標題: Raman Scattering for Probing Semiconductor Nanocrystal Arrays with a Low Areal Density
作者: Milekhin, Alexander G.
Yeryukov, Nikolay A.
Sveshnikova, Larisa L.
Duda, Tatyana A.
Kosolobov, Sergey S.
Latyshev, Alexander V.
Surovtsev, Nikolay V.
Adichtchev, Sergey V.
Himcinschi, Cameliu
Zenkevich, Eduard I.
Jian, Wen-Bin
Zahn, Dietrich R. T.
電子物理學系
Department of Electrophysics
公開日期: 16-Aug-2012
摘要: We present a study of resonant and surface enhanced Raman scattering by arrays of nanocrystals (cadmium sulfide CdS, lead selenide PbSe, and zinc oxide ZnO) with various areal density fabricated by using the Langmuir-Blodgett technique and colloidal chemistry. Resonant Raman scattering by transverse, longitudinal, and surface optical (TO, LO, and SO) phonons and their overtones up to ninth order was achieved for nanocrystal (NC) arrays by adjusting the laser energy to that of the interband transitions. The resonance enhancement allowed a Raman response from arrays of NCs with a low areal density (down to 10 PbSe NCs per 1 mu m(2)) to be measured. An enhancement of Raman scattering by LO and SO modes in CdS NC arrays with a low areal density by a factor of about 730 was achieved due to the resonant surface enhanced Raman scattering effect.
URI: http://dx.doi.org/10.1021/jp210720v
http://hdl.handle.net/11536/16905
ISSN: 1932-7447
DOI: 10.1021/jp210720v
期刊: JOURNAL OF PHYSICAL CHEMISTRY C
Volume: 116
Issue: 32
起始頁: 17164
結束頁: 17168
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