期刊
MATERIALS & DESIGN
卷 119, 期 -, 页码 464-469出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2017.01.089
关键词
ZnO; Hydrothermal growth; Pattern; Low aspect ratio nanorods
资金
- Fonds de Recherche Quebec Nature et Technologies(FRQNT) [2015-NC-179996]
- National Science and Engineering Research Council (NSERC) [RGPIN 435875-2013]
- Canadian Microsystems Corporation (CMC) [2457]
- Concordia University
We have grown patterned, low-aspect-ratio, well-separated single ZnO nanorods using a hydrothermal method on two different substrates with dissimilar crystal orientations. ZnO nuclei have been used as a seed layer to compensate the crystal mismatch between the substrates and nanorods. Based on XRD results, in order to have highly oriented nanorods, the seed layer must be annealed over 300 degrees C. Micro-Raman spectra show that our patterned nanorods have a wurtzite crystal structure, with most nanorods presenting vertical orientation relative to the substrate. Room-temperature micro-photoluminescence (PL) spectra from the nanorods show sharp band edge emission at 385 nm and a common broadband defect emission in the visible range. Our method is a significant step towards an economical controlled synthesis of 1D ZnO for application in mass-production advanced devices. (C) 2017 Elsevier Ltd. All rights reserved.
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