1. School of Engineering Macquarie University Sustainable Energy Research Centre Macquarie University Sydney NSW 2109 Australia
2. School of Materials Science and Engineering University of New South Wales (UNSW) Sydney NSW 2052 Australia
3. School of Photovoltaic and Renewable Energy Engineering University of New South Wales (UNSW) Sydney NSW 2052 Australia
4. Departament de Física Universitat Politècnica de Catalunya Campus Nord B4‐B5 Barcelona E‐08034 Spain
5. Electron Microscope Unit Mark Wainwright Analytical Centre University of New South Wales (UNSW) Sydney NSW 2052 Australia
6. School of Chemistry and Chemical Engineering Henan Institute of Science and Technology Xinxiang Henan 453003 P. R. China
7. Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon‐Based Functional Materials and Devices Joint International Research Laboratory of Carbon‐Based Functional Materials and Devices Soochow University 199 Ren‐Ai Road, Suzhou Industrial Park Suzhou Jiangsu 215123 P. R. China