Time- and Polarization-Resolved Photoluminescence of Individual Semicrystalline Polythiophene (P3HT) Nanoparticles

We report on a remarkable size and internal structure dependence on time- and polarization-resolved photoluminescence (PL) from individual regioregular rrP3HT (poly-3-(hexylthiophine)) nanoparticles. For the smallest particles (∼34 nm) with relatively low crystallinity (40%), the time evolution of p...

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Bibliographic Details
Published in:The journal of physical chemistry letters 2011-09, Vol.2 (17), p.2089-2093
Main Authors: Labastide, Joelle A, Baghgar, Mina, Dujovne, Irene, Venkatraman, B. Harihara, Ramsdell, David C, Venkataraman, Dhandapani, Barnes, Michael D
Format: Article
Language:English
Subjects:
Nanops and Nanostructures
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Summary:We report on a remarkable size and internal structure dependence on time- and polarization-resolved photoluminescence (PL) from individual regioregular rrP3HT (poly-3-(hexylthiophine)) nanoparticles. For the smallest particles (∼34 nm) with relatively low crystallinity (40%), the time evolution of polarization contrast is nearly stationary; for intermediate-sized particles (∼ 65 nm), depolarization occurs on a 1–2 ns time scale. The largest and most crystalline particles studied (118 nm, 70%) show a PL depolarization on a time scale of
ISSN:1948-7185
1948-7185
DOI:10.1021/jz200958x