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First-principles study on the local vibrational modes of nitrogen-oxygen defects in silicon

机译:硅中氮氧缺陷局部振动模式的第一性原理研究

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In this paper we investigate the interaction of nitrogen and oxygen by means of local density functional theory. While nitrogen-pair-oxygen defects (N-2-O-m) have been studied in detail previously, the existence and role of nitrogen-oxygen defects containing only one nitrogen atom (N-O-n) is still controversial. Motivated by recent infrared absorption measurements, where several new absorption lines were observed, we present first-principles studies on the ground state configuration, binding energy and local vibrational modes of NO and NO2. We suggest that the NO? defect gives rise to the experimentally observed lines at 1002, 973 and 855 cm(-1). (C) 2007 Elsevier B.V. All rights reserved.
机译:在本文中,我们通过局部密度泛函理论研究了氮与氧的相互作用。尽管先前已对氮对氧缺陷(N-2-O-m)进行了详细研究,但仅包含一个氮原子(N-O-n)的氮氧缺陷的存在和作用仍存在争议。受近期红外吸收测量的推动,其中观察到了几条新的吸收线,我们提出了关于NO和NO2的基态构型,结合能和局部振动模式的第一性原理研究。我们建议不?缺陷会在1002、973和855 cm(-1)处产生实验观察到的线。 (C)2007 Elsevier B.V.保留所有权利。

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