Publication date: 21st July 2025
Cesium lead mixed halide (CsPbI2Br) perovskite solar cells (PSCs) have attracted significant interest due to their exceptional thermal stability and optimal 1.9 eV wide-bandgap, ideal for perovskite/perovskite tandem applications. However, achieving high-performance films under low-temperature processing remains a critical challenge. While previous studies on thermally evaporated CsPbI2Br have relied on either high post-annealing temperatures (>260 °C) [1, 2] or complex multi-source deposition setups [3] to achieve desirable film morphology, we demonstrate that applying 100 °C of substrate heating during co-evaporation, combined with a mild 150 °C post-annealing step, enables the formation of stoichiometrically balanced films with enhanced crystallinity and optimized morphology. Using phenethylammonium chloride (PEACl) for surface passivation further suppresses non-radiative recombination, improving film quality and device performance. The resulting inverted (p–i–n) perovskite solar cells achieved a power conversion efficiency (PCE) of 13.21%, alongside excellent operational stability—retaining 80% of their initial efficiency after 450 hours under continuous 1-sun illumination. This work establishes a new benchmark for vacuum-deposited CsPbI2Br PSCs and underscores the potential of this low-temperature, co-evaporation-based strategy for integration into tandem and flexible photovoltaic applications.
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.