1. Department of Physics and Astronomy, Wright Center for Photovoltaics Innovation and Commercialization, University of Toledo, 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
2. NASA Glenn Research Center, 21000 Brookpark Rd, Cleveland, Ohio 44135, United States
3. Naval Research Laboratory, 4555 Overlook Avenue S.W., Washington, DC 20375, United States