Lowering programmed voltage of organic memory transistors based on polymer gate electrets through heterojunction fabrication

Abstract: The authors report on low operation voltage memory cells based on heterojunction ambipolar organic transistors with polymer gate electret (PGE). The introduction of the N,N′-dioctyl perylene diimide/pentacene heterojunction into the memory OFETs with PGE successfully lowered the memory cells’ reading, writing and erasing programmed voltages (reading voltage of 2V, writing and erasing programmed voltages of 10V). Meanwhile, the memory devices showed reproducible and durable memory behavior in more than 500 cycles’ testing. The built-in electric field-effect at heterojunction surface should efficiently reduce operation voltage of the memory devices. [Copyright &y& Elsevier]