Determining exciton bandwidth and film microstructure in polythiophene films using linear absorption spectroscopy

Jenny Clark, Jui Fen Chang, Frank C. Spano, Richard H. Friend, Carlos Silva

研究成果: 雜誌貢獻期刊論文同行評審

519 引文 斯高帕斯(Scopus)

摘要

We analyze the linear absorption spectrum of regioregular poly(3-hexylthiophene) films spun from a variety of solvents to probe directly the film microstructure and how it depends on processing conditions. We estimate the exciton bandwidth and the percentage of the film composed of aggregates quantitatively using a weakly interacting H-aggregate model. This provides a description of the degree and quality of crystallites within the film and is in turn correlated with thin-film field-effect transistor characteristics.

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文章編號163306
期刊Applied Physics Letters
94
發行號16
DOIs
出版狀態已出版 - 2009

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