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Large‐Scale Programmable Synthesis of PbS Quantum Dots
Author(s) -
Preske Amanda,
Liu Jin,
Prezhdo Oleg V.,
Krauss Todd D.
Publication year - 2016
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201500909
Subject(s) - quantum dot , lead sulfide , phosphine , particle size , quenching (fluorescence) , colloid , nanotechnology , materials science , scale (ratio) , sulfide , chemistry , chemical engineering , catalysis , organic chemistry , physics , optics , engineering , quantum mechanics , fluorescence
The most common method of synthesizing colloidal quantum dots (QDs) relies on an increasing particle size through increasing reaction time. We demonstrate a synthesis where the QD size is programmable through the use of a secondary phosphine sulfide precursor. The reaction runs to thermodynamic completion, resulting in a desired PbS diameter for a given set of specific reaction conditions, with no need for reaction quenching or post‐synthesis size‐separation. Moreover, this method is shown to produce high‐quality PbS QDs on the grams scale.