1. Chair for Photonics and Optoelectronics
2. Nano-Institute Munich
3. Department of Physics
4. Ludwig-Maximilians-Universität (LMU)
5. 80539 Munich
6. Institute of Functional Nano and Soft Materials (FUNSOM)
7. Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
8. Soochow University
9. China
10. Istituto Italiano di Tecnologia
11. 16163 Genova
12. Italy