本文選題：膠體球模板 + 有序孔　； 參考：《西南大學》2015年碩士論文

【摘要】：納米技術已經從對納米材料的合成及其基礎性質的探索,發(fā)展到利用不同維度納米材料獨特的性質進行生產應用的研究。近年來,納米材料的新研究熱點己逐漸轉向二維有序納米結構陣列的合成及其性質研究。目前,對于二維有序納米陣列結構的研究已逐漸成為材料科學研究的前沿重要課題,在光學,光子學,光電子器件,磁學,信息科學,傳感器,催化,數(shù)據(jù)存儲,熱電,生物技術等方面都有著很好的發(fā)展應用前景。二維有序納米陣列結構是納米材料體系的重要組分,是指在二維空間內選擇相應的納米結構單元(如顆粒、團簇、納米級孔洞、納米絲)按一定規(guī)律組成的對應結構體系。本論文中采用單層膠體晶體模板技術,利用恒電流沉積、熱氧化處理和磁控濺射等方法,合成宏觀尺度上有序的納米孔陣列結構,并研究其結構相關的物性。論文重點探究了有序孔陣列結構的控制與合成方法,探索與陣列體系結構相關的性質。研究的內容如下：1、Ni及Ni-Pt合金有序孔陣列的構筑及磁性研究以聚苯乙烯膠體晶體為模板,采用恒電流沉積的方法在ITO基底上構筑了單質Ni,還在柔性的PET/ITO基底上構筑了Ni和Ni-Pt合金有序孔陣列結構。利用掃描電子顯微鏡(SEM)、X射線衍射(XRD)、能譜儀(EDS)、振動樣品磁強計(VSM)和磁力顯微鏡(MFM)表征了樣品的結構、組分和磁學特性。結果顯示,所制備的單質Ni有序孔陣列結構呈現(xiàn)六方規(guī)則排列,磁性分析表明樣品為具有較小矯頑力的良好軟磁材料,其矯頑力和剩磁率隨角度(外磁場與微納陣列夾角)變化存在一定的規(guī)律。結合理論進行分析,單質Ni有序孔陣列本身的形狀各向異性是其取得優(yōu)良磁學性能的重要原因,孔洞形狀各向異性和薄膜本身磁晶各向異性的競爭機制是造成其磁性發(fā)生變化的物理本質。所制備的Ni-Pt合金有序孔陣列結構可彎曲,其孔同樣呈六方規(guī)則排列,孔徑約為300 nm,孔間距約500 nm,材料中Pt元素的含量約為1.3%。磁性分析表明樣品同樣為具有較小矯頑力的良好軟磁材料,在平行和垂直與磁場方向測得的矯頑力分別為495.77 A/m和770.71 A/m,具有磁各向異性特點。2、二維及三維氧化鎳有序孔陣列的構筑及磁性研究以聚苯乙烯膠體晶體為模板,采用電化學沉積與熱氧化處理相結合的方法在ITO基底上構筑了二維及三維NiO有序孔薄膜。利用掃描電子顯微鏡、X射線衍射儀和振動樣品磁強計考察了樣品的形貌、結構和磁學特性。結果顯示,所制備的NiO有序大孔薄膜的孔徑和孔間距均為500 nm,三維NiO有序大孔薄膜厚度為2.4μm。磁性分析表明二維及三維NiO有序大孔薄膜樣品均為具有較小矯頑力的良好軟磁材料,具有磁各向異性的特點。3、NiO-ZnO異質結有序孔陣列的構筑及其電學性能研究以聚苯乙烯膠體晶體為模板,利用恒電流沉積與熱氧化處理相結合的方法在ITO基底上構筑p型NiO薄膜,在此NiO薄膜襯底上通過磁控濺射制備n型ZnO薄膜,選用合適的生長條件,制備出NiO/ZnO異質結,此異質結構是由下而上依次生長在襯底上的p型NiO有序多孔薄膜和n型ZnO薄膜所構成。利用掃描電子顯微鏡、X射線衍射儀探究了樣品的形貌和結構,利用電化學工作站測量了NiO-ZnO異質結的電學性能。循環(huán)伏安測試展示出異質結具有顯著的整流特性,表明成功制備了p-n異質結。
[Abstract]:Nanotechnology has developed from the exploration of the synthesis and basic properties of nanomaterials to the study of the production and application of the unique properties of nanomaterials with different dimensions. In recent years, the new research focus of nanomaterials has gradually shifted to the synthesis and properties of two-dimensional ordered nanostructured arrays. The research of array structure has gradually become an important subject in the research of material science. It has good prospects for development and application in the fields of optics, photonics, optoelectronic devices, magnetics, information science, sensors, catalysis, data storage, thermoelectricity, biological technology and so on. In this paper, a single colloidal crystal template technology is used in this paper to synthesize ordered nanoscale arrays on the macro scale by using the monolayer colloidal crystal template technology, using constant current deposition, thermal oxidation treatment and magnetically controlled splashing. Structure, and study its structure related properties. The paper focuses on the control and synthesis methods of ordered pore array structure, and explores the properties related to the array architecture. The contents of the research are as follows: 1, the construction and magnetic study of Ni and Ni-Pt alloy ordered porous arrays and magnetic studies using polystyrene colloidal crystals as templates, using constant current deposition method A single Ni was constructed on the ITO base, and an ordered pore array structure of Ni and Ni-Pt alloys was constructed on the flexible PET/ITO substrate. The structure, composition and magnetic properties of the samples were characterized by scanning electron microscopy (SEM), X ray diffraction (XRD), EDS (EDS), vibrating sample magnetometer (VSM) and magnetic force