Protective Molecular Passivation of Black Phosphorus

David Wang Auditorium, 3rd floor Dalia Maydan Bldg.
Prof. Doron Naveh

Prof. Doron Naveh, Faculty of Engineering, Bar-Ilan University

BlackPhosBlack phosphorus (BP) is one of the most fascinating layered materials, bearing extraordinary mechanical, optical and electronic properties. However, the sensitivity of BP to oxygen and humidity puts great challenges in technological applications of this unique material. In this talk, the properties and device applications of black phosphorus will be reviewed with a comprehensive discussion on our organic passivation. Our solution to overcome degradation in few-layer BP by passivating the surface with self-assembled monolayers of octadecyltrichlorosilane (OTS) that provide long-term stability in ambient conditions. Importantly, we show that this treatment does not cause any undesired carrier doping of the bulk channel material, thanks to the emergent hierarchical interface structure. Our approach is compatible with conventional electronic materials processing technologies thus providing an immediate route toward practical applications in BP devices.