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The low‐cost fabrication of colloidal‐quantum‐dot (CQD) solar cells in ambient air remains elusive in many parts of the world due to high humidity. In article number 1801661, Aram Amassian and co‐workers demonstrate a simple oxygen‐doping step that enables ambient manufacturing, irrespective of seasonal humidity variations, to obtain solar cells with power conversion efficiency > 10% by blade‐coating...
Colloidal quantum dot (CQD) solar cells have risen rapidly in performance; however, their low‐cost fabrication under realistic ambient conditions remains elusive. This study uncovers that humid environments curtail the power conversion efficiency (PCE) of solar cells by preventing the needed oxygen doping of the hole transporter during ambient fabrication. A simple oxygen‐doping step enabling ambient...
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