1. Center for Nano-Photonics Convergence Technology, Korea Institute of Industrial Technology (KITECH), Gwangju 61012, Republic of Korea
2. Department of Display Engineering, Pukyong National University, Busan 48513, Republic of Korea
3. School of Electronics Engineering, Chungbuk National University, Cheongju 28644, Republic of Korea
4. Department of Electronics Engineering, Sookmyung Women’s University, Seoul 04312, Republic of Korea
5. School of Electrical Engineering, KAIST, Daejeon 34141, Republic of Korea