Journal Article carbon nanotubes chemical vapor deposition 2D materials MXene photodetectors MXenes WSe2 carbon nanotube thin films charge‐coupling effect chemical vapor deposition, monolayers dynamic detection flexible flexible electronics floating-gate devices grain structure gradients graphene image sensor arrays integrated circuits machine vision metal-free optical sensing and memory phototransistor scale-up selective synthesis static detection substrates thin-film transistors transparent ultrafast growth wafer-scale patterning technology