Design principles of dual-functional molecular switches in solid-state tunnel junctions
Design principles of dual-functional molecular switches in solid-state tunnel junctions
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DOI：
10.1063/5.0016280
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发表时间：
2020-07
影响因子：
4
通讯作者：
Damien Thompson;E. Barco;C. Nijhuis
中科院分区：
文献类型：
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作者：
Damien Thompson;E. Barco;C. Nijhuis
在过去的20年里，分子电子学取得了巨大的进步，但开发出在双端隧道结中运行良好的分子开关仍然具有挑战性。新兴技术需要多功能连接，可以在单个分子或分子单层内的不同操作之间切换。通常关注的是在高电导和低电导状态之间转移结的分子，但在这里我们描述具有双功能开关能力的分子结。我们讨论了这种开关的工作机制，并给出了一个二极管的“二合一”结与一个附加开关串联的例子，该开关既可以作为静电开关，也可以作为记忆开关。我们提出了双功能分子开关的未来设计指南，并对未来的研究方向进行了展望。
Molecular electronics has improved tremendously over the past 20 years, but it remains challenging to develop molecular switches that operate well in two-terminal tunnel junctions. Emerging technologies demand multi-functional junctions that can switch between different operations within a single molecule or molecular monolayer. Usually the focus is placed on molecules that shift the junctions between high and low conductance states, but here we describe molecular junctions with dual-functional switching capability. We discuss the operating mechanism of such switches and present examples of “two-in-one” junctions of a diode placed in series with an additional switch, which can operate either as an electrostatic or a memory on/off switch. We propose guidelines for future designs of such dual-function molecular switches and provide an outlook for future directions of research.