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Synthesis and characterization of spherical and rod like nanocrystalline Nd2O3 phosphors |
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| Authors: | B Umesh B EraiahH Nagabhushana BM NagabhushanaG Nagaraja C ShivakumaraRPS Chakradhar |
| Affiliation: | a Department of Humanities, PVP Polytechnic, Dr. AIT Campus, Bangalore 560056, India b Department of Physics, Bangalore University, Bangalore 560 056, India c Advanced Materials Research Laboratory, University college of Science, Tumkur University, Tumkur-572103, India d Department of Chemistry, M.S. Ramaiah Institute of Technology, Bangalore 560 054, India e Department of Inorganic & Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India f Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India g Glass Technology Laboratory, Central Glass and Ceramic Research Institute (CSIR), Kolkota 700032,India |
| Abstract: | Spherical and rod like nanocrystalline Nd2O3 phosphors have been prepared by solution combustion and hydrothermal methods respectively. The Powder X-ray diffraction (PXRD) results confirm that hexagonal A-type Nd2O3 has been obtained with calcination at 900 °C for 3 h and the lattice parameters have been evaluated by Rietveld refinement. Surface morphology of Nd2O3 phosphors show the formation of nanorods in hydrothermal synthesis whereas spherical particles in combustion method. TEM results also confirm the same. Raman studies show major peaks, which are assigned, to Fg and combination of Ag + Eg modes. The PL spectrum shows a series of emission bands at ∼326-373 nm (UV), 421-485 nm (blue), 529-542 nm (green) and 622 nm (red). The UV, blue, green and red emission in the PL spectrum indicates that Nd2O3 nanocrystals are promising for high performance materials and white light emitting diodes (LEDs). |
| Keywords: | Phosphors Nd2O3: SEM TEM Raman XRD Optical properties |
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