1. Organic Bioelectronics Laboratory Biological and Environmental Science and Engineering King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
2. Division of Physical Sciences and Engineering KAUST Solar Center (KSC) King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
3. Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA
4. Department of Chemistry Imperial College London London SW72AZ UK