TY - JOUR
T1 - Photoluminescence of single GaN/InGaN nanorod light emitting diode fabricated on a wafer scale
AU - Chan, Christopher C. S.
AU - Zhuang, Yiding
AU - Reid, Benjamin P. L.
AU - Jia, Wei
AU - Holmes, Mark J.
AU - Alexander-webber, Jack A.
AU - Nakazawa, Shingo
AU - Shields, Philip A.
AU - Allsopp, Duncan W. E.
AU - Taylor, Robert A.
PY - 2013/8
Y1 - 2013/8
N2 - Nanorod arrays were fabricated on a blue InGaN/GaN single quantum well (QW) LED wafer using nanoimprint lithography. A regular hexagonal lattice of nanorods was made at a pitch of 2 µm producing single quantum disks in the nanorods with diameter of ∼400 nm. Time integrated micro-photoluminescence was performed to investigate the emission properties of top down processed single nanorods at 4.2 K. Micro-photoluminescence maps were made to study the spatial isolation of the photoluminescence emission, showing a good contrast ratio between nanorods. Excitation power dependent studies show screening of the quantum confined Stark effect for both the unprocessed wafer and the single nanorod. At low excitation powers, localised states appearing as sharp peaks in the photoluminescence spectrum were visible with a density of approximately four peaks per nanorod.
AB - Nanorod arrays were fabricated on a blue InGaN/GaN single quantum well (QW) LED wafer using nanoimprint lithography. A regular hexagonal lattice of nanorods was made at a pitch of 2 µm producing single quantum disks in the nanorods with diameter of ∼400 nm. Time integrated micro-photoluminescence was performed to investigate the emission properties of top down processed single nanorods at 4.2 K. Micro-photoluminescence maps were made to study the spatial isolation of the photoluminescence emission, showing a good contrast ratio between nanorods. Excitation power dependent studies show screening of the quantum confined Stark effect for both the unprocessed wafer and the single nanorod. At low excitation powers, localised states appearing as sharp peaks in the photoluminescence spectrum were visible with a density of approximately four peaks per nanorod.
UR - http://www.scopus.com/inward/record.url?scp=84883198673&partnerID=8YFLogxK
UR - http://dx.doi.org/10.7567/JJAP.52.08JE20
U2 - 10.7567/JJAP.52.08JE20
DO - 10.7567/JJAP.52.08JE20
M3 - Article
SN - 0021-4922
VL - 52
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - No 8, Part 2
M1 - 08JE20
ER -