Morphology and charge transport in conjugated polymer

Determining the relationship between charge transport and morphology is key to increasing the charge carrier mobility of conjugated polymers. This review details a fundamental study of the charge transport and morphology of regioregular poly(3-hexylthiophene) and sets out general principles for obtaining high charge carrier mobilities. The basis for this study was the finding that despite being more crystalline, low molecular weight films have a substantially lower mobility than high-MW films. An examination of this apparent contradiction is used to provide insight into how the charge carriers move through a conjugated polymer film and provide a model for charge transport.