1. Department of Chemistry, Fu Jen Catholic University, New Taipei City 24205, Taiwan
2. Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
3. National Synchrotron Radiation Research Center, Hsinchu Science Park, Hsinchu 300092, Taiwan
4. Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
5. Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, California 94720, United States
6. Department of Chemical Engineering & College of Semiconductor Research, National Tsing Hua University, Hsinchu 300044, Taiwan