Qualification: 
Ph.D, MSc
d_praveen@blr.amrita.edu
Phone: 
9902826208

Dr. D. Praveen currently serves as Assistant Professor at department of Physics, Amrita School of Engineering, Banglore campus. His areas of research include Electrolyte and Electrode materials for ion batteries, Multi-Junction Solar Cells, AGNs.

Qualification

Year Degree Name of the university
2013-14 Ph.D Bangalore University

Projects

Publications

Publication Type: Conference Paper

Year of Publication Publication Type Title

2017

Conference Paper

T. Deepak, Nair, A. S., Singh, F., and Dr. D. Praveen, “Enhanced photoelectrochemical performance of TiO2 electrodes of DSSCs irradiated with 80MeV O6+ ion”, in AIP Conference Proceedings, 2017, vol. 1832.[Abstract]


The work reports the effect of 80MeV 6+ Oxygen ion irradiation on the performance of DSSCs. TiO2 coated FTO were subjected to ion irradiation of fluences 1 × 1012 to 1 × 1014 ions/cm2. TiO2 coated FTOs were characterized with XRD for structural analysis and have shown anatase phase. Irradiated films were used as electrodes for DSSCs. We have observed that the irradiated light conversion efficiency of the cells was highest for fluence of 1 × 1013ions/cm2 and at the same fluence the cell parameters showed to be the best. The reason may be due to the surface modification of the TiO2 coated films due to irradiation. However lower fluences than 1 × 1013 ions/cm2 show less effect while higher fluence shown degrading effect on the cell performance which may be due to the worsening of contact between electrode and dyes. © 2017 Author(s).

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2016

Conference Paper

Dr. D. Praveen and Damle, R., “Enhancement in ionic conductivity on solid polymer electrolytes containing large conducting species”, in DAE-SSPS-2015, 2016.

Publication Type: Journal Article

Year of Publication Publication Type Title

2016

Journal Article

N. Sukanya, Stalin, C. S., Jeyakumar, S., Dr. D. Praveen, Dhani, A., and Damle, R., “Long-term optical flux and colour variability in quasars”, Research in Astronomy and Astrophysics, vol. 16, p. 007, 2016.

2013

Journal Article

Dr. D. Praveen, Bhat, S. Vb, and Damle, Rc, “Role of silica nanoparticles in conductivity enhancement of nanocomposite solid polymer electrolytes: (PEGx NaBr): YSiO2”, Ionics, vol. 19, pp. 1375-1379, 2013.[Abstract]


Nanocomposite solid polymer electrolytes (NCSPEs) with conducting species other than Li ions are being investigated for solid-state battery applications. Pristine solid polymer electrolytes (SPEs) do not show ionic conductivity suitable for batteries. Addition of inert fillers to SPEs is known to enhance the ionic conductivity. In this paper, we present the role of silica nanoparticles in enhancing the ionic conductivity in NCSPEs with sodium as conducting species. Sodium bromide is complexed with the host polyethylene glycol polymer by solution cast method and silica nanoparticles (SiO2, average particle size 7 nm) are incorporated into the complex in small amounts. The composites are characterized by powder XRD and IR spectroscopy. Conductivity measurements are undertaken as a function of concentration of salt and also as a function of temperature using impedance spectroscopy. Addition of silica nanoparticles shows an enhancement in conductivity by 1-2 orders of magnitude. The results are discussed in terms of interaction of nanoparticles with the nonconducting anions. © 2013 Springer-Verlag Berlin Heidelberg.

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2011

Journal Article

Dr. D. Praveen, Bhat, S. V., and Damle, R., “Enhanced ionic conductivity in nano-composite solid polymer electrolyte:(PEG) x LiBr: y (SiO2)”, Ionics, vol. 17, pp. 21–27, 2011.

207
PROGRAMS
OFFERED
5
AMRITA
CAMPUSES
15
CONSTITUENT
SCHOOLS
A
GRADE BY
NAAC, MHRD
8th
RANK(INDIA):
NIRF 2018
150+
INTERNATIONAL
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