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Reactions and lumin...
Reactions and luminescence in passivated Si nanocrystallites induced by vacuum ultraviolet and soft-x-ray photons
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Chao, Y (author)
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Krishnamurthy, S (author)
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Montalti, M (author)
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Lie, LH (author)
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Houlton, A (author)
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Horrocks, BR (author)
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- Kjeldgaard, Lisbeth (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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Dhanak, VR (author)
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Hunt, MRC (author)
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Siller, L (author)
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(creator_code:org_t)
- AIP Publishing, 2005
- 2005
- English.
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In: Applied Physics Reviews. - : AIP Publishing. - 1931-9401. ; 98:4
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http://dx.doi.org/10...
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http://dro.dur.ac.uk...
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https://doi.org/10.1...
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Abstract
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- Alkyl-modified silicon nanocrystallites are efficient fluorophores which are of interest for fundamental spectroscopic studies and as luminescent probes in biology because of their stability in aqueous media. In this work we have investigated these particles using scanning tunneling microscopy, synchrotron-radiation excited photoemission, and x-ray excited optical luminescence (XEOL). During the course of illumination with 145-eV photons we have monitored the evolution of the Si2p core level and, in samples which have suffered prolonged atmospheric exposure, observed in real time the growth of an extra Si2p component attributed to in situ photoinduced oxidation of the Si nanocrystallites. XEOL reveals that two emission bands are active upon soft-x-ray photon excitation and that photoluminescence intensity decreases with photon exposure, which is attributed to charge trapping within the film.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Chao, Y
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Krishnamurthy, S
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Montalti, M
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Lie, LH
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Houlton, A
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Horrocks, BR
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show more...
-
Kjeldgaard, Lisb ...
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Dhanak, VR
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Hunt, MRC
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Siller, L
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Applied Physics ...
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Journal of Appli ...
- By the university
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Lund University