Real-time observation of morphological transformations in II-VI semiconducting nanobelts via environmental transmission electron microscopy

Agarwal, Rahul; Zakharov, Dmitri N.; Krook, Nadia M.; Liu, Wenjing; Berger, Jacob; Stach, Eric A.; Agarwal, Ritesh

doi:10.1021/acs.nanolett.5b00520

Title: Real-time observation of morphological transformations in II-VI semiconducting nanobelts via environmental transmission electron microscopy

Journal Article · Fri May 01 00:00:00 EDT 2015 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.5b00520· OSTI ID:1213373

Agarwal, Rahul ^[1]; Zakharov, Dmitri N. ^[2]; Krook, Nadia M. ^[1]; Liu, Wenjing ^[1]; Berger, Jacob ^[1]; Stach, Eric A. ^[2]; Agarwal, Ritesh ^[1]

Univ. of Pennsylvania, Philadelphia, PA (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)

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.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704

OSTI ID:: 1213373

Report Number(s):: BNL-108250-2015-JA; R&D Project: 16060; KC0403020

Journal Information:: Nano Letters, Vol. 15, Issue 5; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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