Confinement effects of CdSe nanocrystals intercalated into mesoporous silica

Shu Fang Chen; Chuan-Pu Liu; Andrei A. Eliseev; Dmitry I. Petukhov; Sandip Dhara

doi:10.1063/1.3340903

Confinement effects of CdSe nanocrystals intercalated into mesoporous silica

Shu Fang Chen, Chuan-Pu Liu, Andrei A. Eliseev, Dmitry I. Petukhov, Sandip Dhara

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

7 Citations (Scopus)

Abstract

CdSe nanocrystals are intercalated into ordered hexagonal arrays of mesoporous silica. The nanocrystals are clearly confined in the channels and their size was estimated to be consistent with the pore size. Transmission electron microscopy suggests that CdSe nanocrystals have a spherical morphology and are stabilized from aggregation after intercalation. The shift of the longitudinal optical bands in the Raman spectra is caused by a combination of phonon confinement and strain effects from the compressed lattice of the intercalated CdSe nanocrystals and the experimental results agree well to the theoretical consideration.

Original language	English
Article number	101908
Journal	Applied Physics Letters
Volume	96
Issue number	10
DOIs	https://doi.org/10.1063/1.3340903
Publication status	Published - 2010 Mar 26

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3340903

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abstract = "CdSe nanocrystals are intercalated into ordered hexagonal arrays of mesoporous silica. The nanocrystals are clearly confined in the channels and their size was estimated to be consistent with the pore size. Transmission electron microscopy suggests that CdSe nanocrystals have a spherical morphology and are stabilized from aggregation after intercalation. The shift of the longitudinal optical bands in the Raman spectra is caused by a combination of phonon confinement and strain effects from the compressed lattice of the intercalated CdSe nanocrystals and the experimental results agree well to the theoretical consideration.",

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AU - Liu, Chuan-Pu

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AU - Petukhov, Dmitry I.

AU - Dhara, Sandip

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N2 - CdSe nanocrystals are intercalated into ordered hexagonal arrays of mesoporous silica. The nanocrystals are clearly confined in the channels and their size was estimated to be consistent with the pore size. Transmission electron microscopy suggests that CdSe nanocrystals have a spherical morphology and are stabilized from aggregation after intercalation. The shift of the longitudinal optical bands in the Raman spectra is caused by a combination of phonon confinement and strain effects from the compressed lattice of the intercalated CdSe nanocrystals and the experimental results agree well to the theoretical consideration.

AB - CdSe nanocrystals are intercalated into ordered hexagonal arrays of mesoporous silica. The nanocrystals are clearly confined in the channels and their size was estimated to be consistent with the pore size. Transmission electron microscopy suggests that CdSe nanocrystals have a spherical morphology and are stabilized from aggregation after intercalation. The shift of the longitudinal optical bands in the Raman spectra is caused by a combination of phonon confinement and strain effects from the compressed lattice of the intercalated CdSe nanocrystals and the experimental results agree well to the theoretical consideration.

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