共查询到20条相似文献,搜索用时 125 毫秒
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系统地阐述了当前富勒烯化学开笼的研究进展情况,并重点介绍了叠氮化富勒烯衍生物的制备方法,此外,还介绍了重氮化,氮杂环化学开笼,单线态氧化,以及硫化等化学开笼方法。 相似文献
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化学气相淀积是在微电子、光纤通讯、超导等新技术领域里广泛用于制备各种具有特殊性能的薄膜的工艺过程。该过程的机理和气固相催化反应十分相似。本文以该过程在微电子器件生产中的应用为背景,概述了化学气相淀积的优点,分析了化学气相淀积反应器中传递过程和化学反应的相互关系,介绍了运用数学模型方法研究化学气相淀积反应器的进展。 相似文献
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分析了热壁化学气相淀积反应器在流型、温度和浓度分布以及淀积速率等方面与冷壁反应器的异同,探讨了流动特性、传递过程和反应器几何尺寸对淀积过程的影响,为淀积不同薄膜时反应器的选型及设计提供了方法和依据. 相似文献
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ZnO thin films were prepared on quartz glass substrates by different sol-gel methods using a spin-coating technique. The structural and optical properties of ZnO thin films were studied by X-ray diffraction (XRD) and transmission spectra analysis. The results show that different factors such as Zn2+ concentration, solvent, sol stabilizer, pre-heat treatment temperature, and annealing temperature have a great impact on the structural and optical properties of ZnO thin films. 相似文献
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Emmanuel III Ricohermoso Florian Klug Helmut Schlaak Ralf Riedel Emanuel Ionescu 《International Journal of Applied Ceramic Technology》2022,19(1):149-164
This work focuses on silicon oxycarbide thin film preparation and characterization. The Taguchi method of experimental design was used to optimize the process of film deposition. The prepared ceramic thin films with a thickness of c. 500 nm were characterized concerning their morphology, composition, and electrical properties. The molecular structure of the preceramic polymers used for the preparation of the ceramic thin films as well as the thermomechanical properties of the resulting SiOC significantly influenced the quality of the ceramic films. Thus, an increase in the content of carbon was found beneficial for the preparation of crack-free thin films. The obtained ceramic films exhibited increased electrical conductivity as compared to monolithic SiOC of similar chemical composition. This was shown to correlate with the unique hierarchical microstructure of the SiOC films, which contain large oxygen-depleted particles, mainly consisting of highly graphitized carbon and SiC, homogeneously dispersed in an oxygen-containing amorphous matrix. The matrix was shown to also contain free carbon and to contribute to charge carrier transport between the highly conductive large particles. The ceramic thin films possess electrical conductivities in the range from 5.4 to 8.8 S/cm and may be suitable for implementation in miniaturized piezoresistive strain gauges. 相似文献
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液相沉积法制备光催化TiO2/SiO2复合薄膜及其表征 总被引:8,自引:0,他引:8
通过液相沉积法在较低的温度下制备了TiO2/SiO2复合薄膜,利用UV-Vis、XRD和SEM等表征手段对薄膜的透明性、物相和表面形貌进行了表征;并在紫外光照下,通过薄膜对罗丹明B水溶液的光催化降解实验,评价了沉积薄膜的光催化活性。实验结果表明,在室温下制备的液相沉积膜具有较好的光催化活性。 相似文献