Facile Synthesis of Solution-Processed Silica and Polyvinyl Phenol Hybrid Dielectric for Flexible Organic Transistors.

ABSTRACT: A high-quality dielectric layer is essential for organic thin-film transistors (OTFTs) operated at a low-power consumption level. In this study, a facile improved technique for the synthesis of solution-processed silica is proposed. By optimizing the synthesis and processing technique fewer pores were found on the surface of the film, particularly no large holes were observable after improving the annealing process, and the improved solution-gelation (sol-gel) SiOx dielectric achieved a higher breakdown strength (1.6 MV/cm) and lower leakage current density (10-8 A/cm2 at 1.5 MV/cm). Consequently, a pentacene based OTFT with a high field effect mobility (~1.8 cm2/Vs), a low threshold voltage (-1.7 V), a steeper subthreshold slope (~0.4 V/dec) and a relatively high on/off ratio (~105) was f

SUBMITTER: Chen X 

PROVIDER: S-EPMC7221767 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature