1. Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
2. Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072 China
3. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
4. The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, United Kingdom
5. Neaspec GmbH, Eglfinger Weg 2, Haar, 85540, Munich Germany
6. Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 München, Germany
7. Institute of Molecular Plus, Tianjin University, Tianjin, 300072 China
8. Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China