A Study of Colors in Lutetium Diphthalocyanine Electrochromic Displays.

Abstract

The rare-earth diphthalocyanines have potential applications in flat-panel multicolor displays for military purposes. Lutetium diphthalocyanine electrochromic films were investigated in oxygen-free chloride solutions from pH 1 to 7 by spectroelectrochemical methods under near equilibrium conditions. Colors are reported in CIE and Munsell notations calculated from absorption spectra. The results include a comprehensive pH-potential-color diagram and a unified scheme for the electrochemical reactions of the display material. Stability zones are defined for the principal colors orange, green, light blue (two types), dark purple-blue, and violet. Yellows, blue-greens, and additional dark blues are shown to result from blending pairs of principal colors in specified proportions. Other color modifications arising from discontinuities in the electrochromic film are treated in terms of a mathematical model. The results and methodology of this study will be useful in further work to optimize the display colors and extend the cycle life.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1982
Accession Number
ADA120483

Entities

People

  • M. M. Nicholson
  • T. P. Weismuller

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Air Force
  • Air Force Facilities
  • Chemical Analysis
  • Command And Control
  • Control Systems
  • Display Systems
  • Electrochemical Reactions
  • Equations
  • Materials
  • Measurement
  • Military Research
  • Plastic Explosives
  • Protons
  • Spectra
  • Standards

Readers

  • Human-Computer Interaction (HCI).
  • Materials Science and Engineering.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.