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

Irimia-Vladu, Mihai
Glowacki, Eric D.
Troshin, Pavel A.
Schwabegger, Guenther
Leonat, Lucia
Susarova, Diana K.
Krystal, Olga
Ullah, Mujeeb
Kanbur, Yasin
Bodea, Marius A.
Razumov, Vladimir F.
Sitter, Helmut
Bauer, Siegfried
Sariciftci, Niyazi Serdar
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.