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Morant-Giner M, Brotons-Alcázar I, Shmelev NY, Gushchin AL, Norman LT, Khlobystov AN, Alberola A, Tatay S, Canet-Ferrer J, Forment-Aliaga A, Coronado E. WS 2 /MoS 2 Heterostructures through Thermal Treatment of MoS 2 Layers Electrostatically Functionalized with W 3 S 4 Molecular Clusters. Chemistry 2020; 26:6670-6678. [PMID: 32045041 DOI: 10.1002/chem.202000248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Indexed: 11/10/2022]
Abstract
The preparation of 2D stacked layers combining flakes of different nature gives rise to countless numbers of heterostructures where new band alignments, defined at the interfaces, control the electronic properties of the system. Among the large family of 2D/2D heterostructures, the one formed by the combination of the most common semiconducting transition metal dichalcogenides, WS2 /MoS2 , has awakened great interest owing to its photovoltaic and photoelectrochemical properties. Solution as well as dry physical methods have been developed to optimize the synthesis of these heterostructures. Here, a suspension of negatively charged MoS2 flakes is mixed with a methanolic solution of a cationic W3 S4 -core cluster, giving rise to a homogeneous distribution of the clusters over the layers. In a second step, a calcination of this molecular/2D heterostructure under N2 leads to the formation of clean WS2 /MoS2 heterostructures, where the photoluminescence of both counterparts is quenched, proving an efficient interlayer coupling. Thus, this chemical method combines the advantages of a solution approach (simple, scalable, and low-cost) with the good quality interfaces reached by using more complicated traditional physical methods.
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Affiliation(s)
- Marc Morant-Giner
- Instituto de Ciencia Molecular, Universitat de València, C/ Catedrático José Beltrán, 2, 46980, Paterna, Spain
| | - Isaac Brotons-Alcázar
- Instituto de Ciencia Molecular, Universitat de València, C/ Catedrático José Beltrán, 2, 46980, Paterna, Spain
| | - Nikita Y Shmelev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.,Novosibirsk State University, 1 Pirogov str., Novosibirsk, 630090, Russia
| | - Artem L Gushchin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.,Novosibirsk State University, 1 Pirogov str., Novosibirsk, 630090, Russia
| | - Luke T Norman
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Andrei N Khlobystov
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Antonio Alberola
- Instituto de Ciencia Molecular, Universitat de València, C/ Catedrático José Beltrán, 2, 46980, Paterna, Spain
| | - Sergio Tatay
- Instituto de Ciencia Molecular, Universitat de València, C/ Catedrático José Beltrán, 2, 46980, Paterna, Spain
| | - Josep Canet-Ferrer
- Instituto de Ciencia Molecular, Universitat de València, C/ Catedrático José Beltrán, 2, 46980, Paterna, Spain
| | - Alicia Forment-Aliaga
- Instituto de Ciencia Molecular, Universitat de València, C/ Catedrático José Beltrán, 2, 46980, Paterna, Spain
| | - Eugenio Coronado
- Instituto de Ciencia Molecular, Universitat de València, C/ Catedrático José Beltrán, 2, 46980, Paterna, Spain
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