Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-26409
Publication type: Conference paper
Type of review: Peer review (abstract)
Title: Electro-thermal model for lock-in infrared imaging of defects in perovskite solar cells
Authors: Comi, Ennio
Knapp, Evelyne
Battaglia, Mattia
Kirsch, Christoph
Weidmann, Stefano
Jenatsch, Sandra
Hiestand, Roman
Bonmarin, Mathias
Ruhstaller, Beat
et. al: Yes
DOI: 10.4229/WCPEC-82022-2BO.8.3
10.21256/zhaw-26409
Proceedings: EU PVSEC Proceedings
Page(s): 241
Pages to: 246
Conference details: 8th World Conference on Photovoltaic Energy Conversion, Milan, Italy, 26-30 September 2022
Issue Date: 9-Dec-2022
Publisher / Ed. Institution: WIP
ISBN: 3-936338-86-8
Language: English
Subjects: Perovskite; Simulation; Modelling; Experimental method; Defect
Subject (DDC): 006: Special computer methods
621.3: Electrical, communications, control engineering
Abstract: The production of uniform layers without defects is crucial for the efficient upscaling of perovskite solar cells. To understand the origin of defects and their impact on efficiency, we compare steady-state (DC) and alternating current (AC) measurements with simulation results obtained by an electro-thermal 2D+1D finite element method (FEM) implemented in the software Laoss. The software supports the upscaling process from small- to large-area devices by solving for the potential and temperature distribution in 2D top and bottom electrode domains, which are coupled by a vertical 1D coupling law. Recently, we extended this FEM model to the frequency domain in order to study both DC and AC characteristics of solar cells. Here, we report on the extension of this frequency-dependent FEM model to the thermal domain, allowing us to calculate amplitude and phase images of solar cells that are voltagemodulated in the dark. We measured and modelled a screen-printed carbon-based hole-transporter-free perovskite solar cell with a defect, appearing as a hotspot in temperature measurements. In contrast to the traditional DLIT method using a large voltage modulation, we introduce a small-signal DLIT (SS-DLIT) imaging method which our model is capable to reproduce. Fitting thermal AC simulations to measured data, allowed to quantify the defect and examine its behaviour and origin.
URI: https://digitalcollection.zhaw.ch/handle/11475/26409
Fulltext version: Published version
License (according to publishing contract): Not specified
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Published as part of the ZHAW project: Fortschrittliche Bildanalyse und maschinelles Lernen f├╝r die PV-Qualit├Ątssicherung
Appears in collections:Publikationen School of Engineering

Files in This Item:
File Description SizeFormat 
2022_Comi-etal_Defect-imaging-perovskite-solar-cells.pdf1.26 MBAdobe PDFThumbnail
View/Open
Show full item record
Comi, E., Knapp, E., Battaglia, M., Kirsch, C., Weidmann, S., Jenatsch, S., Hiestand, R., Bonmarin, M., & Ruhstaller, B. (2022). Electro-thermal model for lock-in infrared imaging of defects in perovskite solar cells [Conference paper]. EU PVSEC Proceedings, 241–246. https://doi.org/10.4229/WCPEC-82022-2BO.8.3
Comi, E. et al. (2022) ‘Electro-thermal model for lock-in infrared imaging of defects in perovskite solar cells’, in EU PVSEC Proceedings. WIP, pp. 241–246. Available at: https://doi.org/10.4229/WCPEC-82022-2BO.8.3.
E. Comi et al., “Electro-thermal model for lock-in infrared imaging of defects in perovskite solar cells,” in EU PVSEC Proceedings, Dec. 2022, pp. 241–246. doi: 10.4229/WCPEC-82022-2BO.8.3.
COMI, Ennio, Evelyne KNAPP, Mattia BATTAGLIA, Christoph KIRSCH, Stefano WEIDMANN, Sandra JENATSCH, Roman HIESTAND, Mathias BONMARIN und Beat RUHSTALLER, 2022. Electro-thermal model for lock-in infrared imaging of defects in perovskite solar cells. In: EU PVSEC Proceedings. Conference paper. WIP. 9 Dezember 2022. S. 241–246. ISBN 3-936338-86-8
Comi, Ennio, Evelyne Knapp, Mattia Battaglia, Christoph Kirsch, Stefano Weidmann, Sandra Jenatsch, Roman Hiestand, Mathias Bonmarin, and Beat Ruhstaller. 2022. “Electro-Thermal Model for Lock-in Infrared Imaging of Defects in Perovskite Solar Cells.” Conference paper. In EU PVSEC Proceedings, 241–46. WIP. https://doi.org/10.4229/WCPEC-82022-2BO.8.3.
Comi, Ennio, et al. “Electro-Thermal Model for Lock-in Infrared Imaging of Defects in Perovskite Solar Cells.” EU PVSEC Proceedings, WIP, 2022, pp. 241–46, https://doi.org/10.4229/WCPEC-82022-2BO.8.3.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.