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Biodegradable and flexible l-carrageenan based RRAM with ultralow power consumption
Jing-Yao Bian(卞景垚), Ye Tao(陶冶), Zhong-Qiang Wang(王中强), Xiao-Ning Zhao(赵晓宁), Ya Lin(林亚), Hai-Yang Xu(徐海阳), and Yi-Chun Liu(刘益春)
Chin. Phys. B,
2024, 33 (2):
027301.
DOI: 10.1088/1674-1056/ad19d4
Transient memories, which can physically disappear without leaving traceable remains over a period of normal operation, are attracting increasing attention for potential applications in the fields of data security and green electronics. Resistive random access memory (RRAM) is a promising candidate for next-generation memory. In this context, biocompatible $\iota $-carrageenan ($\iota $-car), extracted from natural seaweed, is introduced for the fabrication of RRAM devices (Ag/$\iota $-car/Pt). Taking advantage of the complexation processes between the functional groups (C-O-C, C-O-H, et al.) and Ag metal ions, a lower migration barrier of Ag ions and a high-speed switching (22.2 ns for SET operation/26 ns for RESET operation) were achieved, resulting in an ultralow power consumption of 56 fJ. And the prepared Ag/$\iota $-car/Pt RRAM devices also revealed the capacities of multilevel storage and flexibility. In addition, thanks to the hydrophilic groups of $\iota $-car molecule, the RRAM devices can be rapidly dissolved in deionized (DI) water within 13 minutes, showing excellent transient characteristics. This work demonstrates that $\iota $-car based RRAM devices have great potential for applications in secure storage applications, flexible electronics and transient electronics.
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