Indigo - A Natural Pigment for High Performance Ambipolar Organic Field Effect Transistors and Circuits

Irimia-Vladu M., Glowacki E. D., Troshin P. A., Schwabegger G., Leonat L., Susarova D. K., ...More

ADVANCED MATERIALS, vol.24, no.3, pp.375-381, 2012 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 24 Issue: 3
  • Publication Date: 2012
  • Doi Number: 10.1002/adma.201102619
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.375-381
  • Keywords: ambipolar semiconductors, biodegradable electronics, sustainable electronics, natural materials, MOBILITY, TRANSPORT, SHELLAC
  • Middle East Technical University Affiliated: Yes


Millennium-old natural dye indigo - a "new" ambipolar organic semiconductor. Indigo shows balanced electron and hole mobilities of 1 x 10(-2) cm(2) V-1 s-1 and good stability against degradation in air. Inverters with gains of 105 in the first and 110 in the third quadrant are demonstrated. Fabricated entirely from natural and biodegradable compounds, these devices show the large potential of such materials for green organic electronics.