A new study suggests that perovskite solar cells, one of the most closely watched emerging photovoltaic technologies, can be manufactured with far less stringent environmental controls than previously assumed.
The findings raise questions about the role of cleanrooms in solar production.
Perovskite solar cells are low-cost materials that are making renewable energy more accessible than ever, compared to the currently most widely used material, silicon for solar energy production.
How perovskite solar cells are resilient to dust during manufacturing
The study developed by Swansea University researchers indicates that perovskite solar cells are surprisingly resilient to dust during manufacturing.
The finding challenges the long-held assumption that perovskite cells require expensive, ultra-sterile cleanrooms like those used for silicon panels.
Published in Communications Materials at the end of last year, the study indicates that microscopic dust contamination, typically a critical failure point in semiconductor manufacturing, does not significantly impair solar device efficiency or early-stage stability.
“With the emphasis towards creating low-cost options of renewable energy, the potential ability to manufacture these solar cells in a non-cleanroom environment makes the process far more accessible where funds may be less abundant, and for better cost-effectiveness regarding upscaling to an industry level,” write the researchers in the study.
Perovskite cells vs conventional silicon-based photovoltaics
For conventional silicon-based photovoltaics, even minimal contamination can disrupt electronic pathways and reduce yield, necessitating expensive, energy-intensive facilities with strict filtration and airflow systems.
The study shows how perovskite films can form around dust particles without catastrophic performance losses.
Researchers attribute this to the material’s defect tolerance and self-organising crystal growth, which allow it to maintain charge transport properties despite structural irregularities.
The data also indicates that no immediate acceleration in degradation is linked to particulate exposure under heat and humidity stress, suggesting that relaxed environmental controls may not compromise baseline durability.
What does this mean about the cost of solar production?
For cleanroom engineers and facility designers, the implications are significant.
If perovskite manufacturing can be decoupled from ISO-classified environments, production lines could shift towards lower-cost, modular setups with reduced air handling requirements.
This could materially alter capital expenditure models and enable deployment in regions where cleanroom infrastructure is impractical.
The findings also intersect with ongoing efforts to commercialise perovskite photovoltaics at scale.
While challenges remain, particularly around long-term stability and encapsulation, the ability to process devices outside of cleanrooms could accelerate pilot-line development and distributed manufacturing strategies.
As the photovoltaic sector looks beyond silicon to next-generation materials, the study adds to a growing body of evidence that perovskites may not only reduce material costs, but also redefine the manufacturing paradigm itself.