Charles Shaw: Graduate Student, University of Michigan Macromolecular Science and Engineering Program
Current research is focused on electronic transport in organic semiconductor materials. The mechanisms of electron transport in these materials are not well understood, and the role defect structures play in transport are, likewise, not well understood.
Materials of current interest include a number of functionalized pentacene and thienoacene (fused thiophene) derivatives which exhibit liquid-crystalliine mesophases. These liquid-crystalline mesophases provide a greater class of defect structures for study, while also making available a variety of processing routes for controlling the structure of thin films of these materials.
Structural characterization of these materials is conducted with a variety of techniques, namely transmission electron microscopy and X-ray diffraction. Electrical characerization of these materials is performed by measuring mobility of thin-film, field-effect transistors using these materials in the active layer.
Studies of these materials are conducted with collaborations with the Matzger Research Group at the University of Michigan and the Anthony Research Group at the University of Kentucky.