1. Department of Chemistry; Karnatak University; Dharwad India
2. Laser Spectroscopy Lab and UGC-CPEPA Programme; Department of Physics; Karnatak University; Dharwad India
3. Department of Electrical Engineering and Computer Science; Centre for Advanced Photovoltaics; South Dakota State University; Brookings SD USA
4. Department of Studies in Physics; University of Mysore; Mysore India
5. Department of Chemistry; Mangalore University; Mangalore India