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As a new class of two-dimensional materials, two-dimensional (2D) heterostructures constructed from metal chalcogenides (MCs) have been gaining tremendous attention due to their unprecedented physical and chemical phenomena, mainly originated from their distinct structural features such as composition, architecture type, spatial arrangement of each component, crystal structure, exposed facet and interface, dimensionality in their heterostructures. Towards the realization of practical applications, synthetic approaches need a rational design with a variety of architecture types including laterally-combined, vertically-aligned, and conformally-coated 2D MC heterostructures. Among various synthetic routes, solution-based synthesis is thought of as an alternative to fabrication through high-cost setups since it can control those structural features in a cheap fashion. This review presents recent progress on solution-based synthesis to produce various 2D MC heterostructures with a focus on the synthetic fundamentals in terms of thermodynamic and kinetic aspects related to the growth mechanism. Four different synthetic approaches are reviewed: seeded growth, cation exchange reaction, colloidal atomic layer deposition, direct synthesis including one-step process and modified electrochemical method. We also provide some representative applications of 2D MC heterostructures and their hybrid composites in various fields including optoelectronics, thermoelectrics, catalysis, and battery. Finally, we offer an insight into challenges and future directions in a synthetic improvement of 2D MC heterostructures.


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Heterostructures in two-dimensional colloidal metal chalcogenides: Synthetic fundamentals and applications

Show Author's information Yuho Min1,§Eunmi Im3,§Geon-Tae Hwang1Jong-Woo Kim1Cheol-Woo Ahn1Jong-Jin Choi1Byung-Dong Hahn1Joon-Hwan Choi1Woon-Ha Yoon1Dong-Soo Park1Dong Choon Hyun2Geon Dae Moon3( )
Functional Ceramics Department, Powder & Ceramics Division,Korea Institute of Materials Science (KIMS),Changwon, Gyeongnam,51508,Republic of Korea;
,Kyungpook National University,Daegu,41566,Republic of Korea;
Dongnam Regional Division,Korea Institute of Industrial Technology,Busan,46938,Republic of Korea;

§ Yuho Min and Eunmi Im contributed equally to this work.

Abstract

As a new class of two-dimensional materials, two-dimensional (2D) heterostructures constructed from metal chalcogenides (MCs) have been gaining tremendous attention due to their unprecedented physical and chemical phenomena, mainly originated from their distinct structural features such as composition, architecture type, spatial arrangement of each component, crystal structure, exposed facet and interface, dimensionality in their heterostructures. Towards the realization of practical applications, synthetic approaches need a rational design with a variety of architecture types including laterally-combined, vertically-aligned, and conformally-coated 2D MC heterostructures. Among various synthetic routes, solution-based synthesis is thought of as an alternative to fabrication through high-cost setups since it can control those structural features in a cheap fashion. This review presents recent progress on solution-based synthesis to produce various 2D MC heterostructures with a focus on the synthetic fundamentals in terms of thermodynamic and kinetic aspects related to the growth mechanism. Four different synthetic approaches are reviewed: seeded growth, cation exchange reaction, colloidal atomic layer deposition, direct synthesis including one-step process and modified electrochemical method. We also provide some representative applications of 2D MC heterostructures and their hybrid composites in various fields including optoelectronics, thermoelectrics, catalysis, and battery. Finally, we offer an insight into challenges and future directions in a synthetic improvement of 2D MC heterostructures.

Keywords: two-dimensional (2D) nanomaterials, heterostructure, metal chalcogenide, anisotropic nanomaterials, solution-based synthesis

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Publication history
Copyright
Acknowledgements

Publication history

Received: 26 March 2019
Revised: 06 May 2019
Accepted: 08 May 2019
Published: 21 May 2019
Issue date: August 2019

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Acknowledgements

Acknowledgements

This work was supported by Korea Institute of Materials Science (KIMS) internal R & D program (No. PNK6030) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 2017R1D1A1B03027904).

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