Improved photoluminescence of vertically aligned ZnO nanorods grown on BaSrTiO3 by pulsed laser deposition

ZnO nanorods were grown on a variety of substrates such as Si, SiO(2)/Si and sapphire in a large-area pulsed laser deposition chamber designed for sensor device fabrication. Processing conditions were optimized to grow ZnO nanorods with or without seed layers. Au, Cr and BaSrTiO(3) (BST) seed layers...

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Bibliographic Details
Published in:Nanotechnology 2009-09, Vol.20 (38), p.385706-385706
Main Authors: Varanasi, C V, Leedy, K D, Tomich, D H, Subramanyam, G, Look, D C
Format: Article
Language:English
Online Access:Get full text
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Summary:ZnO nanorods were grown on a variety of substrates such as Si, SiO(2)/Si and sapphire in a large-area pulsed laser deposition chamber designed for sensor device fabrication. Processing conditions were optimized to grow ZnO nanorods with or without seed layers. Au, Cr and BaSrTiO(3) (BST) seed layers were investigated to compare their effects on the diameter and orientation of ZnO nanorods. ZnO nanorods were observed to align better when grown on sapphire, Cr or BST seed layers as compared to Au or Si layers. The highest quality nanorods were those grown on BST seed layers, as shown by 4 K photoluminescence donor-bound-exciton linewidths of only 0.5 meV.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/20/38/385706