Design and analysis of MoTe2-based efficient photonic devices for the solar cell and photodetector applications

Abstract

A systematic survey and subsequent research have been made on MoTe2-based n-CdS/p-MoTe2/p+-CGS device in solar cell and photodetector field. The optimization has been established by altering the various properties of each constituent layer through numerical computation. The performance of the MoTe2 photonic device has been probed with and without CGS back surface field (BSF) layer in details. The proposed n-CdS/p-MoTe2/p+-CGS photonic device exhibits markedly improved cell efficiency, {\eta} of 32.92 % with VOC of 0.97 V, JSC of 41.21 mA/cm2, FF of 82.73% and responsivity, R of 0.74 A/W as well as detectivity, D* of 2.36x1016 Jones at a wavelength of 1000 nm. These simulation outcomes reveal the strong potential of MoTe2 absorber along with the novel and improved structure for highly-efficient solar cells and photosensors that capable of high detection capability.