Real-time observation of morphological transformations in II-VI semiconducting nanobelts via environmental transmission electron microscopy
Abstract
It has been observed that wurtzite II–VI semiconducting nanobelts transform into single-crystal, periodically branched nanostructures upon heating. The mechanism of this novel transformation has been elucidated by heating II–VI nanobelts in an environmental transmission electron microscope (ETEM) in oxidizing, reducing and inert atmospheres while observing their structural changes with high spatial resolution. The interplay of surface reconstruction of high-energy surfaces of the wurtzite phase and environment-dependent anisotropic chemical etching of certain crystal surfaces in the branching mechanism of nanobelts has been observed. Understanding of structural and chemical transformations of materials via in situ microscopy techniques and their role in designing new nanostructured materials is discussed.
- Authors:
-
- Univ. of Pennsylvania, Philadelphia, PA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1213373
- Report Number(s):
- BNL-108250-2015-JA
Journal ID: ISSN 1530-6984; R&D Project: 16060; KC0403020
- Grant/Contract Number:
- SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nano Letters
- Additional Journal Information:
- Journal Volume: 15; Journal Issue: 5; Journal ID: ISSN 1530-6984
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; nanotechnology; in-situ TEM; ETEM; heterostructure; nanobelt
Citation Formats
Agarwal, Rahul, Zakharov, Dmitri N., Krook, Nadia M., Liu, Wenjing, Berger, Jacob, Stach, Eric A., and Agarwal, Ritesh. Real-time observation of morphological transformations in II-VI semiconducting nanobelts via environmental transmission electron microscopy. United States: N. p., 2015.
Web. doi:10.1021/acs.nanolett.5b00520.
Agarwal, Rahul, Zakharov, Dmitri N., Krook, Nadia M., Liu, Wenjing, Berger, Jacob, Stach, Eric A., & Agarwal, Ritesh. Real-time observation of morphological transformations in II-VI semiconducting nanobelts via environmental transmission electron microscopy. United States. https://doi.org/10.1021/acs.nanolett.5b00520
Agarwal, Rahul, Zakharov, Dmitri N., Krook, Nadia M., Liu, Wenjing, Berger, Jacob, Stach, Eric A., and Agarwal, Ritesh. Fri .
"Real-time observation of morphological transformations in II-VI semiconducting nanobelts via environmental transmission electron microscopy". United States. https://doi.org/10.1021/acs.nanolett.5b00520. https://www.osti.gov/servlets/purl/1213373.
@article{osti_1213373,
title = {Real-time observation of morphological transformations in II-VI semiconducting nanobelts via environmental transmission electron microscopy},
author = {Agarwal, Rahul and Zakharov, Dmitri N. and Krook, Nadia M. and Liu, Wenjing and Berger, Jacob and Stach, Eric A. and Agarwal, Ritesh},
abstractNote = {It has been observed that wurtzite II–VI semiconducting nanobelts transform into single-crystal, periodically branched nanostructures upon heating. The mechanism of this novel transformation has been elucidated by heating II–VI nanobelts in an environmental transmission electron microscope (ETEM) in oxidizing, reducing and inert atmospheres while observing their structural changes with high spatial resolution. The interplay of surface reconstruction of high-energy surfaces of the wurtzite phase and environment-dependent anisotropic chemical etching of certain crystal surfaces in the branching mechanism of nanobelts has been observed. Understanding of structural and chemical transformations of materials via in situ microscopy techniques and their role in designing new nanostructured materials is discussed.},
doi = {10.1021/acs.nanolett.5b00520},
journal = {Nano Letters},
number = 5,
volume = 15,
place = {United States},
year = {Fri May 01 00:00:00 EDT 2015},
month = {Fri May 01 00:00:00 EDT 2015}
}
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