Photodegradation of Si-PCPDTBT:PCBM active layer for organic solar cells applications: A surface and bulk investigation

Tournebize A, Seck M, Vincze A, Distler A, Egelhaaf HJ, Brabec C, Rivaton A, Peisert H, Chasse T (2016)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Solar Energy Materials and Solar Cells Elsevier

Publisher: Elsevier

Book Volume: 155

Pages Range: 323-330

DOI: 10.1016/j.solmat.2016.06.026

Abstract

The photooxidation of a polymer blend film used in efficient solar cells based on poly[(4,40-bis(2-ethylhexyl)dithieno[3,2-b:20,30- d]silole)-2,6-diylalt-(2,1,3-benzothiadiazole)-4,7-diyl], (Si-PCPDTBT) and [6,6]-phenyl-C71-butyric acid methyl (PC70BM) has been investigated. A set of experiments from complementary techniques was developed to monitor the modifications during ageing that occur not only in the bulk but also at the surface. The surface analyses were performed by X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM), and the bulk analyses by UV–visible spectroscopy and infrared (IR) spectroscopy. The results reveal that the silicon bridge atom is the first target of degradation. We have identified the existence of a photooxidation profile within the 300 nm thick film. Such a heterogeneous degradation was confirmed by time-of-flight secondary ion mass spectrometry (TOF-SIMS) depth profiling.

Authors with CRIS profile

Andreas Distler Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Eberhard Karls Universität Tübingen DE Germany (DE) International Laser Centre Bratislava SI Slovenia (SI) BELECTRIC OPV GmbH DE Germany (DE) Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern) DE Germany (DE) L’université Blaise Pascal (L'UBP) / Blaise Pascal University FR France (FR)

How to cite

APA:

Tournebize, A., Seck, M., Vincze, A., Distler, A., Egelhaaf, H.-J., Brabec, C.,... Chasse, T. (2016). Photodegradation of Si-PCPDTBT:PCBM active layer for organic solar cells applications: A surface and bulk investigation. Solar Energy Materials and Solar Cells, 155, 323-330. https://dx.doi.org/10.1016/j.solmat.2016.06.026

MLA:

Tournebize, Aurelien, et al. "Photodegradation of Si-PCPDTBT:PCBM active layer for organic solar cells applications: A surface and bulk investigation." Solar Energy Materials and Solar Cells 155 (2016): 323-330.

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