Organic thin film transistors-electronics anywhere

Organic thin film transistor (OTFT) device performance now rivals or exceeds that of amorphous silicon devices, and low OTFT process temperatures allow fabrication on a range of surfaces including cloth, paper, or polymeric substrates. Potential applications for organic TFTs include pixel access devices in active matrix displays, and low cost electronics for smart cards or merchandise tags. OTFTs have been demonstrated using a variety of organic semiconductors, including both polymers and small molecule materials. To date, OTFTs fabricated using pentacene as the active layer material have shown the best performance. Pentacene OTFTs on rigid substrates have demonstrated carrier field-effect mobility greater than 3 cm²/V-s, subthreshold slope less than 0.4 V/decade, near-zero threshold voltage, and on/off current ratio larger than 10⁸