1. Institute of Microelectronics and Department of Electrical Engineering, Advanced Optoelectronic Technology Center, Research Center for Energy Technology and Strategy; National Cheng Kung University; Tainan 701 Taiwan
2. National Nano Device Laboratories; Tainan-based Science Park Tainan 741 Taiwan
3. Institute of Nuclear Energy Research, Atomic Energy Council; Luchu Science Park Kaohsiung 821 Taiwan