[1] Seoul Natl Univ, Dept Mat Sci & Engn, Hybrid Mat Program WCU, Seoul 151744, South Korea
[2] Korea Adv Nano Fab Ctr, Suwon 443270, Gyeonggi, South Korea
[3] Hanyang Univ, Dept Elect Engn, Seoul 133791, South Korea
[4] Korea Inst Sci & Technol, Nanophoton Res Ctr, Seoul 136791, South Korea
[5] Seoul Natl Univ, Dept Nano Sci & Technol, Grad Sch Convergence Sci & Technol, Suwon 443270, South Korea
[6] Seoul Natl Univ, Energy Semicond Res Ctr, Adv Inst Convergence Technol, Suwon 443270, South Korea