1. College of Material Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
2. State Key Laboratory
on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
3. Advanced Center
for Laser Science and Spectroscopy, Department of Physics, Hampton University, Hampton, Virginia 23668, United States
4. Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
5. Department of Chemistry and Physics, Louisiana State University, Shreveport, Louisiana 71115, United States