Up- and down-conversion cubic zirconia and hafnia nanobelts
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 4826-4829 |
Journal / Publication | Advanced Materials |
Volume | 20 |
Issue number | 24 |
Publication status | Published - 17 Dec 2008 |
Externally published | Yes |
Link(s)
Abstract
A direct and scalable approach, based upon a thermal decomposition method under normal atmospheric pressure was introduced, for growing well-defined single-crystalline cubic ZrO2 and HfO2 nanobelts with controllable structural compositions and novel optical properties. A solution of ZrCl4 and YCl3.6H2O in ethanol was first treated with sodium hydroxide to yield a viscous gel mixture. The mixture was transferred into a 15 mL Teflon-lined autoclave and heated at 140°C for 24h. The as-synthesized ZrO2 precursors are composed of Zr(OH) 4 as characterized by Fourier transform IR and thermal analysis. XRD patterns of the YSZ samples obtained with less Y3+ content show a mixture of monoclinic, tetragonal, and cubic phases. The down-conversion emission spectrum that is independent of dopant ions show a peak centered at 470nm, corresponding to band gap emission of the host.
Citation Format(s)
Up- and down-conversion cubic zirconia and hafnia nanobelts. / Jiang, Changlong; Wang, Feng; Wu, Nianqiang et al.
In: Advanced Materials, Vol. 20, No. 24, 17.12.2008, p. 4826-4829.
In: Advanced Materials, Vol. 20, No. 24, 17.12.2008, p. 4826-4829.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review