Fabrication And Electrical Property Characterizations Of Three Organic Molecular Complex Thin Films

With the development of the information storage technology, small molecular organic materials have attracted considerable attention serving as the storage medium taking the place of inorganic semiconductor.This paper introduces the switching mechanism of the organic molecular film from the aspect of the organic molecular materials. On that basis, the electrical properties of the films are studied. Organic films based on cracks and mixed with nanoparticles are fabricated with using organic molecular materials including TZ2., DDME、MV115and MV73, respectively. After that, the film characteristics are defined by the X-ray diffraction (XRD), Scanning electron microscope (SEM), Transmission electron microscopy (TEM), UV-visible absorption spectrometer, surface profiler, and electrochemical workstation, such as thin films which the constituents, morphology, electrical properties and so on.The work mainly includes:SnO2and CuO doped SnO2(CuO-SnO2) thin films are deposited by the sol-gel method. The effects of the heating rate and the doping of the PEG(1000) and glycerinon on the phase, microstructure, and electrical properties of the SnO2nanocomposite film are investigated. The results show that SnO2film has a tetragonal SnO2phase. The optimum heating rate of the CuO-SnO2thin film is3℃/min. With the increase of the heating rate, the crystallinity of SnO2film gets better and the crystal particle grow bigger. The conductive properties are also improved. The resistance of the PEG doped SnO2film is smaller than that of the undoped SnO2film under the same conditions. The PEG(1000) and glycerinon doped CuO-SnO2films with different doping weight are also analyzed by means of XRD, SEM and electrochemical workstation. The results of the above research indicated that the SnO2film presents good microstructure and electrical properties. For that reason, we study the electrical properties of oxide crack based TZ2and DDME organic molecular film.MV115and MV73thin films and composite films with different doped ZnO nanoparticles are deposited. The effects of the doping weight and doping elements (Cu, Li, Ag, Cu-Li and Ag-Li) of the ZnO nanoparticles on the film phase, microstructure, electrical properties are systematically researched. The UV-visible absorption spectroscopy of the organic materials in the CH2Cl2solvent was recorded. The results show that the organic materials formed dense films on the substrate. The nanoparticle crystallized in the film. The I-Ⅴ curves of the films indicate that all the as-fabricated films show switching behavior. A better switching characteristic can be obtained be controlling the doped amounts.Study the electrical properties of oxide crack Metal oxide fracture based organic thin-film showing significant power switch phenomenon, but because the conductivity of fractured film, which is better, easy to produce conduction phenomenon. The electrical properties of MV73and MV115thin films complex with nanoparticles more significant impact. The electrode of electrons and holes near the compound can be reduced by adding nanoparticles. With switching voltage of thin films reducing, the carrier of thin films to improve the chances of transmission, so improve on-off ratio of thin films. In conclusion, this paper studies the electrical properties of the organic molecular and composite thin films. Some useful results have been obtained, laying some foundation for the subsequent research.