A 2-Terminal Perovskite/Silicon Multijunction Solar Cell Enabled By A Silicon Tunnel Junction
APPLIED PHYSICS LETTERS(2015)
摘要
With the advent of efficient high-bandgap metal-halide perovskite photovoltaics, an opportunity exists to make perovskite/silicon tandem solar cells. We fabricate a monolithic tandem by developing a silicon-based interband tunnel junction that facilitates majority-carrier charge recombination between the perovskite and silicon sub-cells. We demonstrate a 1 cm(2) 2-terminal monolithic perovskite/silicon multijunction solar cell with a V-OC as high as 1.65 V. We achieve a stable 13.7% power conversion efficiency with the perovskite as the current-limiting sub-cell, and identify key challenges for this device architecture to reach efficiencies over 25%. (C) 2015 AIP Publishing LLC.
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