1. Department of Physics and Astronomy
2. Wright Center for Photovoltaics Innovation and Commercialization
3. The University of Toledo
4. Toledo
5. USA
6. Institute of Advanced Materials
7. Key Laboratory for Organic Electronics & Information Displays
8. Nanjing University of Posts & Telecommunications
9. Nanjing 210023
10. P. R. China
11. Chemistry and Nanoscience Center
12. National Renewable Energy Laboratory
13. Golden