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Electron Stability and Negative-Tetron Luminescence in Free-Standing Colloidal n-Type CdSe/CdS Quantum Dots.

ACS nano (2017-09-16)
Kimberly H Hartstein, Christian S Erickson, Emily Y Tsui, Arianna Marchioro, Daniel R Gamelin
ABSTRACT

We examine the effects of CdS shell growth on photochemical reduction of colloidal CdSe quantum dots (QDs) and describe the spectroscopic properties of the resulting n-type CdSe/CdS QDs. CdS shell growth greatly slows electron trapping. Because of this improvement, complete two-electron occupancy of the 1S

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Trioctylphosphine, 97%
Sigma-Aldrich
1-Octanethiol, ≥98.5%