The effect of V/III ratio and catalyst particle size on the crystal structure and optical properties of InP nanowires.
InP nanowires were grown on 111B InP substrates by metal-organic chemical vapour deposition in the presence of colloidal gold particles as catalysts. Transmission electron microscopy and photoluminescence measurements were carried out to investigate the effects of V/III ratio and nanowire diameter on structural and optical properties. Results show that InP nanowires grow preferably in the wurtzite crystal structure than the zinc blende crystal structure with increasing V/III ratio or decreasing diameter. Additionally, time-resolved photoluminescence (TRPL) studies have revealed that wurtzite nanowires show longer recombination lifetimes of approximately 2500 ps with notably higher quantum efficiencies.
Paiman
S
S
Department of Electronic Materials Engineering, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia. sbp109@rsphysse.anu.edu.au
Gao
Q
Q
Tan
H H
HH
Jagadish
C
C
Pemasiri
K
K
Montazeri
M
M
Jackson
H E
HE
Smith
L M
LM
Yarrison-Rice
J M
JM
Zhang
X
X
Zou
J
J