Ionic high-performance light harvesting and carrier transporting OPV materials

W. Maes; T. Ghoos; J. Kesters; J. Drijkoningen; W. Vanormelingen; O. Malinkiewicz; H. J. Bolink; L. Lutsen; J. Manca; D. Vanderzande

doi:10.1117/12.2023859

17 October 2013 Ionic high-performance light harvesting and carrier transporting OPV materials

W. Maes, T. Ghoos, J. Kesters, J. Drijkoningen, W. Vanormelingen, O. Malinkiewicz, H. J. Bolink, L. Lutsen, J. Manca, D. Vanderzande

Author Affiliations +

Proceedings Volume 8830, Organic Photovoltaics XIV; 88301A (2013) https://doi.org/10.1117/12.2023859
Event: SPIE Organic Photonics + Electronics, 2013, San Diego, California, United States

Abstract

In this Proceedings paper, we report on the synthesis of a family of polythiophene-based conjugated polyelectrolytes, both homopolymers and random copolymers varying in the building block ratio and counter ions, toward a better fundamental understanding of the structure-property relations of these ionic derivatives in organic photovoltaics. One of the ionic homopolymers was successfully implemented as a donor material in fully solution-processed efficient bi-layer solar cells (up to 1.6% PCE in combination with PC₇₁BM) prepared by the low impact meniscus coating technique. On the other hand, these imidazolium-substituted polythiophenes were also applied as materials for electron transport layers (ETLs), boosting the I-V properties of PCDTBT:PC₇₁BM solar cell devices up to average PCE values of 6.2% (~20% increase), which is notably higher than for previously reported ETL materials. Advanced scanning probe microscopy techniques were used to elucidate the efficiency enhancing mechanism.

Citation Download Citation

W. Maes, T. Ghoos, J. Kesters, J. Drijkoningen, W. Vanormelingen, O. Malinkiewicz, H. J. Bolink, L. Lutsen, J. Manca, and D. Vanderzande "Ionic high-performance light harvesting and carrier transporting OPV materials", Proc. SPIE 8830, Organic Photovoltaics XIV, 88301A (17 October 2013); https://doi.org/10.1117/12.2023859

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