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Among solution-processed photovoltaic materials, lead sulfide (PbS) colloidal quantum dots (QDs) possess a highly tunable bandgap and strong infrared absorption, while perovskites show extraordinary external quantum efficiency (EQE) in the visible region, which offers the opportunity to construct an ideal tandem cell of PbS QDs/perovskite.
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Gu et al. (2018) studied this question.
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