About: Electrochemically grafted polypyrrole changes photoluminescence of electronic states inside nanocrystalline diamond     Goto   Sponge   NotDistinct   Permalink

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  • Hybrid diamond-organic interfaces are considered attractive for diverse applications ranging from electronics and energy conversion to medicine. Here we use time-resolved and time-integrated photoluminescence spectroscopy in visible spectral range (380-700 nm) to study electronic processes in H-terminated nanocrystalline diamond films (NCD) with 150 nm thin, electrochemically deposited polypyrrole (PPy) layer. We observe changes in dynamics of NCD photoluminescence as well as in its time-integrated spectra after polymer deposition. The effect is reversible. We propose a model where the PPy layer on the NCD surface promotes spatial separation of photo-generated charge carriers both in non-diamond carbon phase and in bulk diamond. By comparing different NCD thicknesses we show that the effect goes as much as 200 nm deep inside the NCD film. (C) 2014 AIP Publishing LLC.
  • Hybrid diamond-organic interfaces are considered attractive for diverse applications ranging from electronics and energy conversion to medicine. Here we use time-resolved and time-integrated photoluminescence spectroscopy in visible spectral range (380-700 nm) to study electronic processes in H-terminated nanocrystalline diamond films (NCD) with 150 nm thin, electrochemically deposited polypyrrole (PPy) layer. We observe changes in dynamics of NCD photoluminescence as well as in its time-integrated spectra after polymer deposition. The effect is reversible. We propose a model where the PPy layer on the NCD surface promotes spatial separation of photo-generated charge carriers both in non-diamond carbon phase and in bulk diamond. By comparing different NCD thicknesses we show that the effect goes as much as 200 nm deep inside the NCD film. (C) 2014 AIP Publishing LLC. (en)
Title
  • Electrochemically grafted polypyrrole changes photoluminescence of electronic states inside nanocrystalline diamond
  • Electrochemically grafted polypyrrole changes photoluminescence of electronic states inside nanocrystalline diamond (en)
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  • Electrochemically grafted polypyrrole changes photoluminescence of electronic states inside nanocrystalline diamond
  • Electrochemically grafted polypyrrole changes photoluminescence of electronic states inside nanocrystalline diamond (en)
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  • RIV/00216208:11320/14:10286169!RIV15-MSM-11320___
http://linked.open...avai/riv/aktivita
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  • I, P(GBP108/12/G108), P(LM2011026), S
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  • 22
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  • 14122
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  • RIV/00216208:11320/14:10286169
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  • phase; luminescence; spectroscopy; carbon; thin-films (en)
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  • US - Spojené státy americké
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  • [F0FD5EEF2F59]
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  • Journal of Applied Physics
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  • 116
http://linked.open...iv/tvurceVysledku
  • Cermak, J.
  • Kromka, A.
  • Malý, Petr
  • Galář, Pavel
  • Rezek, B.
http://linked.open...ain/vavai/riv/wos
  • 000346266300012
issn
  • 0021-8979
number of pages
http://bibframe.org/vocab/doi
  • 10.1063/1.4903937
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  • 11320
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