Combinatorial Investigation of Organic Thin Film Transistors

 

 

 

Leah Lucas

Dean DeLongchamp, Mentor

 

 

 

Organic semiconductors show promise in a wide variety of developing applications such as flexible displays, biosensors, photovoltaics, and organic thin film transistors (OTFTs).  Regioregular poly(3-hexylthiophene) (P3HT) is a solution processable semiconducting polymer often used as the active layer in OTFTs.  The crystalline or semicrystalline P3HT microstructure varies greatly due to changes in processing conditions such as casting solvent or spin speed.  The microstructure critically affects charge transport and the ultimate performance of the OTFT.  Combinatorial analysis is an excellent way to cover this large parameter space. Combinatorial methods allow us to use gradients to probe P3HT processing conditions in a more systematic and thorough manner.  Gradients in dielectric layer surface energy, film thickness and annealing temperature are used to develop correlations between processing and OTFT characteristics.

 

 

 

 

Author Information:

 

Polymers Division, MSEL

Building 224, Room B204, Mail Stop 8542

301-975-6488 (phone)

301-975-4924 (fax)

leah.lucas@nist.gov

Sigma Xi: No

Category: Materials