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Durham University

Department of Engineering

Staff Profile

Publication details for Dr Mujeeb Ullah Chaudhry

Irimia-Vladu, Mihai, Głowacki, Eric D., Troshin, Pavel A., Schwabegger, Günther, Leonat, Lucia, Susarova, Diana K., Krystal, Olga, Ullah, Mujeeb, Kanbur, Yasin, Bodea, Marius A., Razumov, Vladimir F., Sitter, Helmut, Bauer, Siegfried & Sariciftci, Niyazi Serdar (2012). Indigo - A Natural Pigment for High Performance Ambipolar Organic Field Effect Transistors and Circuits. Advanced Materials 24(3): 375-380.

Author(s) from Durham


Millenniums-old natural dye indigo - a “new” ambipolar organic semiconductor. Indigo shows balanced electron and hole mobilities of 1 × 10−2 cm2 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.