High electrical conductivity and breakdown current density of individual monolayer Ti3C2Tx MXene flakes

As the scaling down of integrated circuits continues, there is a growing interest in electrically conductive materials with high current-carrying capacity for next-generation on-chip interconnects. Here, we report very high breakdown current density in Ti3C2Tx MXene, an emerging two-dimensional material. We performed electrical measurements of individual high-quality monolayer Ti3C2Tx flakes, which were prepared by an improved synthesis method, and found that they exhibit electrical conductivities of up to 11,000 S cm(-1) and field-effect electron mobilities of up to 6 cm(2) V-1 s(-1), both representing the best values reported for Ti3C2Tx flakes so far. All flakes exhibited very similar breakdown current densities of about 1.2 x 10(8) A cm(2), which are comparable with the best two-dimensional materials, including graphene, The remarkable combination of high electrical conductivity and high current-carrying capacity makes Ti3C2Tx promising for nanometer-thin interconnects and warrants investigation of breakdown current densities of other materials from the large MXene family.

Automated summary

This study reports the high breakdown current density in Ti3C2Tx MXene and demonstrates its high electrical conductivity and electron mobility, making it suitable for nanometer-thin interconnects. The breakdown current density of this material is comparable to other two-dimensional materials, highlighting its potential for future applications.