Title: Temperature dependent exciton radiative lifetime in ZnO nanorods

Authors: X.H. Zhang, S.J. Chua, A.M. Yong, H.Y. Yang, S.P. Lau, S.F. Yu, X.W. Sun

Addresses: Institute of Materials Research and Engineering, 3 Research Link, 117602 Singapore. ' Institute of Materials Research and Engineering, 3 Research Link, 117602 Singapore. ' Institute of Materials Research and Engineering, 3 Research Link, 117602 Singapore. ' School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798 Singapore. ' School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798 Singapore. ' School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798 Singapore. ' School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798 Singapore

Abstract: In this paper, we report the fabrication of ZnO nanorods using vapour phase transportation. The morphology of ZnO nanorods is characterised using scanning electron microscope. The optical properties of the nanorods are studied using time-integrated photoluminescence and time-resolved photoluminescence. It is found that the exciton radiative lifetime increases with temperature. The mechanism for the increase of exciton radiative lifetime with temperature is discussed.

Keywords: exciton radiative lifetime; ZnO nanorods; temperature dependence; nanotechnology; zinc oxide.

DOI: 10.1504/IJNT.2007.013974

International Journal of Nanotechnology, 2007 Vol.4 No.4, pp.404 - 411

Published online: 05 Jun 2007 *

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