Ternary Flexible Electro‐resistive Memory Device based on Small Molecules

Abstract

Flexible memory devices have continued to attract more attention due to the increasing requirement for miniaturization, flexibility, and portability for further electronic applications. However, all reported flexible memory devices have binary memory characteristics, which cannot meet the demand of ever-growing information explosion. Organic resistive switching random access memory (RRAM) has plenty of advantages such as simple structure, facile processing, low power consumption, high packaging density, as well as the ability to store multiple states per bit (multilevel). In this study, we report a small molecule-based flexible ternary memory device for the first time. The flexible device maintains its ternary memory behavior under different bending conditions and within 500 bending cycles. The length of the alkyl chains in the molecular backbone play a significant role in molecular stacking, thus guaranteeing satisfactory memory and mechanical properties.

Recent Advances of Flexible Data Storage Devices Based on Organic Nanoscaled Materials

“…Small molecules with high solubility and easy processing ability are favorable for fabrication of the ORM. Recently, Zhang et al designed and synthesized a series of small molecules based on diazinyl‐anthracene core with different alkyl chain length which were named as AzoANs. The author constructed flexible ORM devices on PET substrates with AzoANs.…”

Functional Non‐Volatile Memory Devices: From Fundamentals to Photo‐Tunable Properties

“…From the perspective of device manufacture, organic ReRAMs possess large area printability and low fabrication costs and the device structures are relatively simple. On the other hand, from the perspective of electrical performance, the non‐volatile organic ReRAMs with lossless reading process have relatively long retention time and high endurance …”

Recent Advances in Resistive Switching Materials and Devices: From Memories to Memristors

“…Considering the portable and wearable applications, Lu et al also fabricated flexible ternary memory devices based on small molecule of BAzoAN and plastic poly(ethylene terephthalate) (PET) substrate (Fig. 18), which can endure 500 continuous bending cycles at the bending radius of 6.5 mm without 254 any switching performance degradation. Although dozens of organic small molecules have been designed and synthesized for resistive switching memory devices, it is noteworthy that the switching behaviors of the small molecules reported so far are normally WORM type.…”