The effect of V/III ratio and catalyst particle size on the crystal structure and optical properties of InP nanowires

S Paiman; Q Gao; H H Tan; C Jagadish; K Pemasiri; M Montazeri; H E Jackson; L M Smith; J M Yarrison-Rice; X Zhang; J Zou

doi:10.1088/0957-4484/20/22/225606

The effect of V/III ratio and catalyst particle size on the crystal structure and optical properties of InP nanowires

Nanotechnology. 2009 Jun 3;20(22):225606. doi: 10.1088/0957-4484/20/22/225606. Epub 2009 May 13.

Authors

S Paiman¹, Q Gao, H H Tan, C Jagadish, K Pemasiri, M Montazeri, H E Jackson, L M Smith, J M Yarrison-Rice, X Zhang, J Zou

Affiliation

¹ Department of Electronic Materials Engineering, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia. sbp109@rsphysse.anu.edu.au

PMID: 19436086
DOI: 10.1088/0957-4484/20/22/225606

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.