摘要
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.
Transparent zinc oxide (ZnO) films were prepared on ZnWO4 crystal by sol-gel technique. Surface morphology of ZnO films were observed with optical microscope. The results of show that ZnO films are formed in three different stages from nucleation on surface, grain growth to island formation. Because ZnO crystal nucleus were grown under non-equilibrium condition, it is inevitable that dendrite growth, fractal growth and spinodal decomposition phenomenon are involved in the growing process.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第3期1358-1362,共5页
Acta Physica Sinica
基金
中国科学院化学研究所光化学开放实验室基金资助的课题.~~
关键词
氧化锌薄膜
成核
枝晶生长
分形生长
失稳分解
zinc oxide films, nucleation, dendrite growth, fractal growth, spinodal decomposition