solar cells using a highly stable

       precursor solution.

       Applied Surface Science418A (2017) 194

19)  Moon Paul, M. Dhanasekar, S. Venkataprasad Bhat*:

       Silver doped h-MoO3 nanorods for sonophotocatalytic degradation of organic pollutants

       in ambient sunlight.

       Applied Surface Science418A (2017) 113 .

18)  R. Paul*, R. N. Gayen, S. Biswas, S. Venkataprasad Bhat* and R. Bhunia:

        Enhanced UV detection by transparent graphene oxide/ZnO composite thin films.

        RSC Advances, 6 (2016) 61661.

17)  Rickey, K.M., Nian, Q., Zhang, G., Chen, L., Suslov, S., Bhat, S.Venkataprasad., Wu, Y.,

       Cheng, G.J., Ruan, X.:

       Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating.

       Scientific Reports, 5 (2015) 16052.

16)  Qiong Nian, Martin Y. Zhang, Yuefeng Wang, Suprem R Das, S. Venkataprasad Bhat,

        Fuqiang Huang and Gary J. Cheng:

       Charge carrier transport and collection enhancement of copper indium diselenide photoactive

       nanoparticle-ink by laser crystallization.

        Appl. Phys. Lett.,105 (2014) 111909.

       Erratum

15)   B. T. Spann, S. Venkataprasad Bhat, Q. Nian, K. M. Rickey, G. J. Cheng, X. Ruan and X. Xu:

         Enhancing Photo-induced Ultrafast Charge Transfer across Heterojunctions of CdS and

         Laser-Sintered TiO2 Nanocrystals.

         Phys. Chem. Chem. Phys., 16 (2014) 10669.

14)   K. M. Rickey, G. Zhang, L. Chen, S. Venkataprasad Bhat, Y. Wu, G. Cheng, X. Ruan:

        Effects of rapid thermal processing and pulse-laser sintering on CdTe nanofilms for photovoltaic

        applications.

        Proc. SPIE 8465, Nanostructured Thin Films V, 846505 (2012)

13)   S. Venkataprasad Bhat, A. Govindaraj, C.N.R. Rao:

        Hybrid solar cell based on P3HT–ZnO nanoparticle blend in the inverted device configuration.

         Solar Energy Materials & Solar Cells, 95 (2011) 2318.

12)   S. Venkataprasad Bhat, S. B. Krupanidhi, and C. N. R. Rao:

        A Comparative Study of the Effect of Metallic Au and ReO3 Nanoparticles on the Performance of

        Silicon Solar Cells.

        Applied Physics Express 3 (2010) 115001.

11)   D. Swain, V.Bhadram, S. Venkataprasad Bhat, G. Pradhan, C. Narayana and C. N. R. Rao:

        Superionic Phase transition in KHSO4: A Temperature Dependent Raman Investigation.

        J. Phys. Chem. A, 114 (2010) 10040.

10)  Prashant Kumar, L. S. Panchakarla, S. Venkataprasad Bhat, Urmimala Maitra,

       K. S. Subrahmanyam and C. N. R. Rao:

       Photoluminescence, white-light emitting properties and related aspects of ZnO nanoparticles

       admixed with graphene and GaN.

        Nanotechnology, 21 (2010) 385701.

9) S. Venkataprasad Bhat and S. R. C. Vivekchand, A. Govindaraj,and C. N. R. Rao:

    Photoluminescence and photoconducting properties of ZnO nanoparticles.

     Solid State Communications, 149 (2009) 510.

8) Anirban Ghosh, Jyoti Ranjan Sahu, S. Venkataprasad Bhat and C.N.R. Rao:

     A Raman study of multiferroic LuMnO3.

     Solid State Sciences, 11 (2009) 1639–1642.

7) R.V.K. Mangalam, S.Venkataprasad Bhat, A. Iyo, Y. Tanaka, A. Sundaresan and C.N.R. Rao:

     Dielectric properties, thermal decomposition and related aspects of BiAlO3.

     Solid State Communications, 146 (2008) 435.

6) B. Chitara, S. Venkataprasad Bhat, S. R. C. Vivekchand, A. Gomathi and C. N. R. Rao:

     White-light sources based on composites of GaN nanocrystals with conducting polymers and

    nanophosphors.

     Solid State Communications, 147 (2008) 409.

5) Kaniska Biswas, S. Venkataprasad Bhat and C. N. R. Rao:

     Surface-Enhanced Raman Spectra of Aza-aromatics on Nanocrystals of Metallic ReO3.

     Journal of Physical Chemistry C, 111 (2007) 5689.

4) S. Venkataprasad Bhat, Kaniska Biswas and C. N. R. Rao:

    Synthesis and optical properties of In-doped GaN nanocrystals.

     Solid State Communications, 141(2007) 325.

3) S. Venkataprasad Bhat and S. R. C. Vivekchand:

     Optical spectroscopic studies of composites on conducting PANI with CdSe and ZnO Nanocrystals.

     Chemical Physics Letters, 433 (2006) 154.

2) S. Venkataprasad Bhat, A. Govindaraj and C. N. R. Rao:

    Tuning the emission bands of nanophosphors through the refractive index of the medium.

     Chemical Physics Letters, 422 (2006) 323.

1) S. Venkataprasad Bhat and F. L. Deepak:

     Tuning the bandgap of ZnO by substitution with Mn2+, Co2+ and Ni2+.

     Solid State Communications, 135 (2005) 345.

 

 


Courses offered:

  • Nanotechnolgy for energy systems (NT0012) for B.Tech. Nanotechnology
  • Nanomagnetism (NT0006) for B.Tech. Nanotechnology
  • Solid State Technology (NT2119) for M. Tech. Nanotechnology.
  • Fundamentals of Nanoscience and Nanotechnology (NT2001) for M. Tech. Nanotechnology.
  • Elements of Nanoscience and Nanotechnology (UPY14601) for B. Sc. Physics.

Opportunities

Highly motivated students with background/interest in materials science, physics, chemistry, nanotechnology and related subjects are welcome to the group.

Please contact us with your details.

 

 

Contact Details:

Office: R-07, 13th Floor, Central Library Building,

SRM University, Kattankulathur, Kancheepuram.

Tamil Nadu, India. PIN:603203

Email: venkataprasad.b@res.srmuniv.ac.in

Tel: +91-44-27417907

Fax: +91-44-27456702