1. Department
of Chemistry, University of California at Berkeley, Berkeley, California 94720, United States
2. Department
of Physics, University of California at Berkeley, Berkeley, California 94720, United States
3. Laboratory
for Computational and Theoretical Chemistry of Advanced Materials,
Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
4. Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
5. Department
of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
6. Shanghai Key Laboratory of Functional Materials Chemistry and School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
7. School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332-0400, United States
8. Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
9. Kavli Energy NanoSciences Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States