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- W1982102562 abstract "An order of magnitude enhancement in the intensity of visible room temperature photoluminescence (PL) from porous silicon (PS) was observed when irradiated with 10 MeV silicon ions from a pelletron source. The effect was associated with a blue shift of 70 nm. The stability of PL with respect to ambients was seen to be remarkably improved. The energy band gap determined from photoluminescence and photoreflectance measurements indicated a shift from 1.67 eV to 1.83 eV. Subsequently partial restructuring of Si - O - Si and Si - H type species into Si - OH was confirmed by infrared measurements recorded before and after irradiation. The effects have been correlated to a reduction in the extent of non radiative recombination centres as a consequence of chemical restructuring of the surface. By assuming that the restructured surface is sufficiently thick to reduce the crystallite size, the blue shift can be accounted for." @default.
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- W1982102562 date "1996-02-14" @default.
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- W1982102562 title "Improvement in the photoluminescence efficiency of porous silicon using high-energy silicon ion irradiation" @default.
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- W1982102562 doi "https://doi.org/10.1088/0022-3727/29/2/026" @default.
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