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Electrically controllable monomolecular switching device and preparation method thereof

A technology for switching devices and molecular devices, applied in the field of electrically controllable single-molecule switching devices and their preparation, can solve the problems of increased energy consumption, difficult integrated application, and difficult switching control of integrated circuits, and achieves the effect of stable electrical control.

Pending Publication Date: 2022-06-07
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, it is difficult for real integrated circuits to switch on and off through light stimulation, and light conditions may bring additional thermal effects and increase energy consumption
That is to say, it is difficult to realize the real integrated application by means of light stimulation for switch control.

Method used

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  • Electrically controllable monomolecular switching device and preparation method thereof
  • Electrically controllable monomolecular switching device and preparation method thereof
  • Electrically controllable monomolecular switching device and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0104] This embodiment is a single-molecule switching device with a liquid gate.

[0105] like Figure 2a As shown, the single-molecule switching device is a graphene-based single-molecule device, and the single-molecule switching device is fabricated into a chip, which is based on SiO 2 / Si wafer substrates can be called electrically controllable single-molecule transistor switching devices. Including: basal layer ( Figure 2a not shown) and graphene layers. A graphene layer is located on the base layer. The graphene layer is plated with at least a pair of metal electrodes arranged oppositely. In each pair of metal electrodes, one is used as the source electrode of the triode, and the other is used as the drain electrode of the triode. The graphene between each pair of source and drain forms a conductive channel. In addition, a third metal electrode is also arranged on the graphene layer.

[0106] like Figure 2a As shown, multiple pairs of source and drain, and graphe...

Embodiment 2

[0121] This embodiment is a single-molecule switching device with a solid-state gate.

[0122] like Figure 4a As shown, the single-molecule switching device is a graphene-based single-molecule device, and the single-molecule switching device is fabricated into a chip, which is based on SiO 2 / Si wafer substrate. Including: basal layer ( Figure 4a not shown) and graphene layers. A graphene layer is located on the base layer. The graphene layer is plated with at least a pair of metal electrodes arranged oppositely. In each pair of metal electrodes, one is used as the source electrode of the triode, and the other is used as the drain electrode of the triode. The graphene between each pair of source and drain forms a conductive channel.

[0123] like Figure 4a As shown, multiple pairs of source and drain, and graphene between each pair of source and drain form a graphene strip in the middle of the chip.

[0124] The structure of the graphene point electrode in the single...

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Abstract

The invention provides an electrically controllable monomolecular switch device and a preparation method thereof, and the monomolecular switch device is characterized in that terminal carboxyl (-COOH) dangling bonds formed by each pair of graphene point electrodes and molecules terminated by amino (-NH2) in a free radical type molecular bridge are subjected to amidation reaction for bridging; according to the invention, connection with a free radical type molecular bridge through an amido bond (-CO-NH-) is realized, so that molecular bridging between each pair of graphene point electrodes is realized. Therefore, the magnitude of the current between the source electrode and the drain electrode can be controlled by adjusting the input grid voltage, so that switching control is realized. That is to say, the single-molecule switching device realizes stable electric control and is beneficial to real integrated application of the single-molecule switching device.

Description

technical field [0001] The invention relates to the technical field of single-molecule devices, in particular to an electrically controllable single-molecule switching device and a preparation method. Background technique [0002] At present, single-molecule devices are still in the research stage, and single-molecule switching devices mainly controlled by optics have appeared. The basic principle is that between the two switching electrodes, photosensitive molecules such as diarylene (DAE) and azobenzene are arranged as functional centers. The molecules in the functional center are alternately irradiated by ultraviolet and visible light to generate current signals of different amplitudes. Open-loop and closed-loop states are formed to realize optically controllable switching functions. [0003] However, it is difficult for real integrated circuits to be switched on and off by means of light stimulation, and the lighting conditions may bring additional thermal effects and i...

Claims

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Application Information

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IPC IPC(8): H01L29/78H01L29/06H01L29/16H01L29/10H01L21/336
CPCH01L29/78H01L29/0603H01L29/0684H01L29/1606H01L29/1029H01L29/66477
Inventor 郭雪峰李渝
Owner PEKING UNIV
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