The effect of V/III ratio and catalyst particle size on the crystal structure and optical properties of InP nanowires
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Paiman, Suriati
Gao, Qiang
Jagadish, Chennupati
Pemasiri, Kuranananda
Montazeri, Mohammad
Jackson, Howard E
Smith, Leigh M
Yarrison-Rice, Jan M
Zhang, Xin
Zou, Jin
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Institute of Physics Publishing
Abstract
InP nanowires were grown on (111)B 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 ∼2500ps with notably higher quantum efficiencies.
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Nanotechnology
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2037-12-31
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