Publication date: 15th December 2025
Hybrid Sn–Pb perovskite solar cells are promising candidates for tandem photovoltaic applications; however, their performance is frequently constrained by pronounced photovoltage loss and limited operational stability, primarily arising from interfacial recombination and poorly controlled crystallization processes. In this talk, I will present our systematic strategy to regulate interfacial recombination and crystallization dynamics through targeted interface engineering and growth modulation. Specifically, dedoping PEDOT:PSS effectively reduces interfacial energy mismatch and suppresses non-radiative recombination, enabling more efficient hole extraction and a marked enhancement in open-circuit voltage.[1] Further modification using cPTANMe as a tailored hole transport layer improves interfacial energetics and charge selectivity, minimizing recombination losses at the perovskite/HTL interface. [2] In parallel, a fullerene derivative is introduced as an additive to modulate crystallization behavior, refine film morphology, and stabilize the perovskite lattice, thereby mitigating interfacial degradation and enhancing device durability. The synergistic control of charge-selective interfaces and crystal growth pathways not only leads to simultaneous improvements in photovoltage and operational stability, but also provides fundamental insight into the voltage–stability trade-off in hybrid Sn–Pb perovskite systems. These findings establish practical design principles for engineering high-performance and durable narrow-bandgap absorbers, paving the way toward more efficient and reliable next-generation tandem photovoltaic technologies.
C.-T. L. acknowledges the support from the National Science and Technology Council (114-2628-E-005 -001 -), and the Innovation and Development Centre of Sustainable Agriculture from The Featured Areas Research Centre Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan.
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.