Nicolas Vandamme | Institut Photovoltaïque d'Île-de-France (IPVF): Why are Perovskite Interface Passivations the Key to Solving Short-Circuit Current and VOC Losses?
00:12:14 - 00:13:36
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Summary of the clip:
Can molecular interface engineering unlock the ultimate efficiency limits of perovskite photovoltaics?
While optimizing the bulk optoelectronic properties of individual layers within a thin-film stack is necessary, it is no longer sufficient. High-performance device architectures are frequently bottlenecked by non-radiative recombination and charge extraction barriers localized at the heterojunction boundaries. Unmanaged interfaces often manifest directly as losses in short-circuit current density, necessitating targeted chemical passivation strategies to suppress interfacial defects.
To mitigate these carrier losses, advanced chemical modification of the perovskite precursor ink and the resulting film boundaries is proving essential. Incorporating formamidinium cations into the perovskite lattice structure, alongside the targeted application of specialized chemical additives either directly within the liquid ink formulation or as a post-deposition top-surface treatment, has demonstrated significant enhancements in both power conversion efficiency and long-term operational stability.
Accelerating the development of these high-efficiency devices requires robust, scalable processing platforms capable of rapidly screening novel passivating agents. Access to established baseline processes and device architectures allows materials developers to systematically validate new chemical additives and interfacial layers under realistic operating conditions, paving the way for high-yield, stable optoelectronic devices.
In this short video, you can learn:
* How interfacial defects and carrier recombination limit short-circuit current in thin-film stacks.
* The role of formamidinium cation incorporation and chemical additives in enhancing perovskite stability and efficiency.
* Opportunities to collaborate and validate novel passivating materials on established device fabrication processes.
📋 **Clip Abstract** The speaker discusses the critical role of interface management in thin-film stacks, noting that interfacial defects often cause short-circuit current issues. He explains how introducing formamidinium cations and other chemical additives into or on top of the perovskite ink improves device efficiency and stability, and invites collaboration to test new materials on their established processes.
🎤 Speaker: Nicolas Vandamme
🏢 Company: Institut Photovoltaïque d'Île-de-France (IPVF)
📅 Event: Perovskite Connect 2025
📍 Location: Estrel Congress Centre, Berlin (Co-located with TechBlick's Future of Electronics RESHAPED show)
🌐 Learn more at the next TechBlick event: https://www.techblick.com
#PerovskitePassivation, #AlkylammoniumSalts, #InterfacialRecombination, #VocLosses, #TandemSolarCells, #PerovskitePhotovoltaics
This is a highlight of the presentation:
Lab2fab line: A testbed for the development & testing of perovskite solar cells & modules
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00:03:48 - 00:05:09
Can Perovskite-Silicon Tandem Modules Scale Beyond the Lab to 30x60 cm² Substrates?
Can perovskite-silicon tandem pilot lines scale rapidly enough to secure European energy sovereignty?
The transition to high-efficiency photovoltaic manufacturing requires a shift from laboratory-scale cells to industrial-format tandem modules. By establishing a dedicated pilot line focused on the deposition of the perovskite top layer onto a silicon bottom cell, researchers are bridging the gap between fundamental materials science and high-throughput gigawatt manufacturing. This scaling effort centers on a standardized 30 by 60 centimeter substrate format, a critical intermediate step toward full-size commercial panels.
From a levelized cost of energy (LCOE) perspective, perovskite-on-silicon tandem architectures present a disruptive thermodynamic advantage over single-junction silicon. By leveraging the tunable bandgap of metal halide perovskites, these tandem stacks harvest the solar spectrum more efficiently without a proportional increase in manufacturing complexity. This translates directly to a lower LCOE, maximizing power output per square meter of deployed module area.
Furthermore, the thin-film nature of perovskites drastically reduces material consumption compared to traditional wafer-based technologies. This low material intensity minimizes the embodied energy of production, accelerating the carbon payback time of the modules. Scaling this technology within Europe not only supports localized high-tech manufacturing but also directly aligns with net-zero energy building (NZEB) mandates and regional decarbonization targets.
In this short video, you can learn:
* The target substrate dimensions for scaling perovskite top-layer deposition on silicon tandem stacks.
* How tandem architectures lower the levelized cost of energy (LCOE) through superior spectral utilization.
* The environmental and strategic benefits of localized, low-material-intensity photovoltaic manufacturing in Europe.
📋 **Clip Abstract**
This video clip outlines the development of a pilot line at IPVF, in partnership with Voltec Solar, dedicated to manufacturing perovskite top layers for tandem solar modules on a 30 by 60 centimeter scale. The speaker explains how this technology aims to lower the levelized cost of energy (LCOE), reduce material and energy consumption during production, and support European net-zero energy building goals.
🎤 Speaker: Nicolas Vandamme
🏢 Company: Institut Photovoltaïque d'Île-de-France (IPVF)
📅 Event: Perovskite Connect 2025
📍 Location: Estrel Congress Centre, Berlin (Co-located with TechBlick's Future of Electronics RESHAPED show)
🌐 Learn more at the next TechBlick event: https://www.techblick.com
#PerovskiteSiliconTandem, #LargeAreaPerovskites, #ThinFilmDeposition, #TandemMiniModules, #SolarPhotovoltaics, #GigawattScalePV
00:06:33 - 00:08:12
How Do We Validate a 10-Year Lifetime for Perovskites on Top of 30-Year Silicon Modules?
How Do We Validate a 10-Year Lifetime for Perovskites on Top of 30-Year Silicon Modules?
While perovskite solar cells yield impressive initial efficiencies, their long-term stability remains the primary barrier to commercialization. To match the 30-year lifetime of underlying silicon PV, the perovskite top layer must survive at least 10 years of environmental stress without catastrophic degradation, requiring rigorous validation protocols.
IPVF has built an advanced online characterization platform that continuously aggregates real-time data from indoor and outdoor aging testbeds. This systematic approach allows researchers to monitor degradation kinetics, temperature fluctuations, and humidity effects under realistic operating conditions rather than relying purely on accelerated chamber tests.
Vandamme shares encouraging stability data from a prototype module, which began at 12% efficiency and maintained a strong 11.2% efficiency after 1,600 hours of testing. This demonstrates that addressing the challenges of lifetime and scalability is actively progressing through continuous, real-time diagnostic monitoring.
In this short video, you can learn:
* The target operational lifespan required for perovskite top layers to make tandem silicon PV commercially viable.
* How IPVF's online characterization platform tracks real-time degradation across indoor and outdoor testbeds.
* Stability results demonstrating a perovskite module retaining over 93% of its initial efficiency after 1,600 hours.
📋 **Clip Abstract** IPVF has developed a real-time characterization and monitoring platform to track perovskite module degradation under indoor and outdoor conditions. The presentation highlights a prototype module maintaining 11.2% efficiency after 1,600 hours of continuous testing, demonstrating progress toward a 10-year lifetime target.
#PerovskiteSiliconTandem, #DegradationKinetics, #InSituCharacterization, #PhotovoltaicReliability, #PerovskitePhotovoltaics, #TandemSolarCells