Enhanced Raman Scattering of Ultramarine on Au-coated Ge/Si-nanostructures

被引：17

作者：

Klyachkovskaya, Elena ^{[1
]}

Strekal, Natalia ^{[2
]}

Motevich, Inna ^{[2
]}

Vaschenko, Svetlana ^{[1
]}

Harbachova, Anna ^{[1
]}

Belkov, Mikhail ^{[1
]}

Gaponenko, Sergey ^{[1
]}

Dais, Christian ^{[3
]}

Sigg, Hans ^{[3
]}

Stoica, Toma ^{[4
]}

Gruetzmacher, Detlev ^{[4
]}

机构：

[1] BI Stepanov Phys Inst NASB, Minsk, BELARUS

[2] Yanka Kupala Grodno State Univ, Grodno, BELARUS

[3] Paul Scherrer Inst, Villigen, Switzerland

[4] Inst Bio & Nanosyst, Julich, Germany

来源：

PLASMONICS | 2011年 / 6卷 / 02期

关键词：

Surface-enhanced Raman scattering; Self-organized Ge/Si nanostructures; Au film; Ultramarine; Overtones; Unharmonicity constants; SURFACE; IDENTIFICATION; SPECTROSCOPY; PIGMENTS; ANCIENT; DYES; SPECTRA;

D O I：

10.1007/s11468-011-9219-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Semiconductor self-assembled Ge-on-Si quantum dot structures coated with Au film were successfully employed as surface-enhanced Raman scattering (SERS) substrates to characterize ultramarine blue inorganic art pigment. To assign the bands and to reveal the enhancement mechanisms, the quantum-chemical calculations of vibration spectra of linear and cyclic model compound of SiO4 and AlO4 tetrahedra were carried out. The overtones are observed in the SERS spectra and the unharmonicity constants were estimated. The development of a series of new bands in SERS spectra of ultramarine are discussed in terms of electro-optical unharmonicity.

引用

页码：413 / 418

页数：6

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