Mechanisms of diffusion of boron impurities in SiO2.

Mechanisms of diffusion of boron impurities in SiO2.
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硼杂质在SiO2 中的扩散机制。

DOI:
10.1103/physrevlett.90.075901
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发表时间:
2003
影响因子:
8.6
通讯作者:
A. Oshiyama
A. Oshiyama
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
M. Otani;K. Shiraishi;A. Oshiyama

文献摘要

被引文献

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我们报告的第一性原理总能量计算,澄清硼在二氧化硅中的扩散机制。我们发现,B原子根据其电荷状态的不同,具有多种稳定和亚稳定的几何构型。我们还发现,在扩散过程中的原子重排表现出丰富的键合的可行性,在SiO2和计算的活化能与实验数据一致。还提出了增强扩散。
We report first-principle total-energy calculations that clarify mechanisms of boron diffusion in SiO2. We find that a B atom takes a variety of stable and metastable geometries depending on its charge state. We also find that atomic rearrangements during the diffusion manifest a wealth of bonding feasibility in SiO2 and that the calculated activation energy agrees with the experimental data available. Recombination enhanced diffusion is also proposed.