High photorefractive gain in nematic liquid crystals doped with electron donor and acceptor molecules

Gary P. Wiederrecht, Beth A. Yoon, Michael R. Wasielewski

Research output: Contribution to journalArticle

265 Citations (Scopus)


Liquid crystalline composite materials have been prepared that are strongly photorefractive. Nematic liquid crystals were doped with both electron donor and electron acceptor molecules that undergo facile, photoinduced, electron transfer reactions to yield mobile ions. A photorefractive gain ratio of 1.88 was observed. This gain ratio was achieved with low applied electric fields (0.4 kilovolts per centimeter) requiring only a 1.5-volt battery and low light intensities (100 milliwatts per square centimeter) in samples 37 to 88 micrometers thick that showed no loss in gain over a 6-month period.

Original languageEnglish
Pages (from-to)1794-1797
Number of pages4
Issue number5243
Publication statusPublished - Dec 15 1995


ASJC Scopus subject areas

  • General

Cite this