Photoconductivity and photorefractivity of C60 and its derivative-doped nematic liquid crystal films

I. C. Khoo, Brett D. Guenther, M. V. Wood, P. H. Chen

Research output: Contribution to journalConference articlepeer-review


The electrooptical holographic grating formation effects in C60 and its derivative-doped nematic liquid crystal films were studied. C60 exhibits photoconductivity and photorefractivity effects generated in planar or homeotropic aligned nematic films. Three mechanisms for space charge field formation have been identified: the usual photorefractive effects, and the Carr-Helfrich effect associated with the liquid crystal's dielectric and conductivity anisotropies. Permanent holographic gratings written in nematic films can be turned on and off with an applied ac field via linear electro-optical effect.

Original languageEnglish (US)
Number of pages1
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
StatePublished - Jan 1 1997
EventProceedings of the 1997 Conference on Lasers and Electro-Optics, CLEO - Baltimore, MD, USA
Duration: May 18 1997May 23 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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