Publication date: 5th November 2025
Vacuum thermal evaporation is attracting growing interest for perovskite solar cells due to its solvent-free processing and compatibility with large-area fabrication. Among vacuum-based approaches, sequential evaporation has recently achieved the highest efficiencies, yet precise control of the inorganic precursor layer remains a key challenge. Building on our previous additive-assisted co-evaporation studies, we apply this strategy to sequential vacuum evaporation by depositing PbI₂, CsI, and propylene urea (PU) prior to FAI deposition. The incorporation of PU significantly enhances the crystallinity and (00l) preferred orientation of the inorganic layer, which is transferred to the subsequently formed CsFAPbI₃ perovskite, resulting in improved overall crystallinity. Consequently, PU-assisted devices exhibit enhanced photovoltaic performance, with Jsc increasing from 20.31 to 23.37 mA cm⁻², Voc from 1.02 to 1.04 V, and PCE from 15.98% to 17.17%. These results demonstrate that additive-controlled inorganic-layer engineering is an effective route to improving device performance in vacuum-processed perovskite solar cells.Vacuum thermal evaporation is attracting growing interest for perovskite solar cells due to its solvent-free processing and compatibility with large-area fabrication. Among vacuum-based approaches, sequential evaporation has recently achieved the highest efficiencies, yet precise control of the inorganic precursor layer remains a key challenge. Building on our previous additive-assisted co-evaporation studies, we apply this strategy to sequential vacuum evaporation by depositing PbI₂, CsI, and propylene urea (PU) prior to FAI deposition. The incorporation of PU significantly enhances the crystallinity and (00l) preferred orientation of the inorganic layer, which is transferred to the subsequently formed CsFAPbI₃ perovskite, resulting in improved overall crystallinity. Consequently, PU-assisted devices exhibit enhanced photovoltaic performance, with Jsc increasing from 20.31 to 23.37 mA cm⁻², Voc from 1.02 to 1.04 V, and PCE from 15.98% to 17.17%. These results demonstrate that additive-controlled inorganic-layer engineering is an effective route to improving device performance in vacuum-processed perovskite solar cells.
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.