All‐Organic Photopatterned One Diode‐One Resistor Cell Array for Advanced Organic Nonvolatile Memory Applications

Flexible and twistable non-volatile memory cell array with all-organic one diode–one resistor architecture

“…To avoid this erosion, Bis-FB-N 3 was used to crosslink the alkyl chains in P3HT thin films via light-catalysed N-H insertion reactions 25 . The Bis-FB-N 3 acts as a negative photoresistor responding to 254 nm ultraviolet light and allows patterning of common alkylated organic materials 23,25 . Crosslinking with Bis-FB-N 3 imbues the organic layer with a robust resistance against common organic solvents used for spin coating.…”

“…In addition, Bis-FB-N 3 is one of the few crosslinkers that are compatible with temperature-sensitive plastic substrates. In our previous work, an ultraviolet patternable polyimide (PI) and PCBM blending solution was chosen as a memory component on a rigid substrate, because the PI has good chemical robustness after imidization 23 . Unfortunately, the imidization temperature of PI is known as over 250°C and this issue allows limited use of PI on plastic substrate.…”

“…However, these approaches have been based on a hybrid (organic/ inorganic) device structure and could not be printed on flexible substrates or take full advantage of the solution processibility of organic materials. Recently, 1D-1R memory devices with exclusively organic active materials (excluding electrodes) and organic bistable rectifying diodes have been reported 23,24 . However, they were not demonstrated on flexible substrates with a high density of cells, nor did they exhibit essential memory characteristics, such as retention, endurance, in situ pulse response and exhaustive testing, during and after physical stresses.…”

High performance, foldable, organic memories based on ultra-low voltage, thin film transistors

“…a bistable electrical behavior between 2 different resistive states); (ii) transistor-based memories. The first category unfortunately suffers a strong limitation: when memory elements are arranged into an array structure, for instance in a crossbar configuration, cross talking between adjacent elements can strongly affect the single device behavior; as a consequence, this approach typically requires the coupling of a single memory element with a series diode [9].…”

Monolithically integrated organic resistive switches for luminance and emission color manipulation in polymer light emitting diodes

“…This selector device can be an (organic) rectifier for ORS. [37][38][39] The appealing point on the approach presented here is that the OLED can possibly be used as a rectifying element, similar to that presented in Ref. 13 as it also exhibits a strong nonlinearity in its IV characteristics.…”