1. Department of Materials Science and Engineering; Monash University; Victoria 3800 Australia
2. Department of Chemistry; University of California, Berkeley; Berkeley CA 94720 USA
3. Chemical Sciences Division; Lawrence Berkeley National Laboratory; Berkeley CA 94720 USA
4. Materials Sciences Division; Lawrence Berkeley National Laboratory; Berkeley CA 94720 USA
5. Department of Chemistry; Texas A&M University; College Station TX 77840 USA
6. School of Physics and Monash Centre for Atomically Thin Materials; Monash University; Victoria 3800 Australia
7. Center for Nanophysics and Advanced Materials; University of Maryland; College Park MD 20742-4111 USA
8. CSIRO; Clayton South Victoria 3169 Australia
9. Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO); CNR-ISTM; Via Elce di Sotto 8 I-06123 Perugia Italy
10. CompuNet; Istituto Italiano di Tecnologia; Via Morego 30 16163 Genova Italy
11. Department of Molecular and Cell Biology; University of California, Berkeley; Berkeley CA 94720 USA
12. Howard Hughes Medical Institute; University of California, Berkeley; Berkeley CA 94720 USA
13. Department of Chemical and Biomolecular Engineering; University of California, Berkeley; Berkeley CA 94720 USA
14. School of Chemistry; Monash University; Victoria 3800 Australia