Publication date: 9th July 2025
Mobile ions are a key contributor to the degradation and instability of metal halide perovskite solar cells. Accurately quantifying their properties—such as density, mobility, and activation energy—is essential for understanding and mitigating their impact on device performance. While electrical techniques like impedance spectroscopy, fast current-voltage scans, and transient measurements are commonly used for this purpose, their interpretation often relies on assumptions about the device, and they always measure the whole stack at once. As a result, reported values for ion-related parameters vary widely across the literature.
In this talk, I will highlight the limitations of relying on individual electrical techniques and demonstrate how a combined approach—integrating multiple electrical measurements with drift-diffusion simulations—provides a more reliable and comprehensive picture of mobile ion behavior. Additionally, I will introduce a complementary optical method that enables the quantification of ion migration in perovskite layers before contact deposition, offering new opportunities for studying ion dynamics in half-stacks and individual films.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.