New study opens the door to ultrafast 2D devices that use nonequilibrium exciton superdiffusion

https://phys.org/news/2023-02-door-ultrafast-2d-devices-nonequilibrium.html

"ultrafast motion of nonequilibrium exciton in monolayers WSe2, MoWSe2, and MoSe2, immediately after excited with femtosecond laser with pump-probe microscope...  excitons travel 200 nm within 1 ps... superdiffusion is when exciton diffuses much faster than expected at early time... expected to break the traditional limitation of photovoltaic efficiency, or could be used for ultrafast electronic devices due to its nature of ultrashort time scales of up to 102—103 cm2 s−1"