626 / 2019-03-16 09:28:29

Improving Performance of Pentacene Field-effect Transistors by Optimizing Substrate Temperature and Active Layer Thickness

Organic field-effect transistor, pentacene, Substrate temperature, film thickness

全体主题 > Organic Electronics

High performance pentacene-based organic field-effect transistors (OFETs) with different substrates temperatures and film thicknesses were fabricated. The device performance improved visibly the substrate temperature was 69℃ and the pentacene film thickness was about 39nm. The field-effect mobility reached as high as 0.42cm2/Vs, the sub-threshold swing was 534mV/dec, and the on/off ratio was 107-108. Electrical properties and film morphology of the device indicate that the substrate temperature affects grain size of the film, and the film thickness affects the trap density of the film.