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Armin Fischer, Lisa Rollny, Jun Pan, Graham H. Carey, Susanna M. Thon, Sjoerd Hoogland, Oleksandr Voznyy, David Zhitomirsky, Jin Young Kim, Osman M. Bakr and Edward H. Sargent Directly Deposited Quantum Dot Solids Using a Colloidally Stable Nanoparticle Ink Advanced Materials 25

Version of Record online: 12 AUG 2013 | DOI: 10.1002/adma.201302147

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We develop a photovoltaic colloidal quantum dot ink that allows for lossless, single-step coating of large areas in a manufacturing-compatible process. Our materials strategy involves a solution-phase ligand exchange to transport compatible linkers that yield 1-thioglycerol-capped PbS quantum dots in dimethyl sulfoxide with a photoluminescence quantum yield of 24%. A proof-of-principle solar cell made from the ink exhibits 2.1% power conversion efficiency.

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