Engineering Optical Activity of Semiconductor Nanocrystals via Ion Doping

Nikita V. Tepliakov, Anvar S. Baimuratov, Yurii K. Gun'ko, Alexander V. Baranov, Anatoly V. Fedorov, Ivan D. Rukhlenko
2016 Nanophotonics  
AbstractControlling 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
more » ... 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.
doi:10.1515/nanoph-2016-0034 fatcat:746szzzukje2vealwwgx4vhq5u