期刊
NANO LETTERS
卷 18, 期 8, 页码 4675-4683出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.8b00797
关键词
graphene edges; polar molecules; ferroelectricity; memcapacitor; hysteresis; molecular switch
类别
资金
- Danish National Research Foundation Center for Nanostructured Graphene [DNRF103]
- EU Seventh Framework Programme (FP7) [FP7-6040007]
- EC Graphene FET Flagship [604391]
- Otto Monsteds Fond
- European Structural and Investment Funds in the FEDER component, through the Operational Competitiveness and Internationalization Program (COMPETE 2020) [002797, POCI-01-0247-FEDER-002797]
We show that polar molecules (water, ammonia, and nitrogen dioxide) adsorbed solely at the exposed edges of an encapsulated graphene sheet exhibit ferroelectricity, collectively orienting and switching reproducibly between two available states in response to an external electric field. This ferroelectric molecular switching introduces drastic modifications to the graphene bulk conductivity and produces a large and ambipolar charge bistability in micrometer-size graphene devices. This system comprises an experimental realization of envisioned memory capacitive (memcapacitive) devices whose capacitance is a function of their charging history, here conceived via confined and correlated polar molecules at the one-dimensional edge of a two-dimensional crystal.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据