microscopy (MFM). The results showed that the prepared samples were prepared. The structure of the single Ni ordered pore array is arranged in six square rules. The magnetic analysis shows that the sample is a good soft magnetic material with small coercive force. The coercive force and the remanence rate vary with the angle (the angle of the external magnetic field and the micro nano array). The important reason for obtaining excellent magnetic properties is that the competitive mechanism of the pore shape anisotropy and the magnetocrystalline anisotropy of the film itself is the physical nature of the change in magnetic properties. The ordered pore array structure of the Ni-Pt alloy is flexural. The pore size is also arranged in six square rules, the pore diameter is about 300 nm, the hole spacing is about 500 nm, and the Pt element in the material is in the material. The content of the element is about 1.3%. magnetic analysis indicating that the sample is also a good soft magnetic material with small coercivity. The coercive force measured in the direction of parallel and vertical and the magnetic field is 495.77 A/m and 770.71 A/m, respectively, with magnetic anisotropy.2. The construction and magnetic study of two-dimensional and three-dimensional ordered array of nickel oxide arrays and magnetic studies are polystyrene colloids A two-dimensional and three-dimensional NiO ordered pore film was constructed on the ITO substrate by electrochemical deposition and thermal oxidation. The morphology, structure and magnetic properties of the samples were investigated by scanning electron microscopy, X ray diffractometer and vibrating sample magnetometer. The results showed that the pores of the prepared NiO ordered macroporous films were made. The distance between the diameter and the hole is 500 nm, and the three-dimensional NiO ordered macroporous film thickness is 2.4 M. magnetic analysis. It shows that the two-dimensional and three-dimensional NiO ordered macroporous films are good soft magnetic materials with small coercive force. The magnetic anisotropy has the characteristics of.3, NiO-ZnO heterojunction ordered pore arrays and the electrical properties of polystyrene colloids The crystal is a template, using the method of constant current deposition and thermal oxidation to construct the P NiO thin film on the ITO substrate. The n ZnO thin film is prepared by magnetron sputtering on this NiO film substrate. The suitable growth conditions are used to prepare the NiO/ZnO heterojunction. This heterostructure is a p type NiO ordered NiO ordered by the lower and upper layers on the substrate. The pore film and N type ZnO thin film are made up. The morphology and structure of the sample are investigated by scanning electron microscope and X ray diffractometer. The electrical properties of the NiO-ZnO heterojunction are measured by the electrochemical workstation. The cyclic voltammetry test shows that the heterojunction has a remarkable rectifying characteristic, indicating the successful preparation of the p-n heterojunction.

【學位授予單位】：西南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB383.1

【參考文獻】

相關期刊論文 前1條

1 Shan Shi;Chengjun Xu;Cheng Yang;Jia Li;Hongda Du;Baohua Li;Feiyu Kang;;Flexible supercapacitors[J];Particuology;2013年04期

，

本文編號：1862276