Publication date: 21st July 2025
Understanding charge carrier dynamics and transport in halide perovskite semiconductors is essential for optimising their performance in optoelectronic applications, such as photovoltaics, light-emitting diodes, and photodetectors. Here, we employ transient photoluminescence microscopy and optical spectroscopy to directly visualize spatiotemporal carrier dynamics with high spatial and temporal resolution. We first study mixed lead-tin perovskites to elucidate the impact of compositional disorder on carrier transport. [1-5] We observe that increasing the tin-to-lead ratio raises the background hole concentration, while the most alloyed compositions exhibit the lowest diffusion coefficients, likely a consequence of alloy-induced disorder. Separately, we investigate quantum well structures to explore the effects of the quantum and dielectric confinement in thin films. [6-7] We find that confinement leads to a blue shift in optical transitions, enhanced excitonic character, and accelerated charge carrier recombination. Collectively, our results demonstrate how the spatiotemporal dynamics of charge carriers are affected by microscopic material disorder and macroscopic confinement effects, offering insights for the design of high-performance halide perovskite devices.
Agency for Science, Technology and Research (A*STAR, Singapore)
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.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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.