期刊
NANO ENERGY
卷 75, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2020.104936
关键词
Two-dimensional MoS2; Tribotronics; Touch memory; Post-impact detection
类别
资金
- GRRC program of Gyeonggi Province [GRRC Sungkyunkwan 2017-B05]
- Korea Electric Power Corporation [R18XA02]
Here we demonstrate a zero-writing-power tribotronic touch memory based on polydimethylsiloxane (PDMS)-passivated two-dimensional (2D) MoS2. Triboelectric charges generated by touching the PDMS friction layer are stored on the dielectric PDMS and act as a gate bias which controls the electronic transport in the underlying 2D MoS2 channel. The shift of the threshold voltage can be as high as similar to 3.5 V and is retained for almost 1 h. During the writing phase, the memory does not consume any power and does not require any battery or connection to electronics. Besides, during the reading phase, a conventional p(++) silicon bottom gate allows to bias the touch memory in the highest sensitivity point, so that the output current can be changed by more than two orders of magnitude by a simple touch. Our results open the way for ultimately power-efficient post-impact detection of very slight touches with applications in safety, security, and robotics.
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