Kristen Parratt, 2013, Chemical and Biological Engineering

Kristen Parratt ’13

This summer I investigated the relationship between molecular structure and device performance in organic field-effect transistors. By blending two compounds with similar structures but different energy levels, I was able to create a range of blend ­morphologies. These showed a correlation between the blend composition and device mobility, that I then continued to investigate using Atomic Force Microscopy and Differential Scanning Calorimetry. In the end, I found that the device performance improved with more ­diffuse grain boundaries, and reached a maximum at an eutectic point. Many thanks for a wonderful summer to Professor Loo, Stephanie Lee, and the Loo Group!