1. Advanced Technology Institute Department of Electrical and Electronic Engineering University of Surrey Guildford Surrey GU2 7XH UK
2. Department of Chemistry and Centre for Processable Electronics Imperial College London London W12 0BZ UK
3. State Centre for International Cooperation on Designer Low‐Carbon & Environmental Materials (CDLCEM) School of Materials Science and Engineering Zhangzhou University Henan 450001 China
4. School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
5. London Centre for Energy Engineering School of Engineering London South Bank University London SE1 0AA UK
6. Fluxim AG Winterthur 8400 Switzerland
7. Advanced Technology Institute Department of Physics University of Surrey Guildford Surrey Gu2 7XH UK
8. Department of Chemistry University College London London WC1H 0AJ UK