najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2020-11-1-117-122najo-474Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХMicrowave synthesis and studies room temperature optical properties of LaF3: Ce3+, Pr3+, Nd3+ nanocrystalsGaurkhedeSidheshwar G.

Andheri (W) Mumbai – 400058

s.gaurkhede@gmail.comDepartment of Physics, Bhavan’s College of ScienceIndia202031072025111117–122Copyright © Gaurkhede S.G., 20252025Gaurkhede S.G.Gaurkhede S.G.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/474

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.

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The authors declare that there are no conflicts of interest present.