Facet-selective etching trajectories of individual semiconductor nanocrystals-Reference-Cited by-同舟云学术

Facet-selective etching trajectories of individual semiconductor nanocrystals

Published:2022-08-12 Issue:32 Volume:8 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Yan Chang¹²^ORCID,Byrne Dana¹,Ondry Justin C.¹³^ORCID,Kahnt Axel⁴^ORCID,Moreno-Hernandez Ivan A.¹^ORCID,Kamat Gaurav A.⁵^ORCID,Liu Zi-Jie¹,Laube Christian¹⁴^ORCID,Crook Michelle F.¹^ORCID,Zhang Ye¹^ORCID,Ercius Peter⁶^ORCID,Alivisatos A. Paul¹²³⁷^ORCID

Affiliation:

1. Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.

2. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

3. Kavli Energy NanoScience Institute, University of California, Berkeley, Berkeley, CA 94720, USA.

4. Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, D-04318 Leipzig, Germany.

5. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA.

6. National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

7. Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA 94720, USA.

Abstract

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference59 articles.

1. Semiconductor Clusters, Nanocrystals, and Quantum Dots

2. Synthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallites

3. Electron–electron and electron‐hole interactions in small semiconductor crystallites: The size dependence of the lowest excited electronic state

4. Quantum Dots as Cellular Probes

5. Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield

Cited by 18 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. Filming nanodroplet running and jetting mediated by nanoscale solid-gas and solid-liquid interface;2024-08-09

2. Deciphering Acid Etching-Induced Anisotropic Shape Transformation of ZnO Nanorods via In Situ Liquid Cell TEM;Microscopy and Microanalysis;2024-07

3. Atomistic Insights on Facet-Dependent Functional Properties in CdSe Nanocrystals;Chemistry of Materials;2024-05-07

4. Facet-engineered growth of non-layered 2D manganese chalcogenides;Advanced Powder Materials;2024-04

5. Abnormal Silicon Etching Behaviors in Nanometer-Sized Channels;Nano Letters;2024-04-01