Confinement effects of CdSe nanocrystals intercalated into mesoporous silica

被引：8
|
作者：
Chen, Shu-Fang [1 ]
Liu, Chuan-Pu [1 ]
Eliseev, Andrei A. [2 ]
Petukhov, Dmitry I. [2 ]
Dhara, Sandip [3 ]
机构：
[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan
[2] Moscow MV Lomonosov State Univ, Dept Mat Sci, Moscow, Russia
[3] Indira Gandhi Ctr Atom Res, Surface & Nanosci Div, Mat Sci Grp, Kalpakkam 603102, Tamil Nadu, India
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 11期
关键词：
aggregation; cadmium compounds; crystal morphology; II-VI semiconductors; intercalation compounds; mesoporous materials; nanostructured materials; Raman spectra; silicon compounds; transmission electron microscopy; wide band gap semiconductors; STRUCTURAL-CHARACTERIZATION; SELENIDE NANOCRYSTALS; LATTICE CONTRACTION; RAMAN-SCATTERING; QUANTUM DOTS; NANOPARTICLES; SURFACE; POLYMER; GROWTH; MCM-41;
D O I：
10.1063/1.3340903
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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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页数：3
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