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采用溶胶-凝胶法在ZnWO4单晶上制备出透明的ZnO薄膜.通过光学显微镜观察了ZnO薄膜的表面形貌.实验结果表明,ZnO薄膜的形成经历了表面成核,晶粒长大和岛的形成三个不同的阶段.由于ZnO晶核是在非平衡条件下生长的,在生长过程中不可避免地出现了枝晶生长和分形生长以及失稳分解.
ZnO films were prepared by sol-gel method on ZnWO4 single crystal.The surface morphology of ZnO films was observed by optical microscope.The experimental results show that the formation of ZnO thin films has undergone surface nucleation, grain growth and island Forming three different stages.Because ZnO nuclei are grown under non-equilibrium conditions, dendrite growth and fractal growth and instability decomposition inevitably occur in the growth process.