Chinese manufacturer Xiehang Energy has achieved a power conversion efficiency of over 30% for its large-area perovskite/crystalline silicon tandem solar cell, according to a report by 国际太阳能光伏网 (International Solar Photovoltaic Network) published on Wednesday.
The result was verified by an independent third-party certification body, the outlet reports. The news was shared on August 12, 2026, marking a notable milestone for the company in the field of next-generation photovoltaic technology.
Perovskite-silicon tandem cells are designed to capture a broader spectrum of sunlight than conventional single-junction silicon cells, which typically top out at around 27% efficiency in commercial use. By stacking a perovskite layer atop a silicon base, manufacturers aim to push past that ceiling without a dramatic increase in production cost.
The achievement is significant because it applies to a large-area device, not just a small laboratory sample. Many perovskite breakthroughs are demonstrated on tiny cells, but scaling up to production-sized wafers often leads to efficiency losses. Xiehang Energy's certified result suggests the company has managed to maintain high performance across a larger surface, a key step toward commercial viability.
The report from 国际太阳能光伏网 did not specify the exact cell area, the certification body involved, or a timeline for mass production. However, the news aligns with broader industry momentum. A separate report from 凤凰网 (Phoenix Net) this week highlighted how Chinese researchers are pushing perovskite technology forward, with claims that manufacturing such cells could eventually become as fast and cheap as printing a newspaper.
Industry watchers will be looking for further details from Xiehang Energy on when this large-area tandem cell will move from certified prototype to pilot production, and whether the efficiency can be maintained in real-world manufacturing conditions.
