Publication date: 22nd July 2026
Perovskite-based tandem solar cells surpass the efficiency limits of single-junction devices. By stacking a wide-bandgap perovskite top cell with a low-bandgap bottom cell—such as silicon or a narrow-bandgap perovskite—these architectures enable more efficient utilization of the solar spectrum. In addition to optoelectronic enhancements, achieving high power conversion efficiencies requires precise light management to maximize photo absorption at minimized losses. In my presentation, I will discuss our advancements for different perovskite-based tandem technologies to reduce parasitic absorption and reflection losses across the tandem structure. These strategies utilize both the development of novel, optimized contact materials and advanced light management strategies such as textured interfaces, anti-reflective coatings and optical spacers.
In the most used architecture, all-perovskite tandem solar cells suffer from parasitic absorption losses in the recombination layer of ultrathin gold and PEDOT:PSS, strongly reducing their optical potential. Replacing these layers is therefore of high importance to access their full optical potential. Moreover, all-perovskite tandem solar cells -being a full thin-film technology- suffer from thin-film interference losses, which can be strongly suppressed with the use of nanostructured interfaces. With these optimizations, we were able to increase the photogeneration in each subcell by 1 mA/cm² and in my presentation, I will give an outlook of how the photogeneration in all-perovskite tandem solar cells can be further increased.
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.