A group of researchers from Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland, has achieved a higher level of operational stability for cuprous thiocyanate-based (CuSCN) perovskite solar cells. Progress in the development of the durability of the cells was realized after they were exposed to accelerated aging tests.
With a thin layer of reduced graphene oxide, performance fell by less than 5% when the cells were placed under 60°C sunlight for more than 1000 hours. The researchers claim to have achieved the highest stability levels for CuSCN perovskite to date. The cells retained 95% of their initial stability, with an efficiency level of 20%.
The EPFL scientists have conducted research on cheap and stable hole transporters for perovskite solar cells and have concluded that CuSCN stands out as a stable, efficient and cheap option. However, earlier research has produced only moderate efficiency and stability improvements.
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Stability of perovskite solar cells
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