Optical properties of ordered superstructures formed from cadmium and lead chalcogenide colloidal nanocrystals

被引：14

作者：

Ushakova, Elena V. ^{[1
]}

Cherevkov, Sergei A. ^{[1
]}

Litvin, Aleksandr P. ^{[1
]}

Parfenov, Peter S. ^{[1
]}

Zakharov, Viktor V. ^{[1
]}

Dubavik, Aliaksei ^{[1
]}

Fedorov, Anatoly V. ^{[1
]}

Baranov, Alexander V. ^{[1
]}

机构：

[1] ITMO Univ, Fac Photon & Optoinformat, Dept Opt Phys & Modern Nat Sci, 49 Kronverkskiy Pr, St Petersburg 197101, Russia

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 02期

关键词：

PBS QUANTUM DOTS; SELF-ORGANIZATION; SUPERLATTICES; CDSE;

D O I：

10.1364/OE.24.000A58

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The optical properties of three-dimensional ordered superstructures formed on glass substrates by self-assembly of cadmium selenide or lead sulfide nanocrystals (NCs) are investigated and compared to the optical properties of the initial NC colloidal solutions. The formation of the superstructures is strongly correlated to the presence of oleic acid molecules on the surface of the NCs. It is found that the absorption band of the NCs in the superstructures is broadened and shifted to shorter wavelengths in comparison with the absorption band of the NCs in solution. The luminescence spectra of the NCs in the superstructures also differ from the spectra of the NCs in solution. The observed modification of optical properties of superstructures is a manifestation of interactions between the NCs and the chemical environment within the superstructures. (C) 2015 Optical Society of America

引用

页码：A58 / A64

页数：7

共 13 条

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