Material Crystallinity as a Determinant of Triplet Dynamics and Oxygen Quenching in Donor Polymers for Organic Photovoltaic Devices

This paper is concerned with the photophysics of triplet excitons in conjugated donor polymers, and their quenching by molecular oxygen. These photophysics are assayed by transient absorption spectroscopy, and correlated with X‐ray diffraction measurements of relative material crystallinity. Eleven...

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Bibliographic Details
Published in:Advanced functional materials 2014-03, Vol.24 (10), p.1474-1482
Main Authors: Soon, Ying W., Shoaee, Safa, Ashraf, Raja Shahid, Bronstein, Hugo, Schroeder, Bob C., Zhang, Weimin, Fei, Zhuping, Heeney, Martin, McCulloch, Iain, Durrant, James R.
Format: Article
Language:English
Subjects:
Correlation
Correlation analysis
Crystal structure
Crystallinity
Inert
organic photovoltaics
photophysics
Polymers
Quenching
Solar cells
triplet states
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Summary:This paper is concerned with the photophysics of triplet excitons in conjugated donor polymers, and their quenching by molecular oxygen. These photophysics are assayed by transient absorption spectroscopy, and correlated with X‐ray diffraction measurements of relative material crystallinity. Eleven different donor polymers are considered, including representatives from several classes of donor polymers recently developed for organic solar cell applications. Triplet lifetimes in an inert (nitrogen) environment range from
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201302612