Low voltage Ferroelectric FET with sub-100nm copolymer P(VDF-TrFE) gate dielectric for non-volatile 1T memory

A polymer based Ferroelectric gate FET at 1T non-volatile memory on bulk silicon is demonstrated. Spin-coated 40 nm and 100 nm P(VDF-TrFE) (70%-30%) ultra-thin films have been integrated onto 10 nm SiO₂ layer as gate dielectric into a conventional silicon n-MOSFETs. A 1T non-volatile memory cell with an operating voltage as low as 6 V, for the thinnest (40 nm) gate ferroelectric copolymer dielectric, is demonstrated for the first time. The reported Fe-FET devices have Ion/Ioff ranging from 10⁵ to 10⁶ and retention time up to few days. Experiments show reliable memory operation up to 10⁵ cycles and programming time in the order of ms.