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- W2092880295 abstract "We have studied the origin of strong visible photoluminescence (PL) in a Ge/porous Si (PS) structure in terms of infrared spectroscopy and electron spin resonance (ESR). Spectral analyses indicate that the enhanced PL cannot arise from both the quantum confinement on Ge nanocrystals embedded in the pores and the chemical compound of Ge, O, and H at the surface of the porous Si formed during Ge deposition. The experimental result from ESR strongly suggests that optical transitions in the oxygen-related defect centers (nonbridging oxygen hole centers) at the interface between PS and the Ge layer are responsible for the enhanced PL." @default.
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- W2092880295 date "1999-02-08" @default.
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- W2092880295 title "On the origin of strong visible photoluminescence in a Ge/porous Si structure" @default.
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- W2092880295 doi "https://doi.org/10.1063/1.123381" @default.
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