Dr. M. Raghavender
Assistant Professor
ragha@yogivemanauniversity.ac.in, toraghavender@rediffmail.com
Qualification :
Ph.D. in Physics, from Department of Physics, Osmania University, Hyderabad, India.
PDF/Teaching experience :
July 2009 to Till to date : Assistant Professor, Dept. of Physics, Yogi Vemana University, Kadapa, Y.S.R. Dist, A.P., India.
August 2006 to July 2009 : Research Scientist – Aisin Cosmos R&D Co Ltd, India Branch – Indian Institute of Chemical Technology (IICT), Hyderabad, A.P.,India.
Area/s of research interests :
Dye sensitized solar cells (3rd Generation of Photovoltaics).
Synthesis, characterization of nano-multiferroics.
Research Focus:
Photovoltaic (PV) solar cells are wee-designed and attractive devices for electrical energy production. The price of solar power from inorganic silicon technology still significantly high, thus prohibiting the large-scale applications. Dye sensitized solar cell (DSSC) has been expected as one of the potential candidate for the next generation low cost solar cells. These devices have found advantages of low weight, transparent, flexible, little impact on the environment, free from chemical and noise pollution. We here interested on development of semiconductor nano-crystallite mesoscopic based dye sensitized solar cells.
Description of Research Work:
We are interested on optimisation of spectral response, photocurrent, photovoltage and long-term stability. Currently we engaged on develop low cost counter-electrode, charge carrier dynamics of the DSSC devices.
Projects undertaken (if any) :
Fabrication of low cost nano crystalline TiO2 based dye sensitized solar cells”. Project Sanction No: SR/FTP/PS-111/2010, dated 16th April, 2012 & SERB Order No: SR/FTP/PS-111/2010, dated 04th July, 2012, Sponsoring Agency is Department of Science and Technology (DST), New Delhi. Total outlay of the project (Rs.): 21,33,000/-.
Project Fellows and details of the research work in brief:
Mrs. K. Susmitha Reddy is presently working as Project Assistant in the DST sponsored research project. Her nature of work is to develop polymer, graphene based counter-electrodes for DSSC applications, study its long-term stability and charge carrier dynamics.
Research Scholars :
1. Mrs. K. Susmitha Reddy - Research topic: Design and development of low cost dye sensitized solar cells.
2. Mr. P. Lokesh - Research topic: Studies on dye sensitized solar cells and charge carrier dynamics.
Achievements/Awards :
DST-Young Scientist Award from Department of Science and Technology, New Delhi, India – April, 2012.
Dr. K. V. Rao Young Scientist Award 2007 (Winner) for the year 2007 in Physics.
Young Scientist Fellowship Award 2006: Selected for Andhra Pradesh State Council Science and Technology (APCOST) Young Scientist Fellowship Award for the year 2006.
Senior Research Fellowship (SRF) from Council for Scientific and Industrial Research (CSIR), Govt. of India. (2006)
Senior Research Fellowship (SRF) in Defence Research & Development Organization (DRDO) sponsored research project. (2004 - 2005).
Junior Research Fellowship (JRF) in Defence Research & Development Organization (DRDO) sponsored research project. (2002 - 2004).
Details of significant paper publications :
1. High spectral response heteroleptic ruthenium (II) complexes as sensitizers for dye sensitized solar cells.
Journal of Chemical Sciences, Vol:123, No: 1, (2011)37-46
2. A-site substitution controlled dielectric dispersion in lead free sodium bismuth titanate.
Journal of Physics, Pramana, Vol:72, No:6, (2009) 999-1009.
3. Durable unsymmetrical zinc phthalocyanines for near IR sensitization of nanocrystalline TiO2 films.
Journal of Nano Research, Vol: 2, (2008) 39-48.
4. Functionalized Zinc Porphyrin as Light Harvester in Dye Sensitized Solar Cells.
Journal of Chemical Sciences, Vol:120, No: 5, (2008)455-462.
5. Preparation, Characterization, Conductivity and Thermal Expansion studies of Ca0.5SbMP3O12 (M = Al, Fe, Cr).
Journal of Materials Science, Vol: 42, (2007) 3613-3620.
6. Preparation, Characterization and Impedance Studies on LiSbM(PO4)3(M=Al, Fe, Cr).
Journal of Applied Physics, Vol: 100, (2006) 083707.
7. Modification of dielectric relaxations in Sodium Bismuth Titanate with samarium doping.
Journal of Physics and Chemistry of Solids., Vol: 67, Issue: 8 (2006) 1803-1808.
8. Electromechanical characterization of lanthanum doped sodium bismuth titanate ceramics.
Modern Physics Letters B, Vol: 20, No. 9 (2006) 475-480.
9. Electrical properties of La – modified strontium bismuth titanate.
Indian Journal of Pure & Applied Physics, Vol: 44 (2006) 46-51.
10. Dispersion of relaxation times in impedance measurements of Na1-xKxNbO3 mixed ceramic.
Ferroelectrics, Vol: 324 (2005) 43-47.
11. Effect of partial replacement of Bi on electrical properties of layered structured strontium bismuth titanate.
Ferroelectrics, Vol: 324 (2005) 145-151.
12. Preparation, Characterization and impedance study of AgTaMP3O12 (M = Al, Ga, In, Cr, Fe and Y).
Solid State Ionics, Vol: 176 (2005) 2701-2710.

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