Research output: Contribution to journal › Article › peer-review
WS2/MoS2 Heterostructures through Thermal Treatment of MoS2 Layers Electrostatically Functionalized with W3S4 Molecular Clusters. / Morant-Giner, Marc; Brotons-Alcázar, Isaac; Shmelev, Nikita Y. et al.
In: Chemistry - A European Journal, Vol. 26, No. 29, 20.05.2020, p. 6670-6678.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - WS2/MoS2 Heterostructures through Thermal Treatment of MoS2 Layers Electrostatically Functionalized with W3S4 Molecular Clusters
AU - Morant-Giner, Marc
AU - Brotons-Alcázar, Isaac
AU - Shmelev, Nikita Y.
AU - Gushchin, Artem L.
AU - Norman, Luke T.
AU - Khlobystov, Andrei N.
AU - Alberola, Antonio
AU - Tatay, Sergio
AU - Canet-Ferrer, Josep
AU - Forment-Aliaga, Alicia
AU - Coronado, Eugenio
N1 - Publisher Copyright: © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/5/20
Y1 - 2020/5/20
N2 - 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 W3S4-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.
AB - 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 W3S4-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.
KW - heterostructures
KW - stacked layers
KW - transition metal dichalcogenides
KW - W clusters
KW - WS/MoS
KW - HETEROJUNCTION
KW - EVOLUTION
KW - MoS2
KW - MOLYBDENUM
KW - WS2
KW - NANOSHEETS
KW - DISULFIDE
UR - http://www.scopus.com/inward/record.url?scp=85082477693&partnerID=8YFLogxK
U2 - 10.1002/chem.202000248
DO - 10.1002/chem.202000248
M3 - Article
C2 - 32045041
AN - SCOPUS:85082477693
VL - 26
SP - 6670
EP - 6678
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 29
ER -
ID: 23905750