1. Shenzhen Engineering Laboratory of Phosphorene and OptoelectronicsSZU-NUS Collaborative Innovation Center for Optoelectronic Science & TechnologyInternational Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationCollege of Physics and Optoelectronic EngineeringShenzhen University Shenzhen 518060 P. R. China
2. College of Health Science and Environmental EngineeringShenzhen Technology University Shenzhen 518118 P. R. China
3. Center for Stretchable Electronics and Nanoscale SystemsKey Laboratory of Optoelectronic Devices and Systems of Ministry of EducationCollege of Physics and Optoelectronic EngineeringShenzhen University Shenzhen 518060 P. R. China