Developing fatigue-resistant ferroelectrics using interlayer sliding switching

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-06-06 DOI:10.1126/science.ado1744

Renji Bian, Ri He, Er Pan, Zefen Li, Guiming Cao, Peng Meng, Jiangang Chen, Qing Liu, Zhicheng Zhong, Wenwu Li, Fucai Liu

引用次数: 0

Abstract

Ferroelectric materials have switchable electrical polarization that is appealing for high-density nonvolatile memories. However, inevitable fatigue hinders practical applications of these materials. Fatigue-free ferroelectric switching could dramatically improve the endurance of such devices. We report a fatigue-free ferroelectric system based on the sliding ferroelectricity of bilayer 3R molybdenum disulfide (3R-MoS₂). The memory performance of this ferroelectric device does not show the wake-up effect at low cycles or a substantial fatigue effect after 10⁶ switching cycles under different pulse widths. The total stress time of the device under an electric field is up to 10⁵ s, which is long relative to other devices. Our theoretical calculations reveal that the fatigue-free feature of sliding ferroelectricity is due to the immobile charge defects in sliding ferroelectricity.

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利用层间滑动开关开发抗疲劳铁电体

铁电材料具有可切换的电极化特性，这对高密度非易失性存储器很有吸引力。然而，不可避免的疲劳阻碍了这些材料的实际应用。无疲劳铁电开关可以显著提高设备的耐用性。我们报告了一种基于双层 3R-MoS2 滑动铁电性的无疲劳铁电系统。这种铁电器件的存储性能在低周期时不会出现 "唤醒效应"，在不同脉冲宽度下开关 106 个周期后也不会出现明显的 "疲劳效应"。该器件在电场下的总应力时间长达 105 秒，与其他器件相比时间较长。我们的理论计算发现，滑动铁电的无疲劳特性是由滑动铁电中的不动电荷缺陷造成的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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