It was also reported on the Vietnamese government portal.
LONGi announced that its self-developed monocrystalline silicon-perovskite tandem solar cell achieved a conversion efficiency of 35.5% after receiving certification from the European Solar Test Installation (ESTI), setting a new world record at the 2026 Solar Energy Innovation and Storage Conference.
Monocrystalline silicon-perovskite tandem solar cells are leading the way in next-generation ultra-high efficiency solar cell technology. The theoretical efficiency limit is up to 43%, far exceeding the Shockley-Queisser limit of 33.7% for single-junction cells.
https://www.vietnam.vn/ko/cong-nghe-pin-mat-troi-sieu-hieu-qua-cua-longi-dat-35-5
