As a rising star in the family of two-dimensional (2D) materials, black phosphorus (BP) has recently attracted tremendous attention all over the world and demonstrated great potential in energy applications owing to its direct and narrow bandgap, high carrier mobility and theoretical capacity, as well as anisotropic structure. Solution exfoliation of BP reveals superior advances when compared with mechanical exfoliation [1]. Remarkably, liquid-phase exfoliated BP flakes and quantum dots (QDs) exhibit exciting properties in batteries, solar cells, electronic, and optical devices. The exfoliation of BP in diverse solvents have been demonstrated. The solution exfoliated BP flakes can be an effective electron transport layer in organic photovoltaics (OPVs) [2]. The BP QDs can be incorporated in the active layer of OPV to boost its power conversion efficiencies [3]. Furthermore, it can also enhance the performance of Li-S batteries significantly [4].

Biography: 

Shu Ping Lau is a Chair Professor and Head of Department of Applied Physics at the Hong Kong Polytechnic University. He is also the Director of the University Research Facility on Materials Characterization and Device Fabrication. He obtained his Ph.D. degree in Materials Engineering from the University of Swansea. He has served as guest editor of 6 journals and published 4 invited book chapters, as well as over 340 international refereed papers. His current research interest includes in two-dimensional materials such as transition metal dichalcogenides and black phosphorous.