[1] Natl Taiwan Univ, Ctr Condensed Mat Sci, Taipei 106, Taiwan
[2] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan
[3] Natl Yang Ming Univ, Inst Biophoton Engn, Taipei 112, Taiwan
[4] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei 106, Taiwan
[5] Natl Taiwan Ocean Univ, Inst Optoelect Sci, Chilung 20224, Taiwan
[6] Natl Taiwan Univ, Grad Inst Photon & Optoelect, Taipei 106, Taiwan
[7] Natl Taiwan Univ, Dept Elect Engn, Taipei 106, Taiwan