A library of atomically thin metal chalcogenides

Journal: Nature

Published: 2018-04-18

DOI: 10.1038/s41586-018-0008-3

Affiliations: 15

Authors: 25

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Research Highlight

Just add a pinch of salt

© ROBERT BROOK/SCIENCE PHOTO LIBRARY/ Getty

© ROBERT BROOK/SCIENCE PHOTO LIBRARY/ Getty

Adding a dash of salt to transition metals and chalcogens produces a broader range of two-dimensional (2D) materials, which could lead to better electronic and optoelectronic devices.

Although numerous compounds are possible, only a handful of so-called transition-metal chalcogenides (TMCs) have been created owing to the high melting points of their metal and metal oxide precursors.

An international team of scientists, including researchers from Nanyang Technological University in Singapore, has found that adding common table salt during chemical vapor deposition — a commonly used technique to make TMCs — lowered the temperatures at which the metal oxides melted.

The addition of salt made it easier for the metal oxides to react with the chalcogens to form oxychlorides, intermediate compounds used to create 2D TMCs. This may lead to a broader range of 2D TMCs whose properties could be customized for use in photovoltaic and sensor devices.

Supported content

  1. Nature 556, 355–360 (2018). doi: 10.1038/s41586-018-0008-3
Institutions FC
Centre for Programmable Materials, NTU, Singapore 0.21
Division of Physics and Applied Physics (PAP), NTU, Singapore 0.16
Beijing National Laboratory for Condensed Matter Physics, IOP CAS, China 0.12
National Institute of Advanced Industrial Science and Technology (AIST), Japan 0.08
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, SICCAS, China 0.08
Department of Materials Science and NanoEngineering (MSNE), Rice University, United States of America (USA) 0.06
Department of Chemistry, Rice University, United States of America (USA) 0.06
NUS Centre for Advanced 2D Materials (CA2DM) and Graphene Research Centre (GRC), Singapore 0.05
NUS Department of Physics, Singapore 0.05
School of Materials Science and Engineering, ECUST, China 0.04
Collaborative Innovation Center of Quantum Matter (CICQM), China 0.04
Institute of Physics, Academia Sinica, Taiwan 0.01
Nanoelectronics Centre of Excellence (NOVITAS), NTU, Singapore 0.01
CNRS International NTU THALES Research Alliance (CINTRA), Singapore 0.01
Environmental Chemistry and Materials Centre (ECMC), NTU, Singapore 0.01

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