1. The Organic Photonics and Electronics Group Umeå University Umeå SE‐90187 Sweden
2. LunaLEC AB Umeå University Umeå SE‐90187 Sweden
3. RISE Energy Technology Center AB Industrigatan 1 Piteå SE‐941 38 Sweden
4. Department of Chemistry − Ångström Laboratory Uppsala University Uppsala SE‐751 21 Sweden