有机—金属复合光存储介质及形状可控CuSCN颗粒的研究

发布时间：2018-06-19 08:42

本文选题：金属-有机复合薄膜 + 相互作用　；参考：《复旦大学》2012年硕士论文

【摘要】：本论文由如下两部分组成：用作光存储介质的有机-金属复合薄膜发现了一种新的可用作光存储介质的有机-金属复合薄膜结构。该薄膜由有机分子层和纳米尺度的Ag金属层构成。讨论了制作该复合薄膜的工艺,并且对于该结构中不同有机分子、有无A1反射层、Ag金属层厚度、作用激光功率及时间等因素对于该复合薄膜的影响进行了初步的研究。对激光作用形成的激光写入点进行了SEM形貌的表征,发现被辐射区有微结构变化。通过紫外-可见(Uv-vis)吸收光谱,以及X射线光电子能谱(XPS)对Ag金属层进行了研究,发现厚度小于10nm时,Ag金属层以纳米颗粒的形式存在。并且通过Uv-vis吸收光谱,发现金属层与有机层之间存在相互作用,认为该相互作用导致了激光写入点的形成。认为该种有机-金属复合薄膜结构具有用作光存储介质的潜力,对今后的研究有很好的参考意义。固-液界面反应制备CuSCN颗粒材料及基于该材料的电存储器件采用一种新的醇溶液体系来制备CuSCN颗粒薄膜。利用Cu薄膜与KSCN醇溶液之间的固-液界面反应,制备出了由特定形状的CuSCN颗粒组成的薄膜。发现可以通过改变溶剂的种类,以及固-液界面反应的温度,来控制生成的CuSCN颗粒的形状。当使用乙醇溶剂,反应温度控制在20℃时,可以得到均一的CuSCN圆台形微米级颗粒。制备出了基于上述CuSCN薄膜的电存储器件。在CuSCN薄膜介质层两面制作Cu、Al电极,得到了可以一次写入多次读取(WORM)的电存储器件。对制备出的电存储器件的电学性能,如成品率、状态比、阈值分布等进行了研究。通过调整参加反应的Cu薄膜的厚度,可以得到成品率高并且阈值分布较窄的电存储器件
[Abstract]:This paper is composed of the following two parts:
Organic metal composite film used as optical storage medium
A new organic metal composite film structure, which can be used as light storage medium, is found. The film consists of organic molecular layer and nano scale Ag metal layer. The process of making the composite film is discussed. There are no A1 reflector, Ag gold layer thickness, laser power and time for different organic molecules in the structure. The effect of the composite film is preliminarily studied.
The laser writing point was characterized by SEM morphology, and the microstructural changes were found in the irradiated region. The Ag metal layer was studied by the ultraviolet visible (Uv-vis) absorption spectrum and the X ray photoelectron spectroscopy (XPS). It was found that when the thickness was less than 10nm, the Ag gold layer existed in the form of nanoparticles and was absorbed through Uv-vis absorption. The interaction between the metal layer and the organic layer is found by the spectrum. It is believed that the interaction leads to the formation of the laser writing point.
It is considered that the structure of organic metal composite film has potential as an optical storage medium, and has a good reference value for future research.
Preparation of CuSCN granular materials by solid-liquid interfacial reaction and electrical storage devices based on the material
A new alcohol solution system was used to prepare CuSCN granular film. A film composed of a specific shape of CuSCN particles was prepared by the solid to liquid interface reaction between Cu film and KSCN alcohol solution. It was found that the shape of the generated CuSCN particles could be controlled by changing the type of solvent and the temperature of the solid liquid interface reaction. When the reaction temperature is controlled at 20 C, homogeneous CuSCN round micron sized particles can be obtained.
An electrical storage device based on the above CuSCN film is prepared. The Cu and Al electrodes are fabricated on two sides of the CuSCN film medium layer. The electrical storage devices that can be written in multiple reads (WORM) are obtained. The electrical properties of the prepared electrical storage devices, such as the yield, the state ratio, the threshold distribution and so on, are studied. The Cu thinning of the reaction is adjusted. The thickness of the film can be used to obtain an electrical storage device with high yield and narrow threshold distribution.
【学位授予单位】：复旦大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP333

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