Performance Analysis of WSe₂ and MXene Nanocomposite-Based Flexible Photodetector

This article describes a broadband photodetector based on a PET substrate covered with ITO/ WSe<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{\mathbf {2}}$ </tex-math></inline-formula>: MXene/Al. The dispersion-prepared WSe<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{\mathbf {2}}$ </tex-math></inline-formula>: MXene nanocomposite (NC) serves as the active layer in the device. The nanocomposite film was deposited over ITO-coated PET using the spin coating technique, and the Al contacts were subsequently deposited using thermal evaporation unit. At 300 nm (UV), 750 nm (visible), and 800 nm (IR), the manufactured photodetector exhibits a broadband response with maximum responsivity (A/W) of 77.5 A/W, 1230 A/W, and 1253.17 A/W for 1V bias at a fixed optical power of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$0.118~\mu $ </tex-math></inline-formula>W. The WSe<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{\mathbf {2}}$ </tex-math></inline-formula>: MXene nanocomposite shows interesting features for optoelectronic applications.