Ilker Dogan | Solliance/TNO at Holst: Why does perovskite solar cell efficiency collapse when scaling up from lab spin-coating to roll-to-roll production?
05:07 - 06:25
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Why does perovskite solar cell efficiency collapse when scaling up from lab spin-coating to roll-to-roll production?
Transitioning perovskite solar cells from the laboratory to industrial production reveals a major scalability bottleneck. While small-scale lab devices routinely exceed 25% efficiency, these results rely heavily on spin-coating techniques and solvent systems that are fundamentally incompatible with high-throughput roll-to-roll manufacturing.
As the device area increases, power conversion efficiency drops sharply. Rigid cells fall from over 26% to 16%, while flexible cells see a similar decline down to 18% because spin-coating cannot produce the large-area, defect-free thin films required for commercial applications.
Overcoming this scaling cliff requires a complete redesign of the ink chemistry and deposition methods. By developing non-toxic solvent systems and optimizing slot-die coating processes, researchers aim to minimize spatial non-uniformities and flatten the scaling-loss curve.
In this short video, you can learn:
* The structural reasons behind the dramatic efficiency drop when scaling up device areas.
* Why standard laboratory solvent systems cannot be translated to roll-to-roll processing.
* The critical role of slot-die coating in replacing spin-coating for industrial viability.
š **Clip Abstract** This clip explores the severe efficiency losses encountered when transitioning perovskite solar cells from laboratory spin-coating to scalable manufacturing. It highlights the urgent need for scalable solvent systems and uniform large-area deposition techniques to bridge the lab-to-fab gap.
#PerovskitePhotovoltaics, #SlotDieCoating, #RollToRollManufacturing, #SolventEngineering, #PrintedElectronics, #FlexiblePhotovoltaics
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11:53 - 13:08
How does a patented non-contact roll-to-roll coater achieve continuous double-layer perovskite deposition?
How does a patented non-contact roll-to-roll coater achieve continuous double-layer perovskite deposition?
Scaling up flexible electronics requires advanced web handling to prevent active-layer damage. Solliance's patented roll-to-roll coating line utilizes a specialized configuration where the coated side of the flexible substrate never contacts any rollers, bypassing a major source of defect generation.
The system features a dual-slot-die coater capable of depositing two consecutive layers in a single pass. By routing the web through a 45-degree back-side furnace configuration, the system isolates the drying process to the non-cleanroom zone, optimizing cleanroom space usage while maintaining high throughput.
Running at speeds of up to 30 meters per minute, this system demonstrates real-time deposition of perovskite precursors onto PET-ITO foils. Integrated light-frame inspection allows for immediate quality control of film density and crystallization uniformity right after the annealing furnace.
In this short video, you can learn:
* The mechanics of a non-contact web path designed to protect delicate active layers.
* How a dual-coater system enables consecutive layer deposition in a single manufacturing run.
* The integration of high-speed annealing furnaces and inline optical inspection for quality control.
š **Clip Abstract** This clip showcases Solliance's patented roll-to-roll slot-die coating technology designed for high-throughput perovskite solar cell manufacturing. It demonstrates how non-contact web routing and inline thermal curing achieve uniform thin-film coatings at production speeds.
#SlotDieCoating, #PerovskiteSolarCells, #NonContactWebHandling, #InlineOpticalInspection, #RollToRollManufacturing, #FlexiblePhotovoltaics
15:19 - 17:31
Can flexible and semi-transparent perovskite modules actually survive standard industrial damp-heat and thermocycling stress tests?
Can flexible and semi-transparent perovskite modules actually survive standard industrial damp-heat and thermocycling stress tests?
Perovskite solar cells are notoriously sensitive to moisture, oxygen, and heat, making robust packaging a primary commercial hurdle. Advanced encapsulation architectures, including foil-to-foil and glass-to-foil configurations, are proving highly effective at shielding these delicate active layers.
Recent breakthrough modules have successfully passed three critical IEC stress tests: thermocycling, light soaking, and damp heat. A champion semi-transparent module retained over 92% of its initial power conversion efficiency after 1,000 hours of damp heat exposure and 200 thermal cycles.
Furthermore, scalable bifacial flexible PIN-type cells have achieved over 97% bifaciality. This means they can capture reflected light from the rear side almost as efficiently as direct light from the front, yielding a massive boost in overall real-world power generation.
In this short video, you can learn:
* The performance of glass-foil and foil-foil encapsulation strategies under harsh environmental testing.
* The survival rates of perovskite modules after 1,000 hours of standard damp heat and thermal cycling.
* The strategic advantage and efficiency boost of producing highly bifacial flexible cells.
š **Clip Abstract** This clip presents the long-term stability and reliability milestones of encapsulated perovskite solar modules under industrial stress tests. It details how advanced packaging and bifacial designs ensure these flexible cells can survive harsh real-world outdoor conditions.
#PerovskitePhotovoltaics, #BifacialPerovskites, #BarrierEncapsulation, #DampHeatTesting, #FlexibleElectronics, #PrintedElectronics