Flexible low-voltage pentacene memory thin-film transistors with combustion-processable Al2O3 gate dielectric and Au nanoparticles
JOURNAL OF PHYSICS D-APPLIED PHYSICS(2013)
摘要
A Au nanoparticles (NPs) embedded pentacene thin-film transistor (TFT) with solution-based Al2O3 was fabricated on a polyethersulfone substrate. The TFT for low-voltage operation within -3 V was realized with the Al2O3 dielectric film. By a combustion process for Al2O3, efficient driving of conversion reaction at low annealing temperature of 200 degrees C can be achieved and the device can be made on a plastic substrate. And, the Au NPs were deposited by the contact printing method using the polydimethylsiloxane stamp. From the electrical characteristics of the devices, a saturation mobility value of 4.25 cm(2) V-1 s(-1), threshold voltage (V-th) of similar to 0.5 V, subthreshold swing of 70 mV dec(-1) and memory window of 0.21 V at -3 V programming gate bias voltage were obtained.
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关键词
thin-film thin-film,al<sub>2</sub>o<sub>3</sub>gate dielectric,nanoparticles,low-voltage,combustion-processable
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