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

Journal Article · Mon Oct 06 04:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4897971· OSTI ID:22351125

Uran, Can; Erdem, Talha; Guzelturk, Burak ^[1]; Perkgöz, Nihan Kosku ^[1]; Jun, Shinae; Jang, Eunjoo ^[2]

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1. Department of Electrical and Electronics Engineering, Department of Physics, and UNAM - National Nanotechnology Research Center, Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800 (Turkey)
2. Inorganic Material Laboratory, Material Research Center, Samsung Advanced Institute of Technology, Samsung Electronics Co., 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-803 (Korea, Republic of)

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.

• OSTI ID: 22351125
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 14 Vol. 105; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
DISTANCE
EMISSION
GOLD
NANOWIRES
NICKEL
OPTICAL PROPERTIES
POLARIZATION
QUANTUM DOTS
QUANTUM WIRES
SIMULATION
VISIBLE RADIATION