Progress in Poly (3-Hexylthiophene) Organic Solar Cells and the Influence of Its Molecular Weight on Device Performance
Wadsworth A, Hamid Z, Bidwell M, Ashraf RS, Khan JI, Anjum DH, Cendra C, Yan J, Rezasoltani E, Guilbert AAY, Azzouzi M, Gasparini N, Bannock JH, Baran D, Wu H, De Mello JC, Brabec C, Salleo A, Nelson J, Laquai F, Mcculloch I (2018)
Publication Language: English
Publication Status: Published
Publication Type: Journal article
Publication year: 2018
Journal
Publisher: WILEY-V C H VERLAG GMBH
Book Volume: 8
Article Number: 1801001
Journal Issue: 28
Abstract
Poly (3-hexylthiophene) (P3HT) was an early frontrunner in the development of donor polymers to be used in organic photovoltaics. A relatively straightforward and inexpensive synthesis suggests that it may be the most viable donor polymer to use in large-scale commercial organic solar cells. Replacing fullerenes with new electron acceptors has led to significant improvements in device performance and stability, with devices now able to exceed an efficiency of 7%. Past studies have reported a dependence of device performance on the molecular weight of the polymer in fullerene-containing blends, however, with nonfullerene acceptors now showing promise a similar study was needed. P3HT blends, with two nonfullerene acceptors (O-IDTBR and EH-IDTBR), were probed using a number of polymer batches with varying molecular weights. O-IDTBR was shown to exhibit a dependence on the polymer molecular weight, with optimal performance achieved with a 34 kDa polymer, while EH-IDTBR displayed an independence in performance with varying polymer molecular weight. Probing the thermal and morphological behavior of the P3HT:O-IDTBR blends suggests that an optimal morphology with pronounced donor and acceptor domains was only achieved with the 34 kDa polymer, and a greater degree of mixing was exhibited in the other blends, likely leading to poorer device performance.
Authors with CRIS profile
Involved external institutions
King Abdullah University of Science and Technology (KAUST) / جامعة الملك عبد الله للعلوم و التقنية
Saudi Arabia (SA)
Imperial College London / The Imperial College of Science, Technology and Medicine
United Kingdom (GB)
South China University of Technology (SCUT) / 华南理工大学
China (CN)
Stanford University
United States (USA) (US)
Saudi Arabia (SA)
Imperial College London / The Imperial College of Science, Technology and Medicine
United Kingdom (GB)
South China University of Technology (SCUT) / 华南理工大学
China (CN)
Stanford University
United States (USA) (US)
How to cite
APA:
Wadsworth, A., Hamid, Z., Bidwell, M., Ashraf, R.S., Khan, J.I., Anjum, D.H.,... Mcculloch, I. (2018). Progress in Poly (3-Hexylthiophene) Organic Solar Cells and the Influence of Its Molecular Weight on Device Performance. Advanced Energy Materials, 8(28). https://dx.doi.org/10.1002/aenm.201801001
MLA:
Wadsworth, Andrew, et al. "Progress in Poly (3-Hexylthiophene) Organic Solar Cells and the Influence of Its Molecular Weight on Device Performance." Advanced Energy Materials 8.28 (2018).
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