Burn-in Free Nonfullerene-Based Organic Solar Cells

Journal article

Publication Details

Author(s): Gasparini N, Salvador MF, Strohm S, Heumüller T, Levchuk I, Wadsworth A, Bannock JH, de Mello JC, Egelhaaf HJ, Baran D, Mcculloch I, Brabec C
Journal: Advanced Energy Materials
Publication year: 2017
ISSN: 1614-6832
eISSN: 1614-6840
Language: English


Organic solar cells that are free of burn-in, the commonly observed rapid performance loss under light, are presented. The solar cells are based on poly(3-hexylthiophene) (P3HT) with varying molecular weights and a nonfullerene acceptor (rhodanine-benzothiadiazole-coupled indacenodithiophene, IDTBR) and are fabricated in air. P3HT:IDTBR solar cells light-soaked over the course of 2000 h lose about 5% of power conversion efficiency (PCE), in stark contrast to [6,6]-Phenyl C61 butyric acid methyl ester (PCBM)-based solar cells whose PCE shows a burn-in that extends over several hundreds of hours and levels off at a loss of ≈34%. Replacing PCBM with IDTBR prevents short-circuit current losses due to fullerene dimerization and inhibits disorder-induced open-circuit voltage losses, indicating a very robust device operation that is insensitive to defect states. Small losses in fill factor over time are proposed to originate from polymer or interface defects. Finally, the combination of enhanced efficiency and stability in P3HT:IDTBR increases the lifetime energy yield by more than a factor of 10 when compared with the same type of devices using a fullerene-based acceptor instead. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

FAU Authors / FAU Editors

Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Gasparini, Nicola
Institute Materials for Electronics and Energy Technology (i-MEET)
Heumüller, Thomas Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)
Levchuk, Ievgen
Institute Materials for Electronics and Energy Technology (i-MEET)
Salvador, Michael Filipe Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)

Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials

External institutions
Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern)
Imperial College London / The Imperial College of Science, Technology and Medicine
King Abdullah University of Science and Technology (KAUST) / جامعة الملك عبد الله للعلوم و التقنية

How to cite

Gasparini, N., Salvador, M.F., Strohm, S., Heumüller, T., Levchuk, I., Wadsworth, A.,... Brabec, C. (2017). Burn-in Free Nonfullerene-Based Organic Solar Cells. Advanced Energy Materials. https://dx.doi.org/10.1002/aenm.201700770

Gasparini, Nicola, et al. "Burn-in Free Nonfullerene-Based Organic Solar Cells." Advanced Energy Materials (2017).


Last updated on 2019-11-03 at 11:19