PVA栅绝缘层浓度对P3HT有机场效应晶体管性能的影响(英文)

Effect of Poly(vinyl alcohol) Gate Dielectric Concentration on Poly(3-hexylthiophene) Based Organic Field Effect Transistor

采用溶液制备法制备了用PVA作为绝缘层、P3HT作为有源层的有机场效应晶体管,研究了不同浓度PVA栅绝缘层对器件性能的影响。实验结果显示,以质量分数为8%的PVA溶液制备的栅绝缘层具有最好的性能,器件的场效应迁移率为0.31 cm2·V-1·s-1,阈值电压为-6 V。进一步分析了PVA栅绝缘层浓度对器件性能提高的原因,结果表明,对于制备溶液化的有机场效应晶体管,选取合适的PVA栅绝缘层浓度非常重要。

Poly(3-hexylthiophene) based organic field effect transistors with poly(vinyl alcohol) gate dielectrics were fabricated by solution process. The effects of PVA gate dielectrics concentration on the performance of the devices were investigated. The experimental results show that the device with PVA mass fraction of 8% displays the best performance, which the field-effect mobility is up to 0.31 cm2·V-1·s-1 and the threshold voltage is as low as -6 V. Furthermore, the reason for the performance improvement of the devices was analyzed. It indicates that the appropriate PVA concentration is extremely important for the solution-processed OFETs.