Performance Analysis of AlGaN MOSHEMT Based Biosensors for Detection of Proteins

Proteins are existing in different condensations in samples of various origins and knowing their focus is especially important as there are different techniques to detect them [ 1 ]. In this work, AlGaN metal-oxide-semiconductor high-electron-mobility transistor (MOSHEMT) based biosensors has been presented for rapid detection of specific proteins such as dry, albumin, casein and zein, each one has related it by the value of permittivity that effects the electrical performance of biosensors which can be used as a sensing metric to detect different proteins. The simulation results have been obtained with atlas-technology computer aided design (Atlas-TCAD) device simulation tool and the sensor performance parameters analysis to detect proteins was performed through drain current, transconductance, output conductance, gate-to-drain capacitance, and sensitivity. The AlGaN MOSHEMT based biosensors have been optimized, to improve the biosensor sensitivity. The maximum sensitivity obtained is 82.5% for zein protein detection compared to other proteins which are 65.11% for casein, 55.81% for albumin and 52.32% for dry.