1. College of Chemistry and Environmental Engineering
2. Shenzhen University
3. Shenzhen 518060
4. P. R. China
5. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province
6. Nanophotonics Research Center
7. Institute of Microscale Optoelectronics
8. Hanshan Normal University
9. Chaozhou 521041