Electron Microscopy Studies of Electron-Beam Sensitive PbTe-Based Nanostructures

被引：3
|
作者：
Falqui, Andrea [1 ]
Bertoni, Giovanni [1 ]
Genovese, Alessandro [1 ]
Marras, Sergio [1 ]
Malerba, Mario [1 ]
Franchini, Isabella R. [1 ,2 ]
Manna, Liberato [1 ]
机构：
[1] Ist Italiano Tecnol, I-16163 Genoa, Italy
[2] CNR INFM, Natl Nanotechnol Lab, I-73100 Lecce, Italy
来源：
MICROSCOPY RESEARCH AND TECHNIQUE | 2010年 / 73卷 / 10期
关键词：
Cs-corrected high resolution transmission electron microscopy; PbTe; quantum dots; scanning transmission electron microscopy; energy-dispersive x-ray spectrometry; DIFFUSION; OXIDE; SEMICONDUCTORS; REDUCTION; NANOWIRES; GROWTH;
D O I：
10.1002/jemt.20843
中图分类号：
R602 [外科病理学、解剖学]; R32 [人体形态学];
学科分类号：
100101 ;
摘要：
PbTe nanocrystals were synthesized and then reacted with a toluene solution containing AuCl3. Depending on the reaction conditions and on the starting PbTe nanocrystals morphology, different kinds of nanostructures have been obtained: single defect-free PbTe nanocrystals with and without an external amourphous oxide shell, crystalline-Au core/amorphous PbxTeyAu, shell structure, large balloon-shaped (or mushroom-shaped) Au domain attached via its apex to the surface of the nanocrystals. Structure and composition of these different types of nanostructure have been studied by means of C-s-corrected High Resolution Transmission Electron Microscopy (HRTEM) and Scanning Transmission Electron Microscopy (STEM) together with Energy Dispersive X-Ray Spectrometry (EDX), respectively. These nanostructures have been found sensitive to the high-intensity electron beam and its effect has been investigated. Microsc. Res. Tech. 73:944-951, 2010. (C) 2010 Wiley-Liss. Inc.
引用
收藏
页码：944 / 951
页数：8
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