A triphenylamine-based organic memristive device: a promising candidate for memory and synaptic emulation applications†

In the present work, a novel triphenylamine-based material (coded as PKJ) was synthesized and utilized in resistive switching (RS) devices. The fabricated device shows the bipolar RS effect and exhibits non-ideal memristor properties. The PKJ material-based RS device shows excellent non-volatile memory properties. The Ag/PKJ/FTO RS device can be switched between two distinct resistive states, exhibiting an on/off ratio greater than 15, and can withstand up to 10 000 endurance cycles. Moreover, the device can retain the two memory states for up to 5 × 10³ s. The Weibull distribution and cumulative probability results show excellent switching uniformity in the memristive device. Moreover, the triphenylamine-based device mimics the basic functionalities of the biological synapse, such as potentiation, depression, excitatory postsynaptic current, and paired-pulse facilitation index (%) properties. These results asserted that the triphenylamine-based organic material is a good candidate for non-volatile memory and synaptic learning applications.