Electron microscopy studies of electron-beam sensitive PbTe-based nanostructures

Andrea Falqui; Giovanni Bertoni; Alessandro Genovese; Sergio Marras; Mario Malerba; Isabella R. Franchini; Liberato Manna

doi:10.1002/jemt.20843

Electron microscopy studies of electron-beam sensitive PbTe-based nanostructures

Andrea Falqui^*, Giovanni Bertoni, Alessandro Genovese, Sergio Marras, Mario Malerba, Isabella R. Franchini, Liberato Manna

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

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 Pb_xTe_yAu_z 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.

Original language	English (US)
Pages (from-to)	944-951
Number of pages	8
Journal	Microscopy Research and Technique
Volume	73
Issue number	10
DOIs	https://doi.org/10.1002/jemt.20843
State	Published - Oct 2010
Externally published	Yes

Keywords

Cs-corrected high resolution transmission electron microscopy
Energy-dispersive x-ray spectrometry
PbTe
Quantum dots
Scanning transmission electron microscopy

ASJC Scopus subject areas

Instrumentation
Medical Laboratory Technology
Anatomy
Histology

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title = "Electron microscopy studies of electron-beam sensitive PbTe-based nanostructures",

abstract = "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 PbxTeyAuz 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 Cs-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.",

keywords = "Cs-corrected high resolution transmission electron microscopy, Energy-dispersive x-ray spectrometry, PbTe, Quantum dots, Scanning transmission electron microscopy",

author = "Andrea Falqui and Giovanni Bertoni and Alessandro Genovese and Sergio Marras and Mario Malerba and Franchini, {Isabella R.} and Liberato Manna",

year = "2010",

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doi = "10.1002/jemt.20843",

language = "English (US)",

volume = "73",

pages = "944--951",

journal = "Microscopy Research and Technique",

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T1 - Electron microscopy studies of electron-beam sensitive PbTe-based nanostructures

AU - Falqui, Andrea

AU - Bertoni, Giovanni

AU - Genovese, Alessandro

AU - Marras, Sergio

AU - Malerba, Mario

AU - Franchini, Isabella R.

AU - Manna, Liberato

PY - 2010/10

Y1 - 2010/10

N2 - 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 PbxTeyAuz 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 Cs-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.

AB - 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 PbxTeyAuz 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 Cs-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.

KW - Cs-corrected high resolution transmission electron microscopy

KW - Energy-dispersive x-ray spectrometry

KW - PbTe

KW - Quantum dots

KW - Scanning transmission electron microscopy

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U2 - 10.1002/jemt.20843

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JO - Microscopy Research and Technique

JF - Microscopy Research and Technique

IS - 10

ER -

Electron microscopy studies of electron-beam sensitive PbTe-based nanostructures

Abstract

Keywords

ASJC Scopus subject areas

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