Uhl, Alexander R.Yang, ZhibinJen, Alex K.-Y.Hillhouse, Hugh W.2018-01-182018-01-182017-01-17J. Mater. Chem. A, 2017, 5, 3214-3220http://hdl.handle.net/1773/40778Solution-processed chalcopyrite and perovskite devices of various bandgaps are combined in four- and two-terminal mechanically stacked tandem architectures. The excellent low-light performance of Cu(In,Ga)(S,Se)2 and low-bandgap CuIn(S,Se)2 cells and the high efficiency of novel NIR-transparent inverted perovskite cells with C60/bis-C60/ITO as electron transport layers, enabled stabilized two- and four- terminal tandem efficiencies up to 18.5% and 18.8%, respectively, which represents a new record for tandem devices with solution-processed chalcopyrite and perovskite absorbers.en-USCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/photovoltaicstandem solar cellsperovskitechalcopyritesolution depositionArticle