Title

Correlation between spectroscopic and morphological properties of composite P3HT/PCBM nanoparticles studied by single particle spectroscopy

Authors

Authors

Z. J. Hu; D. Tenery; M. S. Bonner;A. J. Gesquiere

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Lumines.

Keywords

Conjugated polymer; Single molecule spectroscopy; Fluorescence; Nanoparticles; Morphology; CONJUGATED-POLYMER NANOPARTICLES; SCANNING OPTICAL MICROSCOPY; HETEROJUNCTION SOLAR-CELLS; ELECTRONIC-ENERGY TRANSFER; MOLECULE; SPECTROSCOPY; MEH-PPV; POLY(SUBSTITUTED THIOPHENE); INTERCHAIN; INTERACTIONS; PHOTOVOLTAIC CELLS; ROOM-TEMPERATURE; Optics

Abstract

We report the fabrication and characterization of composite nanoparticles consisting of a conducting polymer, poly-3-hexylthiophene (P3HT), doped with varying amounts of [6,6]-phenyl C61-butyric acid methyl ester (PCBM), a material blend that is commonly applied in bulk heterojunction organic photovoltaic devices (OPVs). Single particle spectroscopy (SPS) studies, where nanoparticles are studied one particle at a time, reveal that these nanoparticles have spectroscopic characteristics consistent with the existence of two types of crystalline nanodomains, one with a higher energy emission at 660 nm and one with a lower energy emission at 720 nm. In addition, the occurrence of emission at lower peak energy increases with increasing PCBM doping levels, and the intensity of the lower energy peak emission increases with respect to the higher energy peak emission as well. These data reveal a PCBM concentration dependent formation of two types of P3HT crystalline nanodomains in P3HT/PCBM composite nanoparticles, where the lower energy crystal structure becomes more favored with higher PCBM concentration. This work provides a molecular scale insight in the correlation between changes in morphology of conjugated polymer materials with different weight percentages of fullerene dopants. (C) 2009 Elsevier B.V. All rights reserved.

Journal Title

Journal of Luminescence

Volume

130

Issue/Number

5

Publication Date

1-1-2010

Document Type

Article

DOI Link

http://dx.doi.org/10.1016/j.jlumin.2009.11.031

Language

English

First Page

771

Last Page

780

WOS Identifier

WOS:000276115600007

ISSN

0022-2313

Recommended Citation

"Correlation between spectroscopic and morphological properties of composite P3HT/PCBM nanoparticles studied by single particle spectroscopy" (2010). Faculty Bibliography 2010s. 274.
https://stars.library.ucf.edu/facultybib2010/274