Microwave synthesis and studies room temperature optical properties of LaF3: Ce3+, Pr3+, Nd3+ nanocrystals
https://doi.org/10.17586/2220-8054-2020-11-1-117-122
Abstract
Lanthanum fluoride (LaF3:Ce3+, Pr3+, Nd3+) was synthesized by water soluble LaCl3 + CeCl3+ PrCl3 + NdCl3 and NH4F as starting materials in de-ionized water as solvent using microwave assisted technique. The structure of LaF3:Ce3+, Pr3+, Nd3+ nanocrystals analyzed by XRD and TEM analysis is found to be in hexagonal structure and average crystalline particle size is 20 nm (JCPDS standard card (32-0483) of pure hexagonal LaF3 crystals). The absorption edge in UV spectra is found at 250 nm corresponding to energy of 4.9 eV. It further shows a wide transparent window lying between 200 nm–800 nm. For LaF3; Ce3+, Pr3+, Nd3+ nanocrystals emission of blue color (458 nm) has been observed with at an excitation wavelength of 254 nm. The measured relative second harmonic generation (SHG) efficiency of LaF3: Ce3+, Pr3+, Nd3+ in de-ionized water with respect to KDP crystal is 0.186.
About the Author
Sidheshwar G. Gaurkhede
Department of Physics, Bhavan’s College of Science
India
India
Andheri (W) Mumbai – 400058
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Review
For citations:
Gaurkhede S.G. Microwave synthesis and studies room temperature optical properties of LaF3: Ce3+, Pr3+, Nd3+ nanocrystals. Nanosystems: Physics, Chemistry, Mathematics. 2020;11(1):117–122. https://doi.org/10.17586/2220-8054-2020-11-1-117-122
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