1. School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
2. Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
3. Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
4. School of Electrical and Computer Engineering, Center for Organic Photonics and Electronics (COPE), Georgia Institute of Technology, Atlanta, Georgia 30332, United States
5. Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
6. Materials Science and Engineering Program, University of Colorado Boulder, Boulder, Colorado 80303, United States
7. Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80303, United States