1. Chang Gung University, Graduate Institute of Electro-Optical Engineering, No. 259, Wenhua 1st Road, Kwei-shan District, Taoyuan 333, TaiwanbInstitute of Chemistry, Academic Sinica, No. 128, Section 2, Academia Road, Nankang District, Taipei 115, Taiwan
2. Chang Gung University, Graduate Institute of Electro-Optical Engineering, No. 259, Wenhua 1st Road, Kwei-shan District, Taoyuan 333, Taiwan