1. Department of Solar Energy School of Technology Pandit Deendayal Petroleum University Gandhinagar 382 007 Gujarat India
2. Department of Science School of Technology Pandit Deendayal Petroleum University Gandhinagar 382 007 Gujarat India
3. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA 02139 USA
4. Department of Chemistry Faculty of Science King Khalid University Abha 61413, P.O. Box 9004 Saudi Arabia
5. Department of Chemical Engineering National Institute of Technology Rourkela 769008 India
6. Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland