SolaEon has announced it has achieved what it claims to be a new world record: 27.87% efficiency for a single‑junction perovskite solar cell, certified by China’s National Photovoltaic Industry Metrology and Testing Center (NPVM). The record cell reaches 27.87% power conversion efficiency on a 0.076 cm² device, which means it is in the lab‑scale category, and has a high 87.61% fill factor.
This achievement is seen as part of an ongoing laboratory efficiency drive, noting that SolaEon has reported multiple perovskite-related record updates in recent years. However, while this can be seen as a step toward the theoretical efficiency limit for single-junction perovskite cells, often cited at around 33%, the reported record remains a laboratory-scale result. Significant challenges remain before such performance levels can be translated into commercially viable products.
In April 2025, the company also announced all‑perovskite tandem devices exceeding 31% efficiency. In June 2025, a 1.2 m × 0.6 m single‑junction perovskite module was certified at 20.7% efficiency over its full 0.72 m² area (149 W) and 21.88% over the 0.64 m² illuminated area (140 W), marking one of the first times a perovskite module of this scale surpassed 20% full‑area efficiency. In September 2025, SolaEon announced that its independently developed single-junction perovskite PV module achieved a record-efficiency of 25.27% on a 0.72 m2 sample area in stabilized testing, with reverse-scan efficiency reaching 25.47%.
