2D-PRINTABLE publication on ultrafast charge and energy transfer in plasmonic MXene-TMD Heterostructures

Our 2D-PRINTABLE partner TUD has recently published an article titled: Interface-Tailored Secondary Excitation and Ultrafast Charge/Energy Transfer in Ti₃C₂T_x-MoS₂ Heterostructure Films in Journal of the American Chemical Society.

This study investigates an ultrafast charge and energy transfer process in heterostructure films composed of macro-scale Ti₃C₂T_x and MoS₂ films. Using Rayleigh–Bénard convection and Marangoni effect-induced self-assembly, large-scale Ti₃C₂T_x and MoS₂ films composed of edge-connected monolayer nanoflakes were fabricated. In the Ti₃C₂T_x-MoS₂ heterostructure, we observe a secondary excitation in MoS₂ driven by the surface plasmon resonance of Ti₃C₂T_x. Tailoring the interface structure extended the characteristic time to ~175 ps.  Furthermore, our partners identified a sub-150 fs ultrafast charge/energy transfer process from Ti₃C₂T_x to MoS₂. The transfer efficiency is strongly dependent on the excitation photon energy, resulting in amplified photoconductivity in MoS₂ by up to ∼180% under 3.10 eV excitation.

This study advances our comprehension of photogenerated carrier dynamics in the Ti₃C₂T_x-MoS₂ heterostructure and presents promising strategies for controlling excited-state lifetimes in MoS₂, which is expected to impact the advancement of their photochemical and optoelectronic applications.

Huge congratulations to the 2D-PRINTABLE consortium and the team at TUD on this fantastic achievement!

Read all 2D-PRINTABLE publications here.