Different interactions between a metal electrode and an organic layer and their different electrical bistability performances

Abstract

Different electrical bistability performances were obtained by tuning metal electrodes.

Improving Memory Performances by Adjusting the Symmetry and Polarity of O‐Fluoroazobenzene‐Based Molecules

“…The surface root‐mean‐square (RMS) roughness is 1.45 nm for FAZO‐1 and 1.65 nm for FAZO‐2 , whereas FAZO‐3 has a RMS roughness of 1.03 nm. Compared with the previously reported azo‐based materials films, the film quality of FAZO‐1 , FAZO‐2 , and FAZO‐3 films is better, which results in improvement of device performance.…”

“…This may be due to the smaller work function of Au (−5.1 eV) than that of Al (−4.3 eV) when a negative bias is applied. Electron injection from the electrode to the LUMO was easier with an Al electrode than with an Au electrode …”

“…[39] This setup allowed the investigation of the origin of the memory effect, in particular,i fi ta rises from an intrinsic property of the three molecules. [40] Moreover,t he switching ratio of the devices was evaluated to determinet he impact of the Al and Au electrodes. Moreover, the threshold voltages of Au-based devices slightly increased (0.2 Vf or ITO/FAZO-1/Au, 0.5 Vf or ITO/FAZO-2/Au, and 0.1 V for ITO/FAZO-3/Au).…”

“…Electron injection from the electrode to the LUMO was easier with an Al electrode than with an Au electrode. [40] Moreover,t he switching ratio of the devices was evaluated to determinet he impact of the Al and Au electrodes. The volatile behavioro fI TO/FAZO-1/Al can be observed from at least 36 out of 50 cells, whiche xhibit a7 2% stable binary memory performance (Figure 7a).…”

Bistable electrical switching and nonvolatile memory effects by doping different amounts of GO in poly(9,9-dioctylfluorene-2,7-diyl)

“…According to the literature, organic materials have many advantages, such as high scalability, 2 high flexibility, 3,4 low power consumption, low cost, good processability, 5,6 and the possibility of molecular design by chemical methods. 7–9 For the last few years, researchers have paid more attention to memristors and have focused on the doping of organic/carbon-based composites. 10,11 Some ORRAM devices have been studied using different organic materials, such as poly( N -vinylcarbazole) (PVK), 12 poly(vinyl phenol), 13 poly(methyl methacrylate) (PMMA), 14 polyimide (PI), 15 triphenylamine (TPA), 16 and so on.…”