Shenzhen-based perovskite developer SolaEon has announced that it has achieved an energy conversion efficiency of 27.87% for a single-junction perovskite solar cell, which it claims is a new world record for this device category.
According to company information and local media reports, the result was certified by China’s National Photovoltaic Industry Metrology and Testing Center (NPVM), a state-accredited testing body often cited in third-party certification announcements.
The reported efficiency was achieved on a unit cell with an active area of 0.076 cm², placing the device in the laboratory research category. The cell was also found to achieve a fill factor of 87.61%.
The company and Chinese media described the result as part of an ongoing efficiency drive at the lab, noting that SolaEon has reported multiple perovskite-related record updates in recent years.
In previous announcements, the company announced module-scale certification results verified by NPVM in June 2025. A 1.2 m x 0.6 m single-junction perovskite module reportedly achieved an efficiency of 20.7% over its entire 0.72 m² area, equivalent to an output power of 149 W. Measured over an illuminated area of 0.64 m², the same module recorded an efficiency of 21.88%, which corresponds to 140 W.
While the announcement highlights continued progress toward the theoretical efficiency limit for single-junction perovskite cells, often quoted at around 33%, the reported result remains a laboratory-scale result. Significant challenges remain before such performance levels can be translated into commercially viable products.
SolaEon describes itself as a Shenzhen-based specialist in photovoltaic research and commercialization of perovskite. Publicly available company materials highlight repeated laboratory efficiency certifications through NPVM, as well as an intellectual property portfolio of more than 50 core patents and an R&D team of more than 100 employees.
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