排序方式: 共有36条查询结果,搜索用时 171 毫秒
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运用XRD分析氟掺杂二氧化锡导电玻璃导电面SnO2的晶型,发现其属于四方晶系,晶粒尺寸为32.35nm。运用XPS分析氟掺杂二氧化锡导电玻璃导电面的元素组成主要是Sn和O,未能检测出F。进一步研究表明,电子束辐照前后Sn所处的化学状态相同(以Sn4+的形式存在),O以2种化学状态存在,分别对应氧充足和氧缺乏状态,且随着电子束辐照注量的增加,会有少量的氧失去而使氧充足状态的O1s逐渐减少。 相似文献
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Photo correlation spectroscopy was used to measure the particle size distribution of TiO2 films. Other parameters, such as porosity, BET surface area, average pore size, crystallite size D101, distribution of pore size etc. were also measured. The effects of these parameters on the ionic liquid based dye-sensitized solar cells (DSC) were studied. It was concluded that the particle size distribution of nanocrystalline TiO2 played an important role on the performance of DSC. The narrow particle size distribution of nanocrystalline TiO2 increased the efficiency of DSC, while the wide distribution decreased the efficiency of DSC. From the result above, it was also concluded that the photo correlation spectroscopy was a good method to identify the performance of TiO2 films. Based on electrochemical impedance spectroscopy, we found that the particle size distribution could affect the electronic contact between the TiO2 layers as well. The narrow particle size distribution made the electronic contact between TiO2 layers better than the wide particle size distribution of the TiO2 films, and then better the electronic contact, higher the efficiency of the DSC. 相似文献
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利用射频磁控溅射法在玻璃衬底上沉积SnS薄膜并对其进行快速退火处理,利用X射线衍射(XRD)、拉曼光谱(Raman)、X射线能量色散谱(EDS)、原子力显微镜(AFM)和紫外-可见-近红外(UV-Vis-NIR)分光光度计研究了不同溅射功率(60~120 W)条件下制备的SnS薄膜的晶体结构、物相组成、化学组分、表面形貌以及有关光学特性。结果表明:经快速退火的薄膜均已结晶,提高溅射功率有利于改善薄膜的结晶质量、生长择优取向程度和化学配比,薄膜的平均颗粒尺寸呈增大趋势;溅射功率为100 W的薄膜样品的结晶质量和择优取向度高,薄膜应变最小,且为纯相SnS薄膜,Sn/S组分的量比为1∶1.09,吸收系数达10~5cm~(-1)量级,直接禁带宽度为1.54 eV。 相似文献
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TiO2-PVP纳米复合材料的制备、表征及其性能 总被引:1,自引:0,他引:1
文章通过在PVP的存在下水解TiCl4,再经过高压釜分别于140 ℃和180℃处理8 h制备TiO2-PVP纳米复合材料,并用红外光谱(IR)、X-Ray衍射(XRD)、透射电子显微镜(TEM)对其进行表征.结果表明,PVP是通过C=O键中的氧原子吸附在TiO2上, TiO2-PVP中的TiO2是锐钛矿型.紫外可见吸收光谱表明,经过胶溶并用高压釜在140 ℃下处理得到的TiO2-PVP制成的薄膜在紫外区有较强的吸收. 相似文献