Identification of defects in perovskite solar modules by combining modeling and experimental measurement of electroluminescence

Celia Aider; Sébastien Jutteau; Jean Rousset; Daniel Ory

doi:10.1117/12.2578606

5 March 2021 Identification of defects in perovskite solar modules by combining modeling and experimental measurement of electroluminescence

Celia Aider, Sébastien Jutteau, Jean Rousset, Daniel Ory

Author Affiliations +

Proceedings Volume 11681, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices X; 1168110 (2021) https://doi.org/10.1117/12.2578606
Event: SPIE OPTO, 2021, Online Only

Conference Poster

Abstract

After around 10 years of research, perovskite cells are one of the most promising technologies in the field of photovoltaic. Despite this, there are still hurdles to overcome, such as stability and inhomogeneities in upscale processes, before it can be commercialized. It is therefore necessary to find a protocol to provide a quality assessment of the perovskite cells and identify the type of defects present inside. Electroluminescence (EL) imaging is an ideal candidate to meet these requirements, as it allows defect detection through the application of a voltage/current. We performed electroluminescence characterization on perovskite cells and modules fabricated at IPVF and showing efficiencies between 14 and 18%. We observed unusual behaviors such as transient phenomena, cell extinction or alternating cell luminescence. To better understand these phenomena we modeled our modules using LTSpice. We managed to reproduce these experimental behaviors by varying parameters such as shunt resistance or recombination rate and observing their effect on modeled EL intensity. Moreover, we can also identify which type of defect is predominant according to the applied voltage. Thanks to this work, we determined a precise protocol to link certain electroluminescent behaviors of the module to a specific physical parameter failure and to their potentially related synthesis defect. To go further, we are working on a 2D version of the model that will allow us to a better understanding of the effect of local inhomogeneities inside a larger cell in larger modules.

Citation Download Citation

Celia Aider, Sébastien Jutteau, Jean Rousset, and Daniel Ory "Identification of defects in perovskite solar modules by combining modeling and experimental measurement of electroluminescence", Proc. SPIE 11681, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices X, 1168110 (5 March 2021); https://doi.org/10.1117/12.2578606

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