Siloxene: Chemical quantum confinement due to oxygen in a silicon matrix.
Siloxene: Chemical quantum confinement due to oxygen in a silicon matrix.
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DOI：
10.1103/physrevlett.69.2531
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发表时间：
1992-10
影响因子：
8.6
通讯作者：
Peter Deák;M. Rosenbauer;M. Stutzmann;Jörg Weber;M. Brandt
中科院分区：
文献类型：
--
作者：
Peter Deák;M. Rosenbauer;M. Stutzmann;Jörg Weber;M. Brandt
Siloxene (${\mathrm{Si}}_{6}$${\mathrm{O}}_{3}$${\mathrm{H}}_{6}$) and its derivatives show strong visible luminescence. By applying semiempirical quantum chemical calculations to the siloxene structure, we demonstrate that the presence of oxygen in a planar array of silicon atoms results in molecular orbitals confined to Si rings or chains which are responsible for the luminescence properties. Our results on the optical and vibrational properties of siloxene support earlier experimental results identifying siloxenelike structures as the luminescent agent in porous silicon.
