1. Engineering Department, Lancaster University, Lancaster LA1 4YR, United Kingdom
2. Department of Physics, Lancaster University, Lancaster LA1 4YB, United Kingdom
3. Physics Department, Aristotle University of Thessaloniki, Thessaloniki 54142, Greece
4. Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
5. Display Research Laboratory, Department of Information Display, Kyung Hee University, Seoul 130701, South Korea