Next Article in Journal
Construction of Carbon Microspheres-Based Silane Melamine Phosphate Hybrids for Flame Retardant Poly(ethylene Terephthalate)
Next Article in Special Issue
Low-Temperature Processed TiOx/Zn1−xCdxS Nanocomposite for Efficient MAPbIxCl1−x Perovskite and PCDTBT:PC70BM Polymer Solar Cells
Previous Article in Journal
d-, l- and d,l-Tryptophan-Based Polyamidoamino Acids: pH-Dependent Structuring and Fluorescent Properties
Previous Article in Special Issue
Morphology Control in a Dual-Cure System for Potential Applications in Additive Manufacturing
Open AccessArticle

Optimizing Polymer Solar Cells Using Non-Halogenated Solvent Blends

1
Flinders Institute for Nanoscale Science and Technology, Flinders University, Sturt Road, Bedford Park, Adelaide, SA 5042, Australia
2
School of Biological and Chemical Sciences, The University of South Pacific, Laucala Campus, Private mail bag, Suva Fiji
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(3), 544; https://doi.org/10.3390/polym11030544
Received: 30 November 2018 / Revised: 12 March 2019 / Accepted: 13 March 2019 / Published: 22 March 2019
(This article belongs to the Special Issue Nanotechnology of Polymers and Biomaterials)
More environmentally friendly polymer solar cells were constructed using a conjugated polymer, poly (2,5-thiophene-alt-4,9-bis(2-hexyldecyl)-4,9-dihydrodithieno[3,2-c:3′,2′h][1,5] naphthyridine-5,10-dione, PTNT, as a donor material in combination with PC71BM as an acceptor in a bulk heterojunction device structure. A non-halogenated processing solvent (o-xylene) and solvent additives that are less harmful to the environment such as 1-methoxynaphthalene (MN) and 1-phenylnaphthalene (PN) were used throughout the study as processing solvents. The most widely used halogenated solvent additives (1,8-diiodooctane (DIO) and 1-chloronaphthalene (CN)) were also used for comparison and to understand the effect of the type of solvent additives on the photovoltaic performances. Atomic force microscopy (AFM) was employed to investigate the surface morphology of the films prepared in the presence of the various additives. The best-performing polymer solar cells provided a high open-circuit voltage of 0.9 V, an efficient fill factor of around 70%, and a highest power conversion efficiency (PCE) of over 6% with the use of the eco-friendlier o-xylene/MN solvent systems. Interestingly, the solvent blend which is less harmful and with low environmental impact gave a 20% rise in PCE as compared to an earlier reported device efficiency that was processed from the chlorinated solvent o-dichlorobenzene (o-DCB). View Full-Text
Keywords: OPV; non-halogenated; environmentally friendly; morphology; solvent additive OPV; non-halogenated; environmentally friendly; morphology; solvent additive
Show Figures

Graphical abstract

MDPI and ACS Style

Kocak, G.; Gedefaw, D.; Andersson, M.R. Optimizing Polymer Solar Cells Using Non-Halogenated Solvent Blends. Polymers 2019, 11, 544.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop