1. School of Physics, Bharathidasan University, Tiruchirappalli – 620 024, India;
2. Department of Chemistry, Siddaganga Institute of Technology, Tumakuru- 572 103, India;
3. Department of Physics, Jaya College of Arts and Science, Chennai - 602 024, India;
4. Department of Chemistry, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, 76018, Ukraine;
5. Educational and Scientific Center of Materials Science and Nanotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine