1. Department of Chemistry University of North Carolina at Chapel Hill Chapel Hill NC 27599 USA
2. University program in Materials Science and Engineering Duke University Durham North Carolina 27708 USA
3. Department of Mechanical Engineering and Materials Science Duke University Durham NC 27708 USA
4. Department of Chemistry Duke University Durham NC 27708 USA
5. Center for Hybrid Organic Inorganic Semiconductors for Energy Golden CO 80401 USA
6. Materials, Chemistry, and Computation Science Directorate National Renewable Energy Laboratory Golden CO 80401 USA
7. Department of Physics Colorado School of Mines Golden CO 80401 USA