R
R.P.S. Chakradhar
Researcher at National Aerospace Laboratories
Publications - 168
Citations - 5159
R.P.S. Chakradhar is an academic researcher from National Aerospace Laboratories. The author has contributed to research in topics: Electron paramagnetic resonance & Photoluminescence. The author has an hindex of 36, co-authored 166 publications receiving 4423 citations. Previous affiliations of R.P.S. Chakradhar include Council of Scientific and Industrial Research & Indian Institute of Science.
Papers
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Luminescent characteristics of Eu3+ doped di-calcium silicate nano-powders for white LEDs
TL;DR: In this article, Nanocrystalline Ca 2 SiO 4 :Eu 3+ (1-5) phosphors have been prepared by solution combustion process using DFH as a fuel which is less temperature compared to solid state route.
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Photoluminescence and EPR studies of Cr-doped hibonite (CaAl12O19) phosphors
TL;DR: In this paper, the site symmetry around Cr 3+ ions is distorted octahedral as Cr 3 + ions substitute for Al 3+ sites and the number of spins participating in the resonance for g ǫ = 1.97 is measured as a function of temperature and the activation energy is calculated.
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EPR and photoluminescence studies of ZnO:Mn nanophosphors prepared by solution combustion route.
A. Jagannatha Reddy,M.K. Kokila,H. Nagabhushana,J.L. Rao,B.M. Nagabhushana,C. Shivakumara,R.P.S. Chakradhar +6 more
TL;DR: Nanocrystalline ZnO:Mn (0.1 mol%) phosphors have been successfully prepared by self propagating, gas producing solution combustion method and the spin-Hamiltonian parameters have been evaluated and discussed.
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Luminescence and EPR studies of Eu2+ doped BaAl12O19 blue light emitting phosphors
TL;DR: In this article, Europium doped BaAl 12 O 19 powder phosphors have been synthesized by combustion process within few minutes, and they have been characterized by XRD, SEM, FT-IR, EPR and PL techniques.
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EPR, optical absorption and photoluminescence properties of MnO2 doped 23B2O3–5ZnO–72Bi2O3 glasses
TL;DR: In this article, electron paramagnetic resonance (EPR), transmission electron microscopy (TEM), optical absorption and photoluminescence (PL) spectroscopic measurements are performed on Mn2+ doped high bismuth containing zinc-bismuth-borate glasses.