Strain in Halide Perovskites and Solar Cell Stability: Accelerated Stress Tests under Bias Voltage
The lifespan of halide perovskite solar cells (PSCs) is currently a major concern for the implementation and commercialization of the technology. Tensile and compressive strain alters the halide perovskite (HP) lattice under operando conditions, affecting PSC stability. However, the mechanisms governing strain responses are still unknown. In this work, we monitored the evolution of strain in PSCs during accelerated stability tests under continuous light irradiation and bias-voltage. Additive engineering led to a compression of the HP lattice, improving PSC stability. The temporal evolution of the HP lattice, together with the electrical response of devices employing modified and reference HP, was tracked by <i>in situ</i> X-ray diffraction, photoluminescence, and quasi <i>in situ</i> electrochemical impedance spectroscopy. Our results demonstrate a good correlation between lattice expansion (strain) and the device's current decay and stability. Additionally, and contrary to the current understanding, we observed that lattice compression in HP was not sufficient to ensure protection against degradation.
Authors
- Fanny Baumann (ORCID: https://orcid.org/0000-0003-0203-5971)
- Mónica Lira‐Cantú (ORCID: https://orcid.org/0000-0002-3393-7436)
- José Manuel Caicedo (ORCID: https://orcid.org/0000-0002-5192-4989)
- José Santiso (ORCID: https://orcid.org/0000-0003-4274-2101)
- Jessica Padilla‐Pantoja (ORCID: https://orcid.org/0000-0002-7769-7753)
- Sonia R. Raga (ORCID: https://orcid.org/0000-0002-4245-9245)
- Masoud Karimipour (ORCID: https://orcid.org/0000-0002-6619-4798)
- Á. Ibarra (ORCID: https://orcid.org/0000-0002-2420-2497)
- Emigdio Chávez‐Ángel (ORCID: https://orcid.org/0000-0002-9783-0806)
- Rémy Pouteaux
Institutions
- Institut Català de Nanociència i Nanotecnologia (ES)
Publication Details
- Journal
- ACS Energy Letters
- Published
- 2024-12-26
- DOI
- https://doi.org/10.1021/acsenergylett.4c02822
- Citations
- 16
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 3.34
Funders
- “la Caixa” Foundation
- Centres de Recerca de Catalunya
- Institut Català de Nanociència i Nanotecnologia
- European Commission
- Centro para el Desarrollo Tecnológico Industrial
- Generalitat de Catalunya
- Ministerio de Ciencia e Innovación
- Ministerio de Ciencia y Tecnología
- Fundación Bancaria Caixa d'Estalvis i Pensions de Barcelona
- Agència de Gestió d'Ajuts Universitaris i de Recerca
- Consejo Superior de Investigaciones Científicas
- European Regional Development Fund
- Agencia Estatal de Investigación
- H2020 Marie Skłodowska-Curie Actions