Highly luminescent nanocrystals from removal of impurity atoms residual from ion-exchange synthesis

Prashant K. Jain; Brandon J. Beberwyck; Lam Kiu Fong; Mark J. Polking; A. Paul Alivisatos

doi:10.1002/anie.201107452

Highly luminescent nanocrystals from removal of impurity atoms residual from ion-exchange synthesis

Prashant K. Jain, Brandon J. Beberwyck, Lam Kiu Fong, Mark J. Polking, A. Paul Alivisatos

Research output: Contribution to journal › Article › peer-review

Abstract

Pure crystals: Ion exchange of semiconductor nanocrystals yielded materials with poor optoelectronic properties such as low photoluminescence quantum yields. The reason for the low quantum yields of these nanocrystals are impurities at the level of a few atoms per nanocrystal. Cation-exchanged nanostructures, however, could be purified post exchange from such impurities resulting in high-quality nanocrystals (see picture).

Original language	English (US)
Pages (from-to)	2387-2390
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	51
Issue number	10
DOIs	https://doi.org/10.1002/anie.201107452
State	Published - Mar 5 2012
Externally published	Yes

Keywords

copper
impurity removal
ion exchange
luminescence
nanoparticles

ASJC Scopus subject areas

Chemistry(all)
Catalysis

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AU - Alivisatos, A. Paul

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KW - nanoparticles

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