INVESTIGATION OF THE PHOTOPOLYMERIZATION PROCESS.

Abstract

Phenol sulphonphthalein and cyanine dyes were found to be sensitizers for zinc oxide photoconductive coatings. Coatings sensitized with Rose Bengal, Eosin Y, Bromophenol Blue and Bromocresol Green exhibited two photocurrent peaks, with a total exposure time of 3 to 4 seconds in the fastest systems. Higher photocurrents are produced in a system containing a monomer composition on a aluminum instead of only an aluminum sheet as counterelectrode. Sensitivity of the sandwich was doubled when zinc oxide coatings were sensitized with Rose Bengal and Bromophenol Blue. An imagewise resist is produced using sodium nitrate as the electrochemical catalyst, and zinc oxide as the photoconductor. Thinner photoconductive layers generally result in higher speed. Phosphorescent zinc cadmium sulfide did not show any photoconductivity, but a fluorescent variety of this phosphor was weakly photoconductive. Monomer concentration appears to have little or no effect on the speed of the sandwich. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1966
Accession Number
AD0477954

Entities

People

  • Albert S. Deutsch
  • Edward Cerwonka

Organizations

  • GAF

Tags

DTIC Thesaurus Topics

  • Aluminum
  • Catalysts
  • Chemical Compounds
  • Colorants
  • Compound Semiconductors
  • Cyanine Dyes
  • Dyes
  • Electronics
  • Indicator Dyes
  • Phosphors
  • Photoconductivity
  • Photoconductors
  • Semiconductors
  • Sensitivity
  • Solid State Electronics

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Materials Science and Engineering.
  • Surface Engineering/Surface Coating Technology.