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arXiv · 1910.04017

Antimony doped Tin Oxide/Polyethylenimine Electron Selective Contact for reliable and light soaking-free high Performance Inverted Organic Solar Cells

Efthymios Georgiou·Ioannis T. Papadas·Ioanna Antoniou·Marek F. Oszajca·Benjamin Hartmeier·Michael Rossier·Norman A. Luechinger·Stelios. A. Choulis
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Abstract

We have demonstrated a high-performance low temperature solution processed electron selective contact consisting of 10 at% antimony doped tin oxide (ATO) and the neutral polymer polyethylenimine (PEI). Inverted organic photovoltaics (OPVs) utilizing ATO/PEI as electron selective contact exhibited high power conversion efficiencies for both the reference P3HT: PCBM and the non-fullerene based P3HT- IDTBR active layer OPV material systems. Importantly it is shown that the proposed ATO/PEI carrier selective contact provides light soaking-free inverted OPVs. Furthermore, by increasing the thickness of ATO layer from 40 to 120 nm the power conversion efficiency of the corresponding inverted OPVs remain unaffected a parameter which indicates the potential of the proposed ATO/PEI carrier selective contact for high performance light-soaking-free and reliable roll-to-roll printing solutions processed inverted OPVs.

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Efthymios Georgiou, Ioannis T. Papadas, Ioanna Antoniou, Marek F. Oszajca, Benjamin Hartmeier, Michael Rossier, Norman A. Luechinger, Stelios. A. Choulis. 2019-10-09. Antimony doped Tin Oxide/Polyethylenimine Electron Selective Contact for reliable and light soaking-free high Performance Inverted Organic Solar Cells. https://doi.org/10.1063/1.5115260

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