Bioinspired polypeptoids for the deterministic doping of semiconductors

Polymers are widely used in the field of electronics. To move in the way of nanoelectronics, polymers can be employed for the scaling down of transistors by modulating the doping of semiconductors. Many methodologies have been explored to precisely introduce impurities inside a semiconductor. Among them “monolayer doping holds a special position. In this methodology, the density of doping atoms is controlled by the steric hindrance of the carrier molecules containing the dopant atom. Even if polymers such as polystyrene and poly-(methyl methacrylate) with a terminal phosphate moiety and narrow dispersity, have been used to dope silicon substrates, the control of polydispersity is still a challenge. Bioinspired polypeptoids are promising for this application. Polypeptoids are synthesized by solid-phase sub-monomer synthesis. It allows for control of the unit sequence and therefore the molecular weight due to their unit-by-unit assembly mechanism, leading to monodisperse systems.