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Title: Facet-selective etching trajectories of individual semiconductor nanocrystals

Journal Article · · Science Advances
ORCiD logo [1];  [2]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [2];  [2]; ORCiD logo [4]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [5]; ORCiD logo [6]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States)
  3. Leibniz Inst. of Surface Engineering (IOM), Leipzig (Germany)
  4. Univ. of California, Berkeley, CA (United States); Leibniz Inst. of Surface Engineering (IOM), Leipzig (Germany)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
  6. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Chicago, IL (United States)

The size and shape of semiconductor nanocrystals govern their optical and electronic properties. Liquid cell transmission electron microscopy (LCTEM) is an emerging tool that can directly visualize nanoscale chemical transformations and therefore inform the precise synthesis of nanostructures with desired functions. However, it remains difficult to controllably investigate the reactions of semiconductor nanocrystals with LCTEM, because of the highly reactive environment formed by radiolysis of liquid. Here, we harness the radiolysis processes and report the single-particle etching trajectories of prototypical semiconductor nanomaterials with well-defined crystalline facets. Lead selenide nanocubes represent an isotropic structure that retains the cubic shape during etching via a layer-by-layer mechanism. The anisotropic arrow-shaped cadmium selenide nanorods have polar facets terminated by either cadmium or selenium atoms, and the transformation trajectory is driven by etching the selenium-terminated facets. LCTEM trajectories reveal how nanoscale shape transformations of semiconductors are governed by the reactivity of specific facets in liquid environments.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1884786
Journal Information:
Science Advances, Vol. 8, Issue 32; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

References (51)

Synthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallites journal September 1993
Atomic Imaging of Phase Transitions and Morphology Transformations in Nanocrystals journal October 2009
Unraveling Kinetically-Driven Mechanisms of Gold Nanocrystal Shape Transformations Using Graphene Liquid Cell Electron Microscopy journal August 2018
Quantum Dots as Cellular Probes journal August 2005
Experimental Determination of the Extinction Coefficient of CdTe, CdSe, and CdS Nanocrystals journal July 2003
Compact high-quality CdSe–CdS core–shell nanocrystals with narrow emission linewidths and suppressed blinking journal February 2013
Amine-Assisted Facetted Etching of CdSe Nanocrystals journal March 2005
Defining the radiation chemistry during liquid cell electron microscopy to enable visualization of nanomaterial growth and degradation dynamics: DEFINING THE RADIATION CHEMISTRY DURING LCEM journal December 2016
Design and synthesis of multigrain nanocrystals via geometric misfit strain journal January 2020
Reversible disorder-order transitions in atomic crystal nucleation journal January 2021
Kinetic pathways of crystallization at the nanoscale journal October 2019
Size- and shape-controlled synthesis of PbSe and PbS nanocrystalsvia a facile method journal January 2010
Resilient Pathways to Atomic Attachment of Quantum Dot Dimers and Artificial Solids from Faceted CdSe Quantum Dot Building Blocks journal June 2019
Drastic Structural Transformation of Cadmium Chalcogenide Nanoparticles Using Chloride Ions and Surfactants journal February 2010
Competition Reactions of H 2 O •+ Radical in Concentrated Cl Aqueous Solutions: Picosecond Pulse Radiolysis Study journal November 2012
Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield journal March 2019
Electron–Water Interactions and Implications for Liquid Cell Electron Microscopy journal September 2014
Reduction Potentials of One‐Electron Couples Involving Free Radicals in Aqueous Solution journal October 1989
Electron–electron and electron‐hole interactions in small semiconductor crystallites: The size dependence of the lowest excited electronic state journal May 1984
Highly efficient and stable InP/ZnSe/ZnS quantum dot light-emitting diodes journal November 2019
Dynamic microscopy of nanoscale cluster growth at the solid–liquid interface journal July 2003
Understanding Reactivity Patterns of Radical Cations journal December 1997
Nanoheterostructure Cation Exchange: Anionic Framework Conservation journal July 2010
Equilibrium shape of Si journal March 1993
Critical Review of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals (⋅OH/⋅O in Aqueous Solution
  • Buxton, George V.; Greenstock, Clive L.; Helman, W. Phillips
  • Journal of Physical and Chemical Reference Data, Vol. 17, Issue 2 https://doi.org/10.1063/1.555805
journal April 1988
Shape-Controlled Synthesis of Colloidal Metal Nanocrystals: Thermodynamic versus Kinetic Products journal June 2015
Some simple, highly reactive, inorganic chlorine derivatives in aqueous solution. Their formation using pulses of radiation and their role in the mechanism of the Fricke dosimeter
  • Jayson, G. G.; Parsons, B. J.; Swallow, A. J.
  • Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, Vol. 69, Issue 0 https://doi.org/10.1039/f19736901597
journal January 1973
Tracking the Effects of Ligands on Oxidative Etching of Gold Nanorods in Graphene Liquid Cell Electron Microscopy journal July 2020
The surface science of nanocrystals journal January 2016
Electronic spectra, photochemistry, and autoxidation mechanism of the sulfite-bisulfite-pyrosulfite systems. SO2-, SO3-, SO4-, and SO5- radicals journal January 1972
The role of organic ligand shell structures in colloidal nanocrystal synthesis journal February 2022
Single-particle mapping of nonequilibrium nanocrystal transformations journal November 2016
Gold Nanocrystal Etching as a Means of Probing the Dynamic Chemical Environment in Graphene Liquid Cell Electron Microscopy journal February 2019
Thermodynamic Oxidation and Reduction Potentials of Photocatalytic Semiconductors in Aqueous Solution journal September 2012
Redox Mediated Control of Electrochemical Potential in Liquid Cell Electron Microscopy journal July 2021
Application of Dislocation Theory to Minimize Defects in Artificial Solids Built with Nanocrystal Building Blocks journal February 2021
Critical Review of Aqueous Solution Reaction Rate Constants for Hydrogen Atoms journal June 2011
Shape control of CdSe nanocrystals journal March 2000
Shape Control of Colloidal Metal Nanocrystals journal March 2008
Shape control and applications of nanocrystals
  • Scher, Erik C.; Manna, Liberato; Alivisatos, A. Paul
  • Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, Vol. 361, Issue 1803 https://doi.org/10.1098/rsta.2002.1126
journal December 2002
Sub–single-exciton lasing using charged quantum dots coupled to a distributed feedback cavity journal August 2019
Reactivity of HO 2 /O 2 Radicals in Aqueous Solution
  • Bielski, Benon H. J.; Cabelli, Diane E.; Arudi, Ravindra L.
  • Journal of Physical and Chemical Reference Data, Vol. 14, Issue 4 https://doi.org/10.1063/1.555739
journal October 1985
Pulse radiolysis study of concentrated sulfuric acid solutions. Formation mechanism, yield and reactivity of sulfate radicals journal January 1992
The surface energy of Si, GaAs, and GaP journal July 1981
In Situ Transmission Electron Microscopy of Cadmium Selenide Nanorod Sublimation journal January 2015
Redox and Acidity Properties of Alkyl- and Arylamine Radical Cations and the Corresponding Aminyl Radicals 1 journal January 1996
Elucidating the Role of Halides and Iron during Radiolysis-Driven Oxidative Etching of Gold Nanocrystals Using Liquid Cell Transmission Electron Microscopy and Pulse Radiolysis journal July 2021
Reaction between hydroperoxo radicals and chlorine in aqueous solution journal September 1981
Semiconductor Clusters, Nanocrystals, and Quantum Dots journal February 1996
Anomalous nanoparticle surface diffusion in LCTEM is revealed by deep learning-assisted analysis journal March 2021
Computer modelling of the radiolysis in an aqueous lithium salt blanket: Suppression of radiolysis by addition of hydrogen journal August 1990