Publication date: 21st July 2025
Over the past decade, perovskite photovoltaics have made remarkable progress, with the best lab-scale cells now achieving close to 27% power conversion efficiency. These gains come from a deeper ability to engineer and passivate the interfaces inside the cell. Yet high efficiency is only half the story: the very passivation strategies that unlock record voltages and fill factors can introduce new routes to degradation, leaving stability lagging behind. In this talk, I will trace how light- and heat-induced stresses activate instabilities at critical interfaces. One example is the thermal decomposition of ammonium-based passivation ligands that were initially chosen to suppress non-radiative recombination. Another example is halide ions migrating across the perovskite/transport-layer junction and penetrating as far as the electrode. I will also examine chemical mismatches—such as acidic hole-transport layers contacting lead-halide perovskites—that accelerate interface breakdown. Finally, I will outline emerging strategies to arrest these pathways, including diffusion barriers, thermally robust molecular passivants, and interface-benign transport materials.
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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.