Engineering Optical Activity of Semiconductor Nanocrystals via Ion Doping

Controlling the strength of enantioselective interaction of chiral inorganic nanoparticles with circularly polarized light is an intrinsically interesting subject of contemporary nanophotonics. This interaction is relatively weak, because the chirality scale of nanoparticles is much smaller than the...

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Published inNanophotonics (Berlin, Germany) Vol. 5; no. 4; pp. 517 - 522
Main Authors Tepliakov, Nikita V., Baimuratov, Anvar S., Gun’ko, Yurii K., Baranov, Alexander V., Fedorov, Anatoly V., Rukhlenko, Ivan D.
Format Journal Article
LanguageEnglish
Published Berlin De Gruyter 01.09.2016
Walter de Gruyter GmbH
Subjects
chirality
circular dichroism
Doping
Ion doping
Nanocrystals
Nanoparticles
Nanostructure
Optical activity
Optical transition
Semiconductors
Strength
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Summary:Controlling the strength of enantioselective interaction of chiral inorganic nanoparticles with circularly polarized light is an intrinsically interesting subject of contemporary nanophotonics. This interaction is relatively weak, because the chirality scale of nanoparticles is much smaller than the optical wavelength. Here we theoretically demonstrate that ion doping provides a powerful tool of engineering and enhances optical activity of semiconductor nanocrystals. We show that by carefully positioning ionic impurities inside the nanocrystals, one can maximize the rotatory strengths of intraband optical transitions, and make them 100 times larger than the typical rotatory strengths of small chiral molecules.
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ISSN:2192-8606
2192-8614
DOI:10.1515/nanoph-2016-0034