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Biosensors Based on Nanomaterials and Nanodevices
book

Biosensors Based on Nanomaterials and Nanodevices

by Jun Li, Nianqiang Wu
December 2017
Intermediate to advanced content levelIntermediate to advanced
517 pages
21h 5m
English
CRC Press
Content preview from Biosensors Based on Nanomaterials and Nanodevices
21Synthesis and Characterization of Quantum Dots
structure can stabilize and maximize the uorescence of core QDs [68–71]. A robust,
larger-bandgap inorganic shell (in the type-I structure) not only passivates surface atoms
but also buries the core semiconductor in a potential energy well, thus concentrating the
charge carriers in the NC core and keeping them away from their surrounding environ-
ment [69–71]. As a result, surface defect states, trap sites, and environmental factors will
have diminished impact on the optical property of QDs [69–74].
The core-shell QDs have most commonly been achieved in a two-step procedure [45]:
initial synthesis of core NCs, followed by a purication step, and subsequent shell growth.
Via this approach, ma
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Publisher Resources

ISBN: 9781466551527