Discriminating bulk versus interface shunts in organic solar cells by advanced imaging techniques

Journal article
(Original article)


Publication Details

Author(s): Karl A, Osvet A, Vetter A, Maisch P, Li N, Egelhaaf HJ, Brabec C
Journal: Progress in Photovoltaics: Research and Applications
Publisher: John Wiley and Sons Ltd
Publication year: 2019
Pages range: 1-9
ISSN: 1099-159X
Language: English


Abstract

An important aspect when upscaling organic photovoltaics from laboratory
to industrial scale is quality control. Established imaging techniques like
lock‐in
thermography or luminescence imaging are frequently used for this purpose.
While these techniques allow for the lateral detection of defects, they cannot
provide information on the vertical position of the defect in the OPV stack.
Here, we present an approach to overcome this limitation. A femtosecond‐laser is deployed to introduce well‐defined artificial calibration defects selectively
into both the interface and the bulk active layer of inverted P3HT:PCBM bulk
heterojunction cells during device fabrication. The defective cells are then
characterized using J‐V
analysis and several nondestructive imaging methods (dark lock‐in thermography, photoluminescence, and electroluminescence
imaging). The distinct response for each defect in the different imaging methods
enables us to uniquely distinguish between bulk and interface defects. This allows
to study surface recombination under most controlled conditions.


FAU Authors / FAU Editors

Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Karl, André
Institute Materials for Electronics and Energy Technology (i-MEET)
Li, Ning Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)
Maisch, Philipp
Institute Materials for Electronics and Energy Technology (i-MEET)
Osvet, Andres Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Vetter, Andreas Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)


External institutions with authors

Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern)


Research Fields

Neue Materialien und Prozesse
Research focus area of a faculty: Technische Fakultät


How to cite

APA:
Karl, A., Osvet, A., Vetter, A., Maisch, P., Li, N., Egelhaaf, H.J., & Brabec, C. (2019). Discriminating bulk versus interface shunts in organic solar cells by advanced imaging techniques. Progress in Photovoltaics: Research and Applications, 1-9. https://dx.doi.org/10.1002/pip.3121

MLA:
Karl, André, et al. "Discriminating bulk versus interface shunts in organic solar cells by advanced imaging techniques." Progress in Photovoltaics: Research and Applications (2019): 1-9.

BibTeX: 

Last updated on 2019-16-04 at 08:52

Share link