Affiliation: | 1. Department of Physics and Centre for Plastic Electronics, Imperial College London, Blackett Laboratory, London, SW7 2BW (United Kingdom);2. Department of Physics, Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom);3. University of Surrey, Advanced Technology Institute, Guildford GU2 7XH (United Kingdom);4. Department of Materials and Centre for Plastic Electronics, Imperial College London, London Royal School of Mines, London, SW7 2AZ (United Kingdom) |