Improved Sensing Properties of Amino Acid on Black Phosphorene: A Computational Study

Black phosphorene (BP) is a potential material for high performance sensor application. In this study, the sensing properties of amino acid on metal doped black phosphorene are investigated through simulation. The effect of amino acid adsorption on energy bandgap and density of state (DOS) are evaluated. Ultimately the sensing properties including the adsorption energy, charge transfer and sensitivity are obtained comparing three metal doped on BP namely, Lithium, Aluminum and Chromium. From the simulation, it is found that markable decrease in energy bandgap by 60% is achieve for chromium doped BP upon binding with amino acid. Furthermore, the marked changes in current obtained for amino acid on chromium doped BP outperform those of pristine BP counterpart. This indicates BP is feasible to be used for biosensor application and suggest that it is possible to enhance the sensing performance with metal doping.