Next Article in Journal
Enhanced Photocatalytic and Antimicrobial Performance of Cuprous Oxide/Titania: The Effect of Titania Matrix
Next Article in Special Issue
White-Light Emitting Di-Ureasil Hybrids
Previous Article in Journal
Novel Thermosensitive Core–Shell Surface Molecularly Imprinted Polymers Based on SiO2 for the Selective Adsorption of Sulfamethazine
 
 
Communication

Fullerene Aggregation in Thin Films of Polymer Blends for Solar Cell Applications

1
Department of Engineering and Physics, Karlstad University, SE-651 88 Karlstad, Sweden
2
Department of Engineering and Chemical Sciences, Karlstad University, SE-651 88 Karlstad, Sweden
*
Author to whom correspondence should be addressed.
Materials 2018, 11(11), 2068; https://doi.org/10.3390/ma11112068
Received: 30 September 2018 / Revised: 18 October 2018 / Accepted: 21 October 2018 / Published: 23 October 2018
(This article belongs to the Special Issue From Macromolecules to Materials for Optoelectronic Devices)
We report on the effects of the film morphology on the fluorescence spectra for a thin film including a quinoxaline-based co-polymer (TQ1) and a fullerene derivative ([6,6]-phenyl-C71-butyric acid methyl ester—PC70BM). The ratio between the polymer and the fullerene derivative, as well as the processing solvent, were varied. Besides the main emission peak at 700 nm in the fluorescence spectra of thin films of this phase-separated blend, a broad emission band is observed with a maximum at 520–550 nm. The intensity of this emission band decreases with an increasing degree of mixing in the film and becomes most prominent in thicker films, films with high PC70BM content, and films that were spin-coated from solvents with lower PC70BM solubility. We assign this emission band to aggregated PC70BM. View Full-Text
Keywords: fullerene aggregation; organic solar cells; fluorescence; organic photovoltaics fullerene aggregation; organic solar cells; fluorescence; organic photovoltaics
Show Figures

Graphical abstract

MDPI and ACS Style

Lindqvist, C.; Moons, E.; Van Stam, J. Fullerene Aggregation in Thin Films of Polymer Blends for Solar Cell Applications. Materials 2018, 11, 2068. https://doi.org/10.3390/ma11112068

AMA Style

Lindqvist C, Moons E, Van Stam J. Fullerene Aggregation in Thin Films of Polymer Blends for Solar Cell Applications. Materials. 2018; 11(11):2068. https://doi.org/10.3390/ma11112068

Chicago/Turabian Style

Lindqvist, Camilla, Ellen Moons, and Jan Van Stam. 2018. "Fullerene Aggregation in Thin Films of Polymer Blends for Solar Cell Applications" Materials 11, no. 11: 2068. https://doi.org/10.3390/ma11112068

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop