A physical model for quantum wire infrared photodetectors under illumination condition

In this paper, a theoretical study of quantum wires infrared photodetector (QRIP) under the illumination condition is presented. Here, an analytical approach is developed to calculate the average number of electrons in a quantum wire under illumination condition. Base on the presented formula, a simple mathematical formulation for the QRIP photocurrent is achieved. To show the accuracy of the model, the presented theoretical method is compared with the model reported in the previous literature. Then, QRIP photocurrent behavior over variations of the main important device parameters is investigated. •An analytical mathematical expression to find the photocurrent in a QRIP is developed.•The model calculates the photocurrent in a QRIP without needing a specific numerical method to solve the equation.•This model considers impact of structural factors and operational parameters on the photocurrent of QRIP.