Article
Improved Photoluminescence of Vertically Aligned ZnO Nanorods Grown on BaSrTiO3 by Pulsed Laser Deposition
Nanotechnology
Document Type
Article
Publication Date
9-1-2009
Disciplines
Abstract
ZnO nanorods were grown on a variety of substrates such as Si, SiO2/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 BaSrTiO3 (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.
DOI
10.1088/0957-4484/20/38/385706
Citation Information
C. V. Varanasi, Kevin D. Leedy, David H. Tomich, Guru Subramanyam, et al.. "Improved Photoluminescence of Vertically Aligned ZnO Nanorods Grown on BaSrTiO3 by Pulsed Laser Deposition" Nanotechnology Vol. 20 Iss. 38 (2009) ISSN: 0957-4484 Available at: http://works.bepress.com/guru_subramanyam/3/