Vertical ferroelectric field effect transistor constructions, constructions comprising a pair of vertical ferroelectric field effect transistors, vertical strings of ferroelectric field effect transistors, and vertical strings of laterally opposing pairs of vertical ferroelectric field effect transistors

A vertical string of laterally opposing pairs of vertical ferroelectric field effect transistors, comprising:

• alternating tiers of laterally opposing dielectric material and laterally opposing conductive gate material, the laterally opposing conductive gate material in individual of the tiers comprising a respective gate of one of a pair of laterally opposing vertical ferroelectric field effect transistors in that tier;
• isolating material extending through the tiers laterally between the transistors of the respective pairs;
• a transition metal dichalcogenide film extending through the tiers over each of two opposing lateral sides of the isolating material between the
• isolating material and the laterally opposing conductive gate material, the transition metal dichalcogenide films individually having a lateral thickness of 1 monolayer to 7 monolayers;
• the transition metal dichalcogenide films extending elevationally beyond at least one of a) an elevationally outer of the laterally opposing conductive gate material tiers, and b) an elevationally inner of the laterally opposing conductive gate material tiers;
• a ferroelectric gate dielectric film extending through the tiers over each of two opposing lateral sides of the individual transition metal dichalcogenide films between the transition metal dichalcogenide films and the laterally opposing conductive gate material;
• and
• a conductive contact directly against a lateral outer sidewall of a) each of the transition metal dichalcogenide films that is elevationally beyond the outer tier of the opposing conductive gate material, or b) each of the transition metal dichalcogenide films that is elevationally beyond the inner tier of the opposing conductive gate material.