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从纳晶薄膜的形貌出发,根据纳晶氧化锌薄膜的几种构成归纳了几点近似说明.这几点说明旨在把纳晶薄膜和单晶薄膜区分开来,同时利用Kronig-Penney模型计算了纳晶薄膜的带尾态分布,设定了一个特征函数,给出了不同c/b值下带尾态分布图.根据这些图形的特点进一步分析了纳晶氧化锌薄膜的掺杂失效现象和薄膜成为绝缘体的条件,得出了纳晶氧化锌薄膜的电导出现的条件,也给出了制备P型氧化锌材料的条件.当纳晶晶粒达到微晶量级时,带尾态变得连续起来,回归单晶的特点.最后给出大晶粒材料具有导电优势.
Starting from the morphology of the nanocrystalline thin films, several approximations are given based on the several configurations of the nanocrystalline zinc oxide thin films. These points are intended to distinguish the nanocrystalline thin films from the single crystalline thin films, and the Kronig-Penney model The tail-end distribution of the nanocrystalline thin films is calculated and a eigenfunction is set up, and the tail-end distribution is given under different c / b values. According to the characteristics of these patterns, the doping failure of the nanocrystalline zinc oxide thin films is further analyzed Phenomenon and the condition that the thin film becomes an insulator, the conditions for the electrical conductivity of the nanocrystalline zinc oxide thin film are obtained, and the conditions for preparing the P-type zinc oxide material are also given. When the nano-crystalline grain reaches the order of the crystallite, Become continuous, return to the characteristics of single crystal.Finally, large-grained materials have the advantage of electrical conductivity.