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

Optics Express
Elena V UshakovaAlexander V Baranov

Abstract

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.

References

Mar 29, 2001·Journal of the American Chemical Society·Z A Peng, X Peng
Dec 5, 2009·Chemical Reviews·Dmitri V TalapinElena V Shevchenko
Apr 4, 2012·Annual Review of Chemical and Biomolecular Engineering·Matthew G Panthani, Brian A Korgel
Sep 24, 2013·Chemical Reviews·Illan J Kramer, Edward H Sargent
Dec 17, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Alexander V BaranovKevin Berwick

❮ Previous
Next ❯

Citations

Feb 3, 2016·Optics Express·Sergey GaponenkoUlrike Woggon
Jan 27, 2019·Scientific Reports·Evgeniia A StepanidenkoAlexander V Baranov
Apr 25, 2018·Nanoscale·Elena V UshakovaAlexander V Baranov

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Imaging in CNS

Here is the latest research on cell imaging and imaging modalities, including light-sheet microscopy, in the central nervous system.