1. Department of Materials Science
and Engineering, University of Washington, Seattle, Washington, United States
2. School of Chemistry and Chemical
Engineering, Southeast University, Jiangning
District, Nanjing, Jiangsu Province, P.R. China
3. Department of Photonics & Display Institute, National Chiao Tung University, Hsinchu 30010, Taiwan
4. Department of Chemistry, University of Washington, P.O. Box 351700, Seattle,
Washington 98195, United States