Spontaneous chemical functionalization via coordination of Au single atoms on monolayer MoS2

Author(s):Show less -

Liu, He ^[1] ; Grasseschi, Daniel ^{[2, 3]} ; Dodda, Akhil ^[4] ; Fujisawa, Kazunori ^{[5, 6, 7]} ; Olson, David ^[8] ; Kahn, Ethan ^[9] ; Zhang, Fu ^[9] ; Zhang, Tianyi ^[9] ; Lei, Yu ^[9] ; Branco, Ricardo Braga Nogueira ^[10] ; Elias, Ana Laura ^{[5, 6, 11]} ; Silva, Rodolfo Cruz ^{[7, 12]} ; Yeh, Yin-Ting ^{[5, 6]} ; Maroneze, Camila M. ^[2] ; Seixas, Leandro ^[2] ; Hopkins, Patrick ^{[13, 8, 14]} ; Das, Saptarshi ^{[9, 4]} ; de Matos, Christiano J. S. ^[2] ; Terrones, Mauricio ^{[9, 5, 6, 1]}

Affiliation:Show less -

^[1] Penn State Univ, Dept Chem, University Pk, PA 16802 - USA

^[2] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, BR-01302907 Sao Paulo - Brazil

^[3] Fed Univ Rio de Janeiro UFRJ, Chem Inst, Inorgan Chem Dept, Surface Chem & Nanomat Lab, BR-21941909 Rio De Janeiro - Brazil

^[4] Penn State Univ, Engn Sci & Mech, University Pk, PA 16802 - USA

^[5] Penn State Univ, Dept Phys, University Pk, PA 16802 - USA

^[6] Penn State Univ, Ctr Dimens & Layered Mat 2, University Pk, PA 16802 - USA

^[7] Shinshu Univ, Res Initiat Supra Mat RISM, Wakasato, Nagano 3808553 - Japan

^[8] Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA 22904 - USA

^[9] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 - USA

^[10] Penn State Univ, Dept Aerosp Engn, University Pk, PA 16802 - USA

^[11] SUNY Binghamton, Dept Phys, Binghamton, NY 13902 - USA

^[12] Shinshu Univ, Global Aqua Innovat Ctr, Fac Engn, 4-17-1 Wakasato, Nagano 8553 - Japan

^[13] Univ Virginia, Dept Phys, Charlottesville, VA 22904 - USA

^[14] Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22904 - USA

• Document type: Journal article
• Source: SCIENCE ADVANCES; v. 6, n. 49 DEC 2020.
• Web of Science Citations: 0

Abstract

Surface functionalization of metallic and semiconducting 2D transition metal dichalcogenides (TMDs) have mostly relied on physi- and chemi-sorption at defect sites, which can diminish the potential applications of the decorated 2D materials, as structural defects can have substantial drawbacks on the electronic and optoelectronic characteristics. Here, we demonstrate a spontaneous defect-free functionalization method consisting of attaching Au single atoms to monolayers of semiconducting MoS2 (1H) via S-Au-Cl coordination complexes. This strategy offers an effective and controllable approach for tuning the Fermi level and excitation spectra of MoS2 via p-type doping and enhancing the thermal boundary conductance of monolayer MoS2, thus promoting heat dissipation. The coordination-based method offers an effective and damage-free route of functionalizing TMDs and can be applied to other metals and used in single-atom catalysis, quantum information devices, optoelectronics, and enhanced sensing. (AU)

• FAPESP's process: 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration
• Grantee: Antonio Helio de Castro Neto
• Support Opportunities: Research Projects - SPEC Program
• FAPESP's process: 15/11779-4 - Plasmonic and nonlinear effects in graphene coupled to optical waveguides
• Grantee: Christiano José Santiago de Matos
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 17/01817-1 - Synthesis of graphene nanostructures for plasmonic applications
• Grantee: Daniel Grasseschi
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor