1. Chemistry and Material Science PhD Program, Lakehead University, Thunder Bay, Ontario, P7B 5E1, Canada
2. Thunder Bay Regional Research Institute, Thunder Bay, Ontario, P7A 7T1, Canada
3. Department of Physics and Material Sciences Centre, Philipps University Marburg, D-35032 Marburg, Germany
4. Department of Electrical Engineering, University of Saskatchewan, Saskatoon, SK, S7N 5A2, Canada
5. Physics Department, Lakehead University, Thunder Bay, Ontario, P7B 5E1, Canada