Colloidal quantum dot photovoltaics

Colloidal quantum dot solar cells offer the possibility of combining low-cost, low-temperature solution-processing with efficient photon harvesting over the entire solar spectrum. Their quantum size effect tunability offers a path to tandem and triple-junction cells. The first solution-processed infrared solar cells were reported in 2005; the latest devices offer greater than 5% AM1.5 PCE and many paths remain for further improvement to 10% and beyond. We will review the field and its prospects.

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