Method of Organic Semiconductor Thin Film

Although organic thin film transistors (OTFTs) made from organic semiconductors are valued for their transparency, flexibility and low cost attributes, their sluggish response time due to slow carrier mobility limits their applications. Recently, researchers at Stanford University have developed an inexpensive method of manufacturing OTFTs that increases carrier mobility to a degree that enables high performance organic electronics. This solution based processing method, known as solution shearing, incrementally induces lattice strain to create greater electron orbital overlap between the component molecules. The method's simplicity and compatibility adds little additional costs to roll to roll shearing processes yet can improve the average mobility by four times or more. The technique can be adjusted to provide new opportunities for tuning electronic properties and is scalable to large area thin film electronics. Stanford researchers have opened the door for advancements in solar cells, flexible displays, printed chips, and other performance driven electronics.

Stage of Research
Manufactured and tested samples 1cm² to 2in² in area with an increase in carrier mobility as much as 4-10 times.