Photostimulation two-end artificial synaptic device and preparation method and application thereof

A technology of synaptic devices and light stimulation, which is applied in the direction of electrical components, etc., can solve the problems of speed limitation of simulated synaptic devices, and achieve the effects of easy implementation, low energy consumption and low cost

Active Publication Date: 2021-04-20
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are some disadvantages in electrical stimulation signals. For example, due to the limitation of bandwidth connection density, the operation speed of simulated synaptic devices will be greatly limited.

Method used

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  • Photostimulation two-end artificial synaptic device and preparation method and application thereof
  • Photostimulation two-end artificial synaptic device and preparation method and application thereof
  • Photostimulation two-end artificial synaptic device and preparation method and application thereof

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Embodiment 1

[0042] In this embodiment, guanidinium perchlorate C (NH 2 ) 3 ClO 4 It is a small molecule ferroelectric layer, and phthalocyanine (CuPc) is used as an organic semiconductor layer, which have the following structures:

[0043]

[0044] Preparation of artificial synaptic devices based on conductive polymers, the specific steps are as follows:

[0045] (1) Clean the lower electrode, put the lower electrode in deionized water for 1 to 3 minutes, then put it in acetone solution for 1 to 3 minutes, then put it in isopropanol for 1 to 3 minutes, and finally Put the lower electrode into a vacuum oven to dry;

[0046](2) To prepare small molecule ferroelectrics, react guanidinium perchlorate with guanidine carbonate and perchloric acid in a ratio of 1:1 in an aqueous solution to synthesize guanidinium perchlorate, let it evaporate slowly, and obtain colorless and transparent after 48 hours of crystals. Wherein, the concentration of perchloric acid is 0.05~1mol / L, the concentr...

Embodiment 2

[0053] The present embodiment uses tetraethyl ammonium perchlorate (C 8 h 20 ClNO 4 ) is a small molecule ferroelectric layer, and copper phthalocyanine (CuPc) is used as an organic semiconductor layer, which has the following structure respectively:

[0054]

[0055] Preparation of artificial synaptic devices based on conductive polymers, the specific steps are as follows:

[0056] (1) Clean the lower electrode, put the lower electrode in deionized water for 1 to 3 minutes, then put it in acetone solution for 1 to 3 minutes, then put it in isopropanol for 1 to 3 minutes, and finally Put the lower electrode into a vacuum oven to dry;

[0057] (2), vacuum evaporation organic semiconductor layer, on the lower electrode that step (1) obtains, thermal evaporation deposits a layer of phthalocyanine copper organic semiconductor layer, puts phthalocyanine copper material in the quartz crucible in the vacuum thermal evaporator , when the vacuum degree of the vacuum evaporation ...

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Abstract

The invention discloses a photostimulation two-end artificial synaptic device and a preparation method and application thereof, and the preparation method comprises the steps: sequentially evaporating a copper phthalocyanine organic semiconductor, a small molecular ferroelectric and a copper phthalocyanine organic semiconductor film on the surface of an electrode in a vacuum thermal evaporation mode; and forming a metal/organic semiconductor/small molecule ferroelectric layer/organic semiconductor/metal device structure. Wherein the electrode is a conductor of gold, silver, copper, aluminum, indium tin oxide and the like, and the micromolecular ferroelectric layer is a micromolecular ferroelectric of guanidine perchlorate and tetraethylammonium perchlorate. The artificial synapse device prepared by the invention can realize a function similar to a biological synapse, and has the advantages of low power consumption, low crosstalk and the like. The preparation method is simple in operation steps, low in cost, easy to implement, safe and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of artificial synapse device preparation, in particular to a method for preparing an organic semiconductor and small molecule ferroelectric two-terminal photoelectric artificial synapse device. Background technique [0002] Since most information of biological synapses is transmitted in the form of electrical signals, in previous synaptic devices, the connection strength of synapses is changed by applying electrical signals. However, there are some disadvantages in electrical stimulation signals. For example, due to the limitation of bandwidth and connection density, the operation speed of analog synaptic devices will be greatly limited. Therefore, some people have recently tried to introduce light stimulation signals to improve this limitation. In addition, because light pulse signals have the advantages of low crosstalk and low power consumption, they can become a favorable choice for improving computing s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L45/00
CPCY02E10/549
Inventor 罗春花张尧迪蒋纯莉彭晖钟妮林和春田博博段纯刚
Owner EAST CHINA NORMAL UNIV
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