Influence of Mn2+ Substitution on the Optical Properties of Novel CaLi2O2 Nanoparticles Synthesized by Sol-gel Method

Автор(ы) A. Kadari1, A. Azaiz2, N. Mokhtari1, D. Horri1
Принадлежность

1Engineering Physics Laboratory, University of Tiaret, Algeria

2Synthesis and Catalysis Laboratory, University of Tiaret, Algeria

Е-mail kadariahmed_14@yahoo.fr
Выпуск Том 12, Год 2020, Номер 6
Даты Received 14August 2020; revised manuscript received 15 December 2020; published online 25 December 2020
Ссылка A. Kadari, A. Azaiz, et al., J. Nano- Electron. Phys. 12 No 6, 06009 (2020)
DOI https://doi.org/10.21272/jnep.12(6).06009
PACS Number(s) 81.20.Fw, 82.33.Ln
Ключевые слова Sol-gel (15) , CaLi2O2, Mn2+ doping, Band gap (27) .
Аннотация

A novel calcium lithium composite oxide CaLi2O2 nanoparticle has been successfully synthesized by using sol-gel method. The objective of the present work is to examine the change of optical properties with the change of Mn2+ ion concentration in CaLi2O2 nanoparticles. The novelty of this study is the synthesis of Mn-doped CaLi2O2 nanoparticles. In order to investigate their physical properties the resulting samples in powder form were thermally treated at 300 °C and then characterized by powder X-ray diffraction (XRD), UV-Visible (UV-Vis) spectroscopy and Fourier Transform Infrared spectroscopy (FT-IR). The XRD patterns show that the crystalline structure has been changed with the change of Mn2+ ion concentration in CaLi2O2 lattice. The incorporation of manganese atoms into CaLi2O2 has been confirmed by the FT-IR spectroscopy. This may be explained by the apparition of some absorption bands in the wavenumber range from 584 to 601 cm – 1. The particles size decreases from 463 Ǻ to 117 Ǻ. The band gap values were tuned from 3.769 eV to 3.794 eV and discussed based on the quantum confinement effect.

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