A wearable multiplexed silicon nonvolatile memory array using nanocrystal charge confinement

Science Advances
Jaemin KimDae-Hyeong Kim

Abstract

Strategies for efficient charge confinement in nanocrystal floating gates to realize high-performance memory devices have been investigated intensively. However, few studies have reported nanoscale experimental validations of charge confinement in closely packed uniform nanocrystals and related device performance characterization. Furthermore, the system-level integration of the resulting devices with wearable silicon electronics has not yet been realized. We introduce a wearable, fully multiplexed silicon nonvolatile memory array with nanocrystal floating gates. The nanocrystal monolayer is assembled over a large area using the Langmuir-Blodgett method. Efficient particle-level charge confinement is verified with the modified atomic force microscopy technique. Uniform nanocrystal charge traps evidently improve the memory window margin and retention performance. Furthermore, the multiplexing of memory devices in conjunction with the amplification of sensor signals based on ultrathin silicon nanomembrane circuits in stretchable layouts enables wearable healthcare applications such as long-term data storage of monitored heart rates.

References

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Dec 10, 2014·Nature Communications·Jaemin KimDae-Hyeong Kim
May 15, 2015·Advanced Materials·Jung Ho YoonCheol Seong Hwang

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Citations

Jul 7, 2017·Advanced Materials·Yaqing LiuXiaodong Chen
Jan 16, 2018·Advanced Healthcare Materials·Hyunjae LeeDae-Hyeong Kim
Jun 13, 2018·Advanced Materials·Ali K YetisenHaider Butt
Jan 10, 2018·Advanced Materials·Morteza AmjadiMetin Sitti
Nov 20, 2016·Advanced Materials·Jian Zhu, Mark C Hersam
Mar 19, 2019·Annual Review of Biomedical Engineering·Eun Kwang LeeChi Hwan Lee
Aug 14, 2019·Advanced Materials·Dong Chan KimDae-Hyeong Kim
Jan 30, 2018·Science Advances·Gilbert Santiago Cañón BermúdezDenys Makarov
Aug 24, 2017·Advanced Materials·Jaemin KimDae-Hyeong Kim
Sep 20, 2017·Proceedings of the National Academy of Sciences of the United States of America·Wonryung LeeTakao Someya
Sep 27, 2018·Advanced Science·Ziyu LvVellaisamy A L Roy
Nov 30, 2018·Chemical Society Reviews·Bowen ZhuWenlong Cheng
Feb 14, 2017·Nano Convergence·Jaemin KimDae-Hyeong Kim
Jan 29, 2021·Advanced Healthcare Materials·Hyung Joon ShimDae-Hyeong Kim
Jun 8, 2021·Annual Review of Chemical and Biomolecular Engineering·Sung-Hyuk SunwooDae-Hyeong Kim
Oct 11, 2017·Chemical Reviews·Yaqing LiuXiaodong Chen
Apr 11, 2018·ACS Applied Materials & Interfaces·Do Hyeong KimTae Whan Kim
Mar 24, 2020·Chemical Reviews·Ziyu LvSu-Ting Han
Apr 20, 2019·Nano Letters·Mincheol LeeDae-Hyeong Kim
Dec 29, 2021·Chemical Reviews·Kyoung Won ChoDae-Hyeong Kim

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Methods Mentioned

BETA
atomic force microscopy
AFM
transmission electron microscopy
x-ray spectroscopy
atomic layer deposition

Software Mentioned

XEL

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