Preparation and Photoluminescence of (3C-ZnS)/(2H-ZnS) Superlattice in Mn-doped ZnS Nanoribbons

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• 作者：Junfeng Lu ; Xianghua Zeng ; Hongfei Liu ; Wei Zhang ; Yong Zhang
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：November 1, 2012
• 年：2012
• 卷：116
• 期：43
• 页码：23013-23018
• 全文大小：415K
• 年卷期：v.116,no.43(November 1, 2012)
• ISSN：1932-7455

文摘

In this paper, we report the first successful growth of (3C-ZnS)n/(2H-ZnS)m superlattice structures in Mn-doped ZnS nanoribbons prepared on Au-coated Si substrates by a chemical vapor transport method. The lattice-resolved HRTEM image presents the self-assembled (3C-ZnS)(111)/(2H-ZnS)(100) superlattices, where both the (3C-ZnS) ZnS atom layer and the (2H-ZnS) atom layer are alternately arrayed in the plane of nanoribbons along the axis growth direction. The individual Mn-doped ZnS nanoribbons, with uniform widths ranging from 100 to 800 nm and lengths ranging from tens to one hundred micrometers, are composed of the hexagonal wurtzite atom layers growing along the [100] axis direction and [001] vertical direction and the zinc-blende atom layers growing along the 111 direction. An identical strong photoluminescence transition peak at 580 nm was observed for all ZnS:Mn samples, and the peak intensity reaches a maximum with a Mn content of 0.68 atom % from the EDX analysis in 2 atom % Mn-doped ZnS samples.