Solar Synthesis of PbS–SnS₂ Superstructure Nanoparticles

Olga Brontvein; Ana Albu-Yaron; Moshe Levy; Daniel Feuerman; Ronit Popovitz-Biro; Reshef Tenne; Andrey Enyashin; Jeffrey M. Gordon

doi:10.1021/acsnano.5b02412

journal article·2015-08-25

Solar Synthesis of PbS–SnS₂ Superstructure Nanoparticles

Olga Brontvein, Ana Albu-Yaron, Moshe Levy, Daniel Feuerman, Ronit Popovitz-Biro, Reshef Tenne, Andrey Enyashin, Jeffrey M. Gordon

ACS Nano· Volume 9· Issue 8

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Source abstract

Abstract

We report the synthesis and supporting density-functional-theory computations for a closed-cage, misfit layered-compound superstructure from PbS-SnS2, generated by highly concentrated sunlight from a precursor mixture of Pb, SnS2, and graphite. The unique reactor conditions created in our solar furnace are found to be particularly conducive to the formation of these nanomaterials. Detailed structural and chemical characterization revealed a spontaneous inside-out formation mechanism, with a broad range of nonhollow fullerene-like structures starting at a diameter of ∼20 nm and a wall thickness of ∼5 layers. The computations also reveal a counterintuitive charge transfer pathway from the SnS2 layers to the PbS layers, which indicates that, in contrast to binary-layered compounds where it is principally van der Waals forces that hold the layers together, polar forces appear to be as important in stabilizing superstructures of misfit layered compounds.

Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties · TiO2 Photocatalysis and Solar Cells

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials and Interfaces, Weizmann Institute of Science, P.O. Box 26, Rehovot 76100, Israel

Department of Solar Energy and Environmental Physics, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Sede Boqer 84990, Israel

Electron Microscopy Unit, Weizmann Institute of Science, P.O. Box 26, Rehovot 76100, Israel

Institute of Mathematics and Computer Sciences, Ural Federal University, Lenina Pr. 51, Ekaterinburg 620000, Russia

Funding

Irving and Azelle Waltcher Foundation · Israel National Nanotechnology Initiative · Irving and Cherna Moskowitz Center for Nano and Bio-nano Imaging, Weizmann Institute of Science · Perlman Foundation · Government of the Russian Federation · Israel Science Foundation

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