1. School of Chemistry and Physics Science and Engineering Faculty Queensland University of Technology Brisbane QLD 4000 Australia
2. Department of Advanced Materials Science School of Frontier Sciences The University of Tokyo 5‐1‐5 Kashiwanoha Kashiwa Chiba 277‐8561 Japan
3. Centre Énergie Matériaux Télécommunications Institut National de la Recherche Scientifique 1650 boulevard Lionel‐Boulet Varennes QC J3X 1S2 Canada
4. Department of Mechanical Engineering Faculty of Engineering National University of Singapore Block EA #07‐08, 9 Engineering Drive 1 Singapore 117576 Singapore
5. Department of Physics Organic and Carbon Electronics Lab (ORaCEL) North Carolina State University Raleigh NC 27695 USA
6. CSIRO Energy Centre 10 Murray Dwyer Circuit Mayfield West NSW 2304 Australia
7. Centre for Organic Electronics University of Newcastle Callaghan NSW 2308 Australia
8. Centre for Materials Science Queensland University of Technology Brisbane QLD 4000 Australia