1. Department of Physics, University of Washington, Seattle, Washington
98195-1560, United States
2. Department of Chemistry and
Biochemistry, University of Arizona, Tucson,
Arizona 85721, United States
3. Department of Chemistry, University of Washington, Seattle, Washington
98195-1700, United States
4. School of Chemistry and Biochemistry
and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400,
United States
5. Department
of Physics and Astronomy, University of Denver, Denver, Colorado 80208, United
States
6. National Renewable Energy Laboratory, Golden, Colorado 80401, United States
7. Stanford Synchrotron Radiation Lightsource, 2575 Sand Hill Road MS69, Menlo
Park, California 94025, United States