Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 6649 - 6657 |
| Number of pages | 9 |
| Journal | ACS Nano |
| Volume | 7 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
Cite this
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Investigation into the heterostructure interface of CdSe-based core-shell quantum dots using surface-enhanced raman spectroscopy. / Todescato, Francesco Todescato; Minotto, Alessandro; Signorini, Raffaella; Jasieniak, Jacek Jaroslaw; Bozio, Renato.
In: ACS Nano, Vol. 7, No. 8, 2013, p. 6649 - 6657.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Investigation into the heterostructure interface of CdSe-based core-shell quantum dots using surface-enhanced raman spectroscopy
AU - Todescato, Francesco Todescato
AU - Minotto, Alessandro
AU - Signorini, Raffaella
AU - Jasieniak, Jacek Jaroslaw
AU - Bozio, Renato
PY - 2013
Y1 - 2013
N2 - The structural nature of heterointerfaces in core-shell semiconductor quantum dots (QDs) plays a crucial role in tailoring their optical properties. In this work we have focused on using surface-enhanced Raman spectroscopy as a nondestructive tool to investigate the structural evolution of such interfaces in CdSe/CdS and CdSe/Cd0.5Zn0.5S colloidal QDs. A comparison between the two systems shows significant structural variation across the core-shell interfaces for the two different materials: a smooth interface for the former and an abrupt interface for the latter. This structural difference modifies the electronic structure within the QDs, which directly dictates the confinement behavior of the electrons and holes. The implications of this translate to a better understanding of why graded CdSe/CdS/Cd 0.5Zn0.5S/ZnS QDs are so lucrative for linear and nonlinear fluorescence-based applications.
AB - The structural nature of heterointerfaces in core-shell semiconductor quantum dots (QDs) plays a crucial role in tailoring their optical properties. In this work we have focused on using surface-enhanced Raman spectroscopy as a nondestructive tool to investigate the structural evolution of such interfaces in CdSe/CdS and CdSe/Cd0.5Zn0.5S colloidal QDs. A comparison between the two systems shows significant structural variation across the core-shell interfaces for the two different materials: a smooth interface for the former and an abrupt interface for the latter. This structural difference modifies the electronic structure within the QDs, which directly dictates the confinement behavior of the electrons and holes. The implications of this translate to a better understanding of why graded CdSe/CdS/Cd 0.5Zn0.5S/ZnS QDs are so lucrative for linear and nonlinear fluorescence-based applications.
UR - http://pubs.acs.org.ezproxy.lib.monash.edu.au/doi/pdf/10.1021/nn402022z
U2 - 10.1021/nn402022z
DO - 10.1021/nn402022z
M3 - Article
VL - 7
SP - 6649
EP - 6657
JO - ACS Nano
JF - ACS Nano
SN - 1936-0851
IS - 8
ER -