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Thin-film InAs/GaAs quantum dot solar cells on mechanically flexible plastic films are fabricated. A 4.1-µm-thick compound semiconductor photovoltaic layer was grown on a GaAs substrate, and then transferred onto a plastic film through a bonding technique. Our bonding scheme is mediated by a metal-epoxy agent for the realization of bonding at low temperatures (below 200 °C), enabling the use of plastic...
Quantum dot solar cells can potentially realize ultrahigh efficiencies in single p-n junction structures utilizing intermediate-level energy bands. However, so far most fabricated quantum dot solar cells have suffered from severe reduction of open-circuit voltage by incorporation of quantum dots resulting in significantly lower efficiencies than those without quantum dot. Here we fabricate a high-efficiency...
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