Highly polarized light emission by isotropic quantum dots integrated with magnetically aligned segmented nanowires

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Uran C., ERDEM T., Guzelturk B., Perkgoz N. K., Jun S., Jang E., ...More

APPLIED PHYSICS LETTERS, vol.105, no.14, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 105 Issue: 14
  • Publication Date: 2014
  • Doi Number: 10.1063/1.4897971
  • Journal Name: APPLIED PHYSICS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Abdullah Gül University Affiliated: Yes

Abstract

In this work, we demonstrate a proof-of-concept system for generating highly polarized light from colloidal quantum dots (QDs) coupled with magnetically aligned segmented Au/Ni/Au nanowires (NWs). Optical characterizations reveal that the optimized QD-NW coupled structures emit highly polarized light with an s-to p-polarization (s/p) contrast as high as 15: 1 corresponding to a degree of polarization of 0.88. These experimental results are supported by the finite-difference time-domain simulations, which demonstrate the interplay between the inter-NW distance and the degree of polarization. (C) 2014 AIP Publishing LLC.