1. Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
2. Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
3. SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
4. Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
5. National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States