Deterministic shape-selective synthesis of nanowires nanoribbons and nanosaws by steady-state vapour-transport

被引：21
作者：
Colli, A [1 ]
Fasoli, A
Hofmann, S
Ducati, C
Robertson, J
Ferrari, AC
机构：
[1] Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England
[2] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
来源：
NANOTECHNOLOGY | 2006年 / 17卷 / 04期
关键词：
D O I：
10.1088/0957-4484/17/4/034
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We demonstrate the deterministic shape-selective synthesis and growth of CdSe nanowires, nanosaws and nanoribbons by a simple vapour-transport process in a tube furnace. The key step, in order to achieve reproducible shape selectivity for a given set of deposition parameters, is to exclude any effects of the temperature ramping. We prove that an efficient precursor-flow shutter is achieved just by varying the total furnace pressure. We then present a shape-diagram linking the different nanocrystals morphologies to only two parameters: powder and substrate temperature. These are varied in the 550-700 degrees C and 400-600 degrees C range, respectively. A model explaining the shape control is discussed.
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收藏
页码：1046 / 1051
页数：6
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