Directly deposited quantum dot solids using a colloidally stable nanoparticle ink.
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.
Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.
Armin
A
Fischer
Lisa
L
Rollny
Jun
J
Pan
Graham H
GH
Carey
Susanna M
SM
Thon
Sjoerd
S
Hoogland
Oleksandr
O
Voznyy
David
D
Zhitomirsky
Jin Young
JY
Kim
Osman M
OM
Bakr
Edward H
EH
Sargent
PbS; colloidal quantum dots; ink; photovoltaics; scalable manufacturing; small mercaptans