Tongwei achieves 31.4% efficiency for perovskite-silicon tandem solar cell
Chinese researchers, led by a research team from PV Technology Center of Tongwei Co., Ltd, used a sequential annealing process in the fabrication of tandem solar cells, featuring a wide bandgap perovskite top cell on a fully-textured commercial crystalline silicon heterojunction bottom cell. The resulting device had a certified power conversion efficiency of 31.4%, outperforming a 29.43%-efficient control cell.
First attempt to build lead-free perovskite-CIGS tandem solar cells
Indian researchers simulated a novel pairing of a CsGeI3 lead-free halide perovskite top cell with a copper-indium-gallium-selenide bottom cell. The resulting tandem device has the potential to achieve a power conversion efficiency of 26.06%
PVFarm enhances tracker, terrain tools for large-scale PV planning
The U.S. software company has improved its single-axis tracker and fixed tilt configurators for planning large-scale projects, adding customization features and additional support for terrain-conforming designs.
Scientists design lead-free 2T all-perovskite tandem solar cell with potential 28.22% efficiency
The proposed tandem features a wide bandgap antimony-doped Cs2AgBiBr6 (specifically Cs2AgBi0.75Sb0.25Br6) top cell and a narrow bandgap formamidinium tin iodide (FASnI3) bottom device.
Improving roll-to-roll slot-die coating via machine learning
University of Sheffield researchers developed a machine learning framework to improve coating properties in a roll-to-roll slot die coating process. The work is seen as an initial step toward broader use of machine learning and related technologies to assist with optimization.
PV Hardware offers new terrain-following tracker solution
The Spain-based manufacturer announced terrain-conforming tracker support, enabling up to 2° of variation between posts. The new solution is meant to enable solar PV on more difficult sites without increasing environmental impact or construction costs.
Sinovoltaics updates financial stability ranking of energy storage manufacturers
The latest financial stability ranking has Tesla, Mustang Battery, and Solid Power holding the top three spots in a report that tracks Altmann-Z scores for 57 manufacturers over the past three years.
Chinese PV Industry Brief: Government targets energy use at polysilicon plants
China’s Ministry of Industry and Information Technology (MIIT) has launched a 2025 inspection program targeting energy consumption at 41 major polysilicon producers to curb output.
Scientists build bifacial CIS solar cell with record efficiency, power density
Researchers in South Korea have demonstrated a lower temperature process for bifacial copper, indium, selenium (CuInSe₂) solar cells with a rear-side efficiency of 8.44% and 15.30% on the front. The device has been developed for applications in tandem solar cells.
Glass-free PV modules tested on bulk cargo ships
Japan’s Eco Marine Power announced a trial of an integrated solar PV system aboard a bulk cargo ship to demonstrate both practicality and performance. It features glass-free monocrystalline silicon modules from U.S.-based Merlin Solar Technologies.
