Vol. 4 (01) pp. 1329-1337

Synthesis and Optical Studies of La1.1Ti1-xWx(O,N)3 Prepared by Sol-Gel Methodology.

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  • Graduate School of Advanced Technology and Science, Tokushima University, 2-1 Minami-Josanjima, Tokushima 770-8506, Japan.
  • School of Chemical Sciences, The University of Auckland, Private Bag 92019, New Zealand.
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Abstract

Perovskite-type oxynitride having general formula La1.1(Ti1-x,Wx)(O,N)3 with different compositions (X = 0.01,0.02,0.03,0.04,0.05) were synthesized by a thermal ammonolysis of oxide precursors prepared via a sol-gel method. The products formed with different composition were systematically characterized by XRD, SEM-EDS, particle size distribution analysis, UV-vis and oxygen/nitrogen analysis. Scanning electron microscopy (SEM) showed morphological changes of the microstructure with increasing tungsten content. UV-visible reflectance spectra showed that absorption edge wavelengths of the oxynitrides were in the range of 545nm – 575 nm, corresponding to the bandgap energy of 2.28eV – 2.16eV. Among all La1.1(Ti1-x,Wx)(O,N)3 compositions (X = 0.03) showed the highest redshift with decreasing band gap.

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How to Cite This Article

Narendra G. Sarda, Takanori Hayashi, Andrew Chan, Yuta Takeuchi, Kyosuke Harada, Kei-Ichiro Murai, Geoffrey I.N. Waterhouse, Toshihiro Moriga (2016); Synthesis and Optical Studies of La1.1Ti1-xWx(O,N)3 Prepared by Sol-Gel Methodology., Int. J. of Adv. Res., 4 (01), 1329-1337, ISSN 2320-5407.

Corresponding Author

Narendra Girish Sarda

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