Enhancing Light–Matter Interactions in MoS2 by Copper Intercalation

Chen Stern; Avraham Twitto; Rifael Z. Snitkoff; Yafit Fleger; Sabyasachi Saha; Loukya Boddapati; Akash Jain; Mengjing Wang; Kristie J. Koski; Francis Leonard Deepak; Ashwin Ramasubramaniam; Doron Naveh

doi:10.1002/adma.202008779

Enhancing Light–Matter Interactions in MoS₂ by Copper Intercalation

Chen Stern, Avraham Twitto, Rifael Z. Snitkoff, Yafit Fleger, Sabyasachi Saha, Loukya Boddapati, Akash Jain, Mengjing Wang, Kristie J. Koski, Francis Leonard Deepak, Ashwin Ramasubramaniam, Doron Naveh

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The intercalation of layered compounds opens up a vast space of new host–guest hybrids, providing new routes for tuning the properties of materials. Here, it is shown that uniform and continuous layers of copper can be intercalated within the van der Waals gap of bulk MoS₂ resulting in a unique Cu–MoS₂ hybrid. The new Cu–MoS₂ hybrid, which remains semiconducting, possesses a unique plasmon resonance at an energy of ≈1eV, giving rise to enhanced optoelectronic activity. Compared with high-performance MoS₂ photodetectors, copper-enhanced devices are superior in their spectral response, which extends into the infrared, and also in their total responsivity, which exceeds 10⁴ A W⁻¹. The Cu–MoS₂ hybrids hold promise for supplanting current night-vision technology with compact, advanced multicolor night vision.

Original language	English
Article number	2008779
Journal	Advanced Materials
Volume	33
Issue number	23
DOIs	https://doi.org/10.1002/adma.202008779
State	Published - 10 Jun 2021

Bibliographical note

Funding Information:
A.J. and A.R. gratefully acknowledge research funding from the U.S. National Science Foundation (NSF‐BSF 1808011) and computational support from the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number ACI‐1548562. D.N. would like to thank the Binational Science Foundation and U.S. National Science Foundation for jointly funding of this work with grant 2017655. The authors would like to thank Ilana Perelshtein for assistance with TEM imaging, Hadas Alon, Moshe Kirshner, and Mark Oksman for technical assistance. L.B. acknowledges the NanoTRAINforGrowth II program by the European Commission through the Horizon 2020 Marie Sklodowska Curie COFUND Programme (2015), and support provided by the International Iberian Nanotechnology Laboratory. F.L.D. would like to acknowledge the “Correlated Analysis of Inorganic Solar Cells in and outside an Electron Microscope (CASOLEM)” project (PTDC/NAN‐MAT/28917/2017), co‐funded by FCT and ERDF through COMPETE2020.

Funding Information:
A.J. and A.R. gratefully acknowledge research funding from the U.S. National Science Foundation (NSF-BSF 1808011) and computational support from the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number ACI-1548562. D.N. would like to thank the Binational Science Foundation and U.S. National Science Foundation for jointly funding of this work with grant 2017655. The authors would like to thank Ilana Perelshtein for assistance with TEM imaging, Hadas Alon, Moshe Kirshner, and Mark Oksman for technical assistance. L.B. acknowledges the NanoTRAINforGrowth II program by the European Commission through the Horizon 2020 Marie Sklodowska Curie COFUND Programme (2015), and support provided by the International Iberian Nanotechnology Laboratory. F.L.D. would like to acknowledge the ?Correlated Analysis of Inorganic Solar Cells in and outside an Electron Microscope (CASOLEM)? project (PTDC/NAN-MAT/28917/2017), co-funded by FCT and ERDF through COMPETE2020.

Publisher Copyright:
© 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH

Keywords

MoS
copper intercalation
photodetectors

Access to Document

10.1002/adma.202008779

Cite this

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abstract = "The intercalation of layered compounds opens up a vast space of new host–guest hybrids, providing new routes for tuning the properties of materials. Here, it is shown that uniform and continuous layers of copper can be intercalated within the van der Waals gap of bulk MoS2 resulting in a unique Cu–MoS2 hybrid. The new Cu–MoS2 hybrid, which remains semiconducting, possesses a unique plasmon resonance at an energy of ≈1eV, giving rise to enhanced optoelectronic activity. Compared with high-performance MoS2 photodetectors, copper-enhanced devices are superior in their spectral response, which extends into the infrared, and also in their total responsivity, which exceeds 104 A W−1. The Cu–MoS2 hybrids hold promise for supplanting current night-vision technology with compact, advanced multicolor night vision.",

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