Mg掺杂对MgZnO纳米线带隙和结构的调节

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采用第一性原理对Mg掺杂的不同尺寸MgZnO合金纳米线的晶体结构、分布行为、电子结构和波函数进行了计算和分析。研究表明,Mg在合金纳米线中偏向均匀分布并且Mg能有效地在较大范围内线性调节纳米线的带隙。此外,通过计算结合能得到MgxZn1-xO纳米线从纤锌矿结构到岩盐矿结构的相变点在x=0.65,和实验上薄膜的转变点(0.62)很接近。 The first principles were used to calculate and analyze the crystal structure, distribution behavior, electronic structure and wave function of MgZnO alloy nanowires doped with different sizes. The results show that Mg is uniformly distributed in the alloy nanowires and Mg can effectively regulate the bandgap of the nanowires in a wide range. In addition, the phase transformation point of MgxZn1-xO nanowires from wurtzite to rock salt mineral structure can be obtained by calculating the combination at x = 0.65, which is close to the experimental film transition point (0.62).
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