A kind of volatile and non-volatile hybrid memory and its preparation method
A non-volatile, memory technology, applied in the direction of electrical components, etc., to achieve the effect of excellent transparency and simple steps
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[0028] The preparation method of volatile and non-volatile mixed multi-function memory comprises the following steps:
[0029] (1) prepare the bottom electrode on the quartz substrate by wet spraying by PEDOT:PSS aqueous solution;
[0030] (2) prepare storage active layer on described bottom electrode by wet spin-coating by graphene oxide alcohol solution;
[0031] (3) The top electrode was prepared from PEDOT:PSS aqueous solution on the storage active layer by wet spraying.
[0032] The performance of the volatile and non-volatile mixed multi-function memory prepared by the above method is analyzed, such as Figure 2-4 Shown:
[0033] like figure 2 As can be seen from the I-V relationship curves of the volatile and non-volatile storage processes of the memory, when the negative scanning voltage is applied, the current shows a sharp upward trend, indicating that at 0-3V, the device first presents "low resistance state". When we continued to increase the scanning voltage,...
Embodiment 1
[0037] Embodiment 1: The preparation method of graphene oxide active intermediate layer.
[0038] Graphene oxide preparation: 2g expanded graphite, 1g NaNO 3 , 6g KMnO 4 with 46ml concentrated H 2 SO 4 After mixing in an ice-water bath, stir for 30 minutes, then heat to 35° C. and continue stirring for 8 hours. Then add 92ml of ultrapure water at 40°C, keep stirring and heat the system to 95°C, and react for 15 minutes. Finally, 280ml of 40°C deionized water and 20ml of hydrogen peroxide were added. Cool to room temperature, centrifuge and wash with 5 wt% hydrochloric acid aqueous solution for 3 times, and then centrifuge and wash with deionized water for 5 times to obtain graphene oxide.
[0039]Preparation of the middle active layer of graphene oxide: prepare 0.05 mg / ml graphene oxide aqueous solution, ultrasonically disperse for 1 minute, and then centrifuge at 3000 rpm to remove a very small amount of large particles in the solution. When forming a film by spin coati...
Embodiment 2
[0040] Example 2: Preparation method of carbon-based multifunctional storage device
[0041] After the quartz glass substrate was ultrasonically cleaned with deionized water, absolute ethanol and acetone, it was covered with a patterned mask, and the bottom electrode was prepared by heating and spraying. The electrode material was PEDOT:PSS conductive polymer with a solid content of 1.2wt%, and Doped with 4 wt% DMSO. The heating temperature of the substrate during spraying is 100°C, and the PEDOT:PSS electrode is completely cured by continuing to heat for 1 hour after spraying. After the bottom electrode is prepared, the graphene oxide active middle layer is prepared by spin coating, and finally the top electrode is prepared by heating and spraying to obtain a multifunctional memory based on carbon materials. The performance of the device is tested by a semiconductor parameter analyzer.
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