Using Fluorescence Microscopy of Oligomer Aggregates to Understand the Properties of Conjugated Polymers Used in Photovoltaic Devices

L. A. Peteanu; L. A. Peteanu; L. A. Peteanu; G. A. Sherwood; K. Zewe; J. Wildeman; J. H. Werner; A. P. Shreve

doi:10.1364/LS.2009.LSTuG1

Frontiers in Optics 2009/Laser Science XXV/Fall 2009 OSA Optics & Photonics Technical Digest
OSA Technical Digest (CD) (Optica Publishing Group, 2009),
paper LSTuG1
•https://doi.org/10.1364/LS.2009.LSTuG1

Using Fluorescence Microscopy of Oligomer Aggregates to Understand the Properties of Conjugated Polymers Used in Photovoltaic Devices

L. A. Peteanu, G. A. Sherwood, K. Zewe, J. Wildeman, J. H. Werner, and A. P. Shreve

Laser Science 2009

San Jose, California United States
11–15 October 2009
ISBN: 978-1-55752-878-0

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Optoelectronic Materials Characterization (LSTuG)

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L. A. Peteanu, G. A. Sherwood, K. Zewe, J. Wildeman, J. H. Werner, and A. P. Shreve, "Using Fluorescence Microscopy of Oligomer Aggregates to Understand the Properties of Conjugated Polymers Used in Photovoltaic Devices," in Frontiers in Optics 2009/Laser Science XXV/Fall 2009 OSA Optics & Photonics Technical Digest, OSA Technical Digest (CD) (Optica Publishing Group, 2009), paper LSTuG1.

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Abstract

Chain aggregation in electroluminescent polymers such as MEH-PPV has a profound effect on their emission and charge transport characteristics. Here we present studies of aggregates of shorter-chain oligomers of MEH-PPV, CN-PPV, and polythiophene that exhibit highly structured emission both at the bulk and single aggregate level. Trends are seen in the emission intensity, fluorescence lifetimes, and Franck-Condon structure as a function of chain length and are modeled to obtain an understanding of the inter-molecular interactions in the aggregate species.

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