[1] Shizuoka Univ, Grad Sch Sci & Technol, Naka ku, 3-5-1 Johoku, Hamamatsu, Shizuoka 4328011, Japan
[2] Shizuoka Univ, Res Inst Elect, Naka ku, 3-5-1 Johoku, Hamamatsu, Shizuoka 4328011, Japan
[3] Dongguk Univ Seoul, Dept Semicond Sci, Seoul 04620, South Korea
[4] SRM Univ, Ctr Mat Sci & Nano Devices, Dept Phys & Nanotechnol, Kancheepuram 603203, Tamil Nadu, India