1. Department of Electrical Engineering, Yuan Ze University, Chung-Li 32003, Taiwan
2. College of Photonics, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan
3. Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi Unversity of Technology, New Taipei 24301, Taiwan
4. Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan