1. Department of Physics and Astronomy Rutgers University Piscataway NJ 08854 USA
2. School of Materials Science and Engineering & Engineering Research Institute Gyeongsang National University Jinju 52828 Korea
3. Division of Physical Sciences and Engineering and KAUST Solar Centre King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
4. Department of Electrical Engineering Princeton University Princeton NJ 08544 USA
5. Department of Physics and Centre for Plastic Electronics Imperial College London South Kensington London SW7 2AZ UK
6. Sara and Moshe Zisapel Nano‐Electronic Center Department of Electrical Engineering Technion Israel Institute of Technology Haifa 3200 Israel
7. Department of Chemistry and Centre for Plastic Electronics Imperial College London South Kensington London SW7 2AZ UK
8. Center for Advanced Soft Electronics & Department of Chemical Engineering Pohang University of Science and Technology (POSTECH) Pohang 37673 Korea
9. Andlinger Center for Energy and the Environment Princeton University Princeton NJ 08544 USA