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

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Abstract

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
JournalScience
Volume270
Issue number5243
Publication statusPublished - Dec 15 1995

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high gain
liquid crystals
molecules
electrons
luminous intensity
electric batteries
micrometers
electron transfer
composite materials
electric fields
liquids
ions

ASJC Scopus subject areas

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Cite this

High photorefractive gain in nematic liquid crystals doped with electron donor and acceptor molecules. / Wiederrecht, Gary P.; Yoon, Beth A.; Wasielewski, Michael R.

In: Science, Vol. 270, No. 5243, 15.12.1995, p. 1794-1797.

Research output: Contribution to journalArticle

Wiederrecht, Gary P. ; Yoon, Beth A. ; Wasielewski, Michael R. / High photorefractive gain in nematic liquid crystals doped with electron donor and acceptor molecules. In: Science. 1995 ; Vol. 270, No. 5243. pp. 1794-1797.
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