1. The CUNY Energy Institute, City University of New York, 160 Convent Ave, New York, NY 10031, USA
2. Urban Electric Power, Pearl River, NY 10965, USA
3. Sandia National Laboratories, Department of Photovoltaics and Materials Technology, Albuquerque, NM 87185, USA
4. Sandia National Laboratories, Center of Integrated Nanotechnologies, Albuquerque, NM 87185, USA