Linearly polarized photoluminescence of InGaN quantum disks embedded in GaN nanorods.

Abstract:

:We have investigated the emission from InGaN/GaN quantum disks grown on the tip of GaN nanorods. The emission at 3.21 eV from the InGaN quantum disk doesn't show a Stark shift, and it is linearly polarized when excited perpendicular to the growth direction. The degree of linear polarization is about 39.3% due to the anisotropy of the nanostructures. In order to characterize a single nanostructure, the quantum disks were dispersed on a SiO2 substrate patterned with a metal reference grid. By rotating the excitation polarization angle from parallel to perpendicular relative to the nanorods, the variation of overall PL for the 3.21 eV peak was recorded and it clearly showed the degree of linear polarization (DLP) of 51.5%.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Park Y,Chan CCS,Nuttall L,Puchtler TJ,Taylor RA,Kim N,Jo Y,Im H

doi

10.1038/s41598-018-26642-8

subject

Has Abstract

pub_date

2018-05-25 00:00:00

pages

8124

issue

1

issn

2045-2322

pii

10.1038/s41598-018-26642-8

journal_volume

8

pub_type

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