First attempt to build selenium-silicon tandem solar cells

Scientists in Denmark attempted for the first time to build a selenium-silicon tandem solar cell and found the device was immediately able to deliver a remarkable open-circuit voltage. Despite its current low efficiency levels, the new cell concept promises to reach efficiencies over 40%, according to its creators. A group of scientists led by the Technical University of Denmark has developed a tandem solar cell based on a top cell with a selenium (Se) absorber and a bottom device made of silicon (Si). The novelty of the research consisted of integrating for the first time a wide energy bandgap ...

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