Spray deposited poly-3-hexylthiophene thin film transistors

摘要

Organic thin film transistors (OTFTs) are attractive for large-area and low-cost applications such as display backplanes, environmental sensors, and radio-frequency identification circuits. However, these size and cost advantages cannot be leveraged by the most common techniques used in OTFT fabrication, i.e., spin coating or inkjet printing, because both methods are inherently slow. Spray deposition of organic thin films provides an alternative high throughput processing scheme in which large areas can be coated quickly. Although spray painted organic solar cells have been previously demonstrated, there is currently almost no work that discusses spray deposited OTFTs. In this work, fabrication of poly-3-hexylthiophene (P3HT) transistors via a spray deposition technique is investigated, and their resulting properties are compared to that of spin coated OTFTs.