Publication date: 15th December 2025
Luminescence-based optical imaging is a powerful, contactless, and non-destructive tool for investigating halide perovskite materials and solar cells across all stages of their development. In this talk, I will present how multimodal photoluminescence techniques enable microscopic, quantitative insights into perovskite stability, optoelectronic properties, and device performance. First, I will examine the response of halide perovskites to external stressors such as humidity and X-ray illumination, highlighting the emergence of self-healing behaviour after irradiation. I will then demonstrate how quantitative photoluminescence imaging links fundamental optoelectronic properties to device-level performance, with particular emphasis on interfacial passivation using organic cations to suppress non-radiative recombination. These methods are also extensible to the characterization of larger devices. We demonstrate this by applying a quantitatively calibrated hyperspectral PL/EL imaging approach to a 64 cm² perovskite mini-module, enabling spatially resolved EQE maps derived from EL measurements. This multimodal method reveals recombination hotspots, transport bottlenecks, and series-resistance variations that drive FF and PCE heterogeneity, highlighting key upscaling losses in interconnected modules. Finally, I will introduce an unsupervised deep-learning framework that overcomes noisy data and long acquisition times of time-resolved fluorescence imaging (TR-FLIM). By combining Noise2Noise training with physics-informed modelling, the method yields high-fidelity lifetime maps from short exposures, reducing sample degradation while enabling accurate extraction of bulk and surface recombination parameters. It is therefore suitable to performe operando experiment of fragile materials.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
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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.