Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP27)
Publication date: 22nd October 2026
Many of the macroscopic properties of perovskite devices are determined by their microstructure, i.e. the presence/properties of individual grain boundaries, halide phase segregation, crystal grain orientation, the presence of point/extended defects, or the millimetre-scale coverage of a charge transport layer, to name a few. Similarly, many device-relevant perovskite films are only a few hundred nanometres thick, meaning that high-quality microscopy is essential to understand and improve the basic properties of perovskite films and devices.
Due to the small length scales in perovskite films, however, microscopy techniques based on visible light are often unable to resolve relevant features, and other types of microscopies, like (scanning) transmission electron microscopy (STEM) and analytical atomic force microscopy (AFM) are needed. STEM is a powerful tool for resolving the atomic structure of crystalline materials, but the large energies involved can easily degrade the materials being studied, especially the unstable hybrid perovskites. Analytical AFM can provide nanometre-resolution measurements of surface morphology, conductivity, and surface potential, among others, but the long exposure times involved often impact the measurements if they are done in air.
In this talk, I will show how to use STEM to study the atomic properties of thermally evaporated hybrid perovskite films with minimal beam damage, which allows us to identify various important crystallographic properties.[1,2] For example, the presence of atomically coherent epitaxial interfaces between fully evaporated 2D/3D perovskites, and how 2D perovskites tend to grow selectively on areas of 3D perovskite with a high density of ordered defects.
Finally, I will show how highly localised IV-curves can be obtained using conductive AFM, which enables the study of phase segregation and its inhibition with nanometre resolution, using a technique which can be generalised to study any IV-related property of a device under various operating conditions.[3]
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.