采用常温射频磁控溅射方法在聚苯乙烯欧珀模板上生长氧化锌薄膜, 通过煅烧去除模板得到了类似纳米碗结构的氧化锌. 用SEM分析了模板和氧化锌的形貌. 实验结果表明: 模板为FCC结构的聚苯乙烯密堆小球, 氧化锌呈六角排列的纳米碗结构. XRD分析结果表明, 实验中制备的ZnO为沿(001)方向择优生长的六方晶型结构薄膜. 样品FTIR、UV-Vis和PL谱等的分析表明, 欧珀模板-氧化锌复合结构光致发光强度比除去模板后的氧化锌薄膜高4～5倍. 这可能是由于样品的微结构造成的, 其机理值得进一步研究.
By using polystyrene opal template as substrate, zinc oxide film samples were prepared by a magnetron sputtering process. The structure and optical properties of the fabricated samples were analyzed by FTIR, XRD, UV-VIS and PL spectra. The results of SEM analysis show that the PS template has a multi-layer structure consisting of periodically hexagonal array of polystyrene spheres in three dimensions and the zinc oxide film has a surface morphology arrayed by ZnO hollow hemispheres like nanobowls with high smooth and density. These imply that zinc oxide can be deposited on the template without destroying the structure of polystyrene opal template during sputtering process. Therefore the zinc oxide produced by magnetron sputtering duplicates the surface structure of the opal template. PL spectra show that the photoluminescence intensity of the composite of zinc oxide and opal template is 4--5 times stronger than that of the template removed zinc oxide film.
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