Directly deposited quantum dot solids using a colloidally stable nanoparticle ink.

Fischer, Armin; Rollny, Lisa; Pan, Jun; Carey, Graham H; Thon, Susanna M; Hoogland, Sjoerd; Voznyy, Oleksandr; Zhitomirsky, David et al. · Adv Mater · 2013

basic_science · Level V

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Abstract

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.