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Enhanced grating formation speed and amplitude of photorefractive device modified with single-walled carbon nanotubes

Abstract

We report on a fast and efficient polymeric photorefractive (PR) device by using single-walled carbon nanotubes (SWCNTs) on indium-doped tin oxide (ITO) electrodes. In presence of SWCNTs, the magnitudes of photocurrent, space charge field, and refractive index modulation increased 56.9%, 20.3%, and 22.1%, respectively, due to enhanced charge separation and facilitative charge transport. The PR grating buildup speed of PR device with SWCNTs layers was three-and-a-half times faster than that without SWCNTs layers. The SWCNTs with layer structure provided an efficient electron-transfer matrix.

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Correspondence to Jin-Woo Oh or Nakjoong Kim.

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Oh, JW., Choi, J. & Kim, N. Enhanced grating formation speed and amplitude of photorefractive device modified with single-walled carbon nanotubes. Macromol. Res. 21, 327–330 (2013). https://doi.org/10.1007/s13233-013-1117-3

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  • DOI: https://doi.org/10.1007/s13233-013-1117-3

Keywords

  • single-wall carbon nanotubes (SWCNTs)
  • grating buildup speed
  • space charge field
  • photocurrent.