1. Photon Science Institute and School of Electrical and Electronic EngineeringThe University of Manchester Manchester M13 9PL UK
2. Photovoltaic & Renewable Energy EngineeringTyree Energy Technologies Building UNSW Sydney NSW 2052 Australia
3. Department of Physics and I3NUniversity of Aveiro Campus Santiago Aveiro 3810-193 Portugal
4. Scientific-Practical Materials Research Center of NAS of Belarus Minsk 220072 Belarus