International scientists create two-sided solar cells to accumulate scattered light

Jan 13, 2021 06:26 AM ET
  • To raise the performance of solar panels, a team of scientists based in Saudi Arabia, Italy, Germany and Canada has developed a bifacial, or two-sided, tandem solar cell, constructed by combining the very best of the perovskite and silicon innovations.
International scientists create two-sided solar cells to accumulate scattered light

Out in the field, light mainly comes straight from the sunlight. Conventional tandem solar cells already convert this light into electricity extra effectively contrasted to conventional silicon-only solar cells by taking in extra wavelengths of light.

Currently, researchers at the University of Toronto's Faculty of Applied Science & Engineering-- with colleagues at King Abdullah University of Science as well as Technology (KAUST), the University of Bologna as well as the Karlsruhe Institute of Technology-- have actually understood that even more energy can be gathered utilizing a two-sided tandem setup. Light shown and spread from the ground-- referred to as "albedo"-- can also be gathered to significantly raise the current of a tandem solar cell.

The research, published today in the journal Nature Energy, describes how the team crafted the perovskite/silicon gadget to surpass the presently approved performance limitations for the tandem setup. The study's authors consist of University Professor Ted Sargent, in the Edward S. Rogers Sr. division of electric and computer engineering, and also post-doctoral researcher Yi Hou.

" By exploiting the albedo, we can now generate currents higher than in traditional tandems, without enhancing the production costs in all," said Michele De Bastiani of KAUST, co-lead writer of this research study.

The possibility for catching indirect sunshine has actually been studied in the past, yet without experimental confirmation. The researchers worked together to address the clinical and design obstacles needed to consist of indirect sunshine in the power celebration capacity of their modules.

With this knowledge, they evaluated the bifacial tandem solar cell in exterior conditions, attaining efficiencies beyond any kind of business silicon photovoltaic panel.

" Bifacial silicon-only solar cells have rapidly taken a boosting share in the photovoltaics market, as they can result in a performance gain of 20 per cent relative," claimed Stefaan De Wolf, an associate teacher of product scientific research and also design at KAUST. "Exploiting this idea in perovskite/silicon tandems now opens chances for ultra-high power generation at cost effective price."