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Organic electric memory device based on phosphonic acid or trichlorosilane-modified ITO glass substrate and preparation method thereof

a technology of organic electric memory and phosphonic acid, which is applied in the field of preparation of organic electric memory devices based on phosphonic acid or trichlorosilanemodified ito glass substrates, can solve the problems of increasing the number of binary storage devices, scientists are no longer satisfied with binary storage devices, and traditional information storage is gradually showing a situation that cannot meet the growing demand, so as to achieve high potential value for memory application and high yield of ternary memory

Active Publication Date: 2017-11-09
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a method for making sandwich organic electric memory devices by modifying ITO glass substrates. The method is simple and easy to operate. The devices made using this method have a higher yield of ternary memory, which solves the issue of low ternary yield. This makes it potentially useful in the future memory field.

Problems solved by technology

In recent years, with the rapid development of information technology, the traditional information storage is gradually showing a situation that cannot meet the growing demand.
With the deepening of related research, scientists are no longer satisfied with the binary storage devices, and gradually turn their attention to the multilevel memory devices.

Method used

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  • Organic electric memory device based on phosphonic acid or trichlorosilane-modified ITO glass substrate and preparation method thereof
  • Organic electric memory device based on phosphonic acid or trichlorosilane-modified ITO glass substrate and preparation method thereof
  • Organic electric memory device based on phosphonic acid or trichlorosilane-modified ITO glass substrate and preparation method thereof

Examples

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Effect test

example 1

on of Organic Electric Memory Devices Based on Phosphonic Acid-Modified ITO Glass Substrate

[0027]As shown in FIG. 1A, the device is divided into three layers that are the phosphoric acid-modified ITO substrate, organic film and aluminum electrode from up to below. The specific preparation process is as follows:

[0028]1. Cleaning ITO substrate with deionized water, ethanol, and acetone in the ultrasonic, respectively.

[0029]2. ITO substrate is modified with phenylphosphonic acid by a tethered method, then placed in ethanol with ultrasonic treatment for 30 min, and annealed for 6 h in 65° C. vacuum oven in nitrogen atmosphere. The dried ITO glass is sonicated again for 30 minutes separately in ethanol, a 5% trimethylamine / ethanol solution, ethanol, to form a modified layer, whose thickness is of a monolayer of phosphonic acid molecule.

[0030]3. Evaporating the organic coating material of 2-(4-butylphenylamino)-4-4-butylphenylimino)-3-oxo-1-cyclobutenol inner salt on the modified layer, u...

example 2

on of Organic Electric Memory Devices Based on Trichlorosilane-Modified ITO Glass Substrate

[0034]As shown in FIG. 1B, the device is divided into three layers that are the trichlorosilane-modified ITO substrate, organic coating layer, and aluminum electrode. The specific preparation process is as follows:

[0035]1. ITO substrate is cleaned with deionized water, ethanol, and acetone in the ultrasonic, respectively.

[0036]2. 0.01 mmol / L solution of trichlorosilane in toluene is spun onto ITO glass substrate at 2000 rpm in a glove box with a moisture content of less than 20 ppm. Then placed in nitrogen atmosphere for 6 h in vacuum oven at 70° C.

[0037]3. The organic molecules of 2-(4-butylphenylamino)-4-4-butylphenylimino)-3-oxo-1-cyclobutenol inner salt is evaporated on the modified substrates, until the thickness reaches 100 nm to form the coating layer. The deposition rate is 2 A / s under 5×10−4 Pa vacuum condition.

[0038]4. The aluminum electrode is deposited at 2 A / s on the organic film,...

example 3

Ternary Turn-on Voltage and Yield of Memory Devices with Different Modification Layer

[0041]Place the device in a 4200-SCS semiconductor analyzer. Adjust the voltage from −5V to 5V and measure the change of the resistance of the device at room temperature.

[0042]The test data of different devices are counted and the average turn-on voltages are calculated. The results are shown in FIG. 4. The result shows that turn-on voltage of the modified device is decreased and the turn-on voltage of the device modified by octylphosphonic acid is the lowest. The reduction of the turn-on voltage is advantageous for reducing the energy consumption.

[0043]The test data of the different devices are counted and the ternary yield is calculated. The results are shown in FIG. 5. The result shows that the ternary yield of the modified device is improved, and the yield of the device modified with octylphosphonic acid is the highest.

[0044]In summary, with the modification of the ITO substrates, a series of sa...

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Abstract

The invention discloses an organic electric memory device based on phosphonic acid or trichlorosilane-modified ITO glass substrate and a preparation method thereof. The preparation method comprises the following steps of 1) cleaning the ITO glass substrate; 2) forming a phosphonic acid or trichlorosilane modified layer; 3) forming an organic coating film layer; and 4) forming an electrode, and finally obtaining the organic electric memory device. By adoption of the method, a series of sandwich-type organic electric memory devices are prepared; meanwhile, the preparation method is simple, convenient, fast, and easy to operate; compared with the conventional device, the turn-on voltage of the organic electric memory device is lowered, the yield of the multi-level system is improved, and the problem of relatively low ternary productivity at present is solved; and therefore, the organic electric memory device has extremely high application value in the future memory fields.

Description

TECHNICAL FIELD[0001]The present invention belongs to the technical field of organic semiconductor materials and relates to a preparation method of an organic electric memory device based on phosphonic acid or trichlorosilane-modified ITO glass substrate, and an organic memory device prepared by the preparation method.BACKGROUND TECHNIQUE[0002]In recent years, with the rapid development of information technology, the traditional information storage is gradually showing a situation that cannot meet the growing demand. The development of organic electric memory device has greatly expanded the research area of information storage carriers. With the deepening of related research, scientists are no longer satisfied with the binary storage devices, and gradually turn their attention to the multilevel memory devices. The traditional binary memory makes the intelligence only simulate the states of “yes” and “no”, but cannot simulate the three cognitive states of man, namely “yes”, “no” and ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01L51/10H01L51/00H10K99/00
CPCH01L51/102H01L51/0096H01L51/005H01L51/0021H01L51/0002H10K19/00Y02E10/549Y02P70/50H10K71/60H10K2102/103H10K10/82H10K19/202H10K71/10H10K77/10H10K85/60
Inventor LU, JIANMEIHE, JINGHUI
Owner SUZHOU UNIV
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