Large-area zinc oxide nanorod arrays templated by nanoimprint lithography: control of morphologies and optical properties
Name
Ross_Large-area.pdf
Size
2.82 MB
Format
Adobe PDF
Checksum (MD5)
82a3054727a68139f453334d3534e9ae
Author(s)
Zhang, Chen
Huang, Xiaohu
Liu, Hongfei
Chua, Soo Jin
Ross, Caroline A
Date Issued
November 2016
Journal
Nanotechnology
Publisher
IOP Publishing
Citation
Zhang, Chen et al. “Large-Area Zinc Oxide Nanorod Arrays Templated by Nanoimprint Lithography: Control of Morphologies and Optical Properties.” Nanotechnology 27, 48 (November 2016): 485604. © 2016 IOP Publishing Ltd
Version
Final published version
Abstract
Vertically aligned, highly ordered, large area arrays of nanostructures are important building blocks for multifunctional devices. Here, ZnO nanorod arrays are selectively synthesized on Si substrates by a solution method within patterns created by nanoimprint lithography. The growth modes of two dimensional nucleation-driven wedding cakes and screw dislocation-driven spirals are inferred to determine the top end morphologies of the nanorods. Sub-bandgap photoluminescence of the nanorods is greatly enhanced by the manipulation of the hydrogen donors via a post-growth thermal treatment. Lasing behavior is facilitated in the nanorods with faceted top ends formed from wedding cakes growth mode. This work demonstrates the control of morphologies of oxide nanostructures in a large scale and the optimization of the optical performance.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution 3.0 Unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/0957-4484/27/48/485604
