TY - JOUR
T1 - Langmuir-Blodgett organic films deposition for the formation of conformal 2D inorganic-organic heterostructures
AU - Khenkin, Michal
AU - Mohapatra, Pranab K.
AU - Kaziev, Boris
AU - Patsha, Avinash
AU - Beitner, Daniel
AU - Shekhter, Pini
AU - Cohen, Assael
AU - Dutta, Debopriya
AU - Balasubrahmaniyam, Mukundakumar
AU - Golombek, Adina
AU - Koren, Elad
AU - Schwartz, Tal
AU - Richter, Shachar
AU - Ismach, Ariel
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/5/15
Y1 - 2024/5/15
N2 - 2D inorganic materials offer the opportunity to design and build heterostructures with unprecedented atomic control down to a monolayer. Integrating inorganic 2D layered materials, with the unlimited variety of organic molecules, provides a good platform for basic research and the formation of functional 2D organic-inorganic heterostructures, with tailored optoelectronic properties. In this work, we propose to employ a Langmuir-Blodgett (LB) monolayer deposition technique for the large-scale assembly of 2D inorganic-organic heterostructures. First, the transition-metal dichalcogenide monolayers (TMDCs), MoS2 and WSe2, are grown by a chemical vapor deposition (CVD)-based method. This is followed by the LB deposition of a monolayer(s) of Zn(II)-5-(4-aminophenyl)-10,15,20-(triphenyl)porphyrin (Zn-TPP(1f)). The morphology, optical and electrical properties were systematically studied for the two TMDC systems. Despite the similarities between both TMDCs, their heterostructures with Zn-TPP(1f) monolayers show a very different optical response; a strong quenching of the photoluminescence intensity is measured for the Zn-TPP(1f)/MoS2 system, an opposite trend, PL enhancement, is obtained for the WSe2 based heterostructure. These results are explained by the differences within their electronic band diagrams, as elucidated using a wide variety of spectroscopic methodologies. The orthogonal impact on the PL emission may serve as a general platform for the formation of 2D organic-inorganic heterostructures, with controlled optical properties.
AB - 2D inorganic materials offer the opportunity to design and build heterostructures with unprecedented atomic control down to a monolayer. Integrating inorganic 2D layered materials, with the unlimited variety of organic molecules, provides a good platform for basic research and the formation of functional 2D organic-inorganic heterostructures, with tailored optoelectronic properties. In this work, we propose to employ a Langmuir-Blodgett (LB) monolayer deposition technique for the large-scale assembly of 2D inorganic-organic heterostructures. First, the transition-metal dichalcogenide monolayers (TMDCs), MoS2 and WSe2, are grown by a chemical vapor deposition (CVD)-based method. This is followed by the LB deposition of a monolayer(s) of Zn(II)-5-(4-aminophenyl)-10,15,20-(triphenyl)porphyrin (Zn-TPP(1f)). The morphology, optical and electrical properties were systematically studied for the two TMDC systems. Despite the similarities between both TMDCs, their heterostructures with Zn-TPP(1f) monolayers show a very different optical response; a strong quenching of the photoluminescence intensity is measured for the Zn-TPP(1f)/MoS2 system, an opposite trend, PL enhancement, is obtained for the WSe2 based heterostructure. These results are explained by the differences within their electronic band diagrams, as elucidated using a wide variety of spectroscopic methodologies. The orthogonal impact on the PL emission may serve as a general platform for the formation of 2D organic-inorganic heterostructures, with controlled optical properties.
UR - http://www.scopus.com/inward/record.url?scp=85185603517&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2024.159587
DO - 10.1016/j.apsusc.2024.159587
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AN - SCOPUS:85185603517
SN - 0169-4332
VL - 655
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 159587
ER -