Photophysical and photovoltaic properties of a PPV type copolymer containing alternated fluorene and thiophene units

The synthesis and photophysical characterization of a PPV-type copolymer containing a fluorene derivative alternated with thiophene units is presented: poly(9,9’-dioctylfluorene-thiophene) (LAPPS29). Photophysical studies demonstrated that in the solid state only preformed ground state aggregates ar...

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Published inJournal of polymer research Vol. 19; no. 3; pp. 1 - 9
Main Authors Rodrigues, Paula C., Grova, Isabel, Coutinho, Douglas J., Domingues, Raquel A., Oh, Heong Sub, Seo, Jangwon, Faria, Roberto M., Atvars, Teresa D. Z., Prasad, Paras N., Akcelrud, Leni
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.03.2012
Springer Nature B.V
Subjects
Aggregates
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Copolymers
Derivatives
Industrial Chemistry/Chemical Engineering
Migration
Original Paper
Photovoltaic cells
Polymer Sciences
Segments
Solar cells
Thiophenes
Fluorene
Conjugated polymers
Thiophene
Photovoltaic cells
Photophysical properties
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Summary:The synthesis and photophysical characterization of a PPV-type copolymer containing a fluorene derivative alternated with thiophene units is presented: poly(9,9’-dioctylfluorene-thiophene) (LAPPS29). Photophysical studies demonstrated that in the solid state only preformed ground state aggregates are responsible for exciton formation. These aggregates are formed with a wide range of size distribution. The emission from isolated segments is quenched either by resonant energy transfer, or by migration processes. Also, the main photovoltaic parameters are discussed in connection with the photophysical behavior.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-012-9828-2