Electronic structure and chemical environment of silicon nanoclusters embedded in a silicon dioxide matrix
作者： Anna Zimina , Stefan Eisebitt , Wolfgang Eberhardt , Johannes Heitmann , Margit Zacharias
DOI: 10.1063/1.2193810
关键词: Atomic physics 、 Spectroscopy 、 Quantum dot 、 Exciton 、 Suboxide 、 Optoelectronics 、 Silicon 、 Silicon dioxide 、 Electronic structure 、 Materials science 、 Nanoclusters
摘要: Using photon-in photon-out soft x-ray spectroscopy, the electronic structure of silicon nanoclusters embedded in an electrically insulating SiO2 host matrix is investigated as a function nanocluster size. We find to be core-shell with crystalline Si core and thin transition layer suboxide. Effects quantum confinement are detected cores. that influence confined excitonic states manifests itself predominantly unoccupied states.
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