Fabrication and Characterization of Rare-Earth-Doped Nanostructures on Surfaces
详细信息 查看全文
- 作者：Thomas J. Mullen ; Ming Zhang ; Wei Feng ; Rita J. El-khouri ; Ling-Dong Sun ; Chun-Hua Yan ; Timothy E. Patten ; Gang-yu Liu
- 刊名：ACS Nano
- 出版年：2011
- 出版时间：August 23, 2011
- 年：2011
- 卷：5
- 期：8
- 页码：6539-6545
- 全文大小：3088K
- 年卷期：0
- ISSN：1936-086X
文摘
This article presents a simple and practical means to produce rare-earth-based nanostructures, as well as a combined characterization of structure and optical properties in situ. A nanosphere lithography strategy combined with surface chemistry enables the production of arrays of β-NaYF4:Yb,Er nanorings inlaid in an octadecyltrichlorosilane matrix. These arrays of nanorings are produced over the entire support, such as a 1 cm2 glass coverslip. The dimension of nanorings can be varied by changing the deposition conditions. A home-constructed, multifunctional microscope integrating atomic force microscopy, near-field scanning optical microscopy, and far-field optical microscopy and spectroscopy is utilized to characterize the nanostructures. This in situ and combined characterization is important for rare-earth-containing nanomaterials in order to correlate local structure with upconversion photoluminescence. Knowledge gained from the investigation should facilitate materials design and optimization, for instance, in the context of photovoltaic devices and biofluorescent probes.