Researchers from the Swiss Centre for Electronics and Microtechnology (CSEM) and the Ecole Polytechnique Fédérale de Lausanne (EPFL) claim that the power conversion efficiency of a 1 cm 2 tandem perovskite-silicon solar cell has exceeded 30%, which they say is the result of such photovoltaics. device world record
In particular, they achieved an efficiency of 30.93% for a 1 cm solar cell based on a high-quality perovskite layer in solution on a planarized silicon surface, and on a cell of the same size and fabricated using hybrid steam 31.25% efficiency/solution processing technology compatible with textured silicon surfaces.
They point out that these results constitute two new world records: one for flat device architectures and one for textured device architectures. Noting that both efficiencies are certified by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL). The latter method provides higher currents and is compatible with the architecture of current industrial silicon solar cells.
These high-efficiency results now require further research and development to enable them to be scaled up to larger surface areas and ensure that these new cells can maintain stable power output over standard lifetimes on rooftops and elsewhere, the researchers said. The results show that 30 percent of the barrier can be overcome using low-cost materials and processes, which will open up new prospects for the future of photovoltaics.
