1. Department of Materials Science and Engineering and Organic and Carbon Electronics Laboratories (ORaCEL), North Carolina State University, Raleigh, North Carolina 27695, United States
2. Materials Science and Engineering Program, University of Colorado Boulder, 4001 Discovery Drive, Boulder, Colorado 80303, United States
3. Department of Physics and Organic and Carbon Electronics Laboratories (ORaCEL), North Carolina State University, Raleigh, North Carolina 27695, United States
4. National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11873, United States
5. Renewable and Sustainable Energy Institute (RASEI), University of Colorado Boulder, 4001 Discovery Drive, Boulder, Colorado 80303, United States
6. Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States