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Title: Self-assembly of electronically abrupt borophene/organic lateral heterostructures

Journal Article · · Science Advances
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [4]; ORCiD logo [5];  [6]
  1. Northwestern Univ., Evanston, IL (United States). Applied Physics Graduate Program
  2. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
  3. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering; Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
  5. Northwestern Univ., Evanston, IL (United States). Applied Physics Graduate Program; Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering; Northwestern Univ., Evanston, IL (United States). Dept. of Engineering Sciences and Applied Mathematics; Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
  6. Northwestern Univ., Evanston, IL (United States). Applied Physics Graduate Program; Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Northwestern Univ., Evanston, IL (United States). Dept. of Electrical Engineering and Computer Science

Two-dimensional boron sheets (that is, borophene) have recently been realized experimentally and found to have promising electronic properties. Because electronic devices and systems require the integration of multiple materials with well-defined interfaces, it is of high interest to identify chemical methods for forming atomically abrupt heterostructures between borophene and electronically distinct materials. Toward this end, we demonstrate the selfassembly of lateral heterostructures between borophene and perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA). These lateral heterostructures spontaneously form upon deposition of PTCDA onto submonolayer borophene on Ag(111) substrates as a result of the higher adsorption enthalpy of PTCDA on Ag(111) and lateral hydrogen bonding among PTCDA molecules, as demonstrated by molecular dynamics simulations. In situ x-ray photoelectron spectroscopy confirms the weak chemical interaction between borophene and PTCDA, while molecular-resolution ultrahigh-vacuum scanning tunneling microscopy and spectroscopy reveal an electronically abrupt interface at the borophene/PTCDA lateral heterostructure interface. As the first demonstration of a borophene-based heterostructure, this work will inform emerging efforts to integrate borophene into nanoelectronic applications

Research Organization:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1625966
Journal Information:
Science Advances, Vol. 3, Issue 2; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (17)

2D Boron Sheets: Structure, Growth, and Electronic and Thermal Transport Properties journal August 2019
Recent Advances in Growth of Novel 2D Materials: Beyond Graphene and Transition Metal Dichalcogenides journal July 2018
Interface Characterization and Control of 2D Materials and Heterostructures journal July 2018
Flat Boron: A New Cousin of Graphene journal June 2019
Emerging Applications of Elemental 2D Materials journal October 2019
Geometric imaging of borophene polymorphs with functionalized probes journal April 2019
Large-area borophene sheets on sacrificial Cu(111) films promoted by recrystallization from subsurface boron journal August 2019
Intermixing and periodic self-assembly of borophene line defects journal July 2018
Borophene as a prototype for synthetic 2D materials development journal June 2018
From planar boron clusters to borophenes and metalloborophenes journal September 2017
Two-dimensional boron: structures, properties and applications journal January 2017
Quantum oscillation in carrier transport in two-dimensional junctions journal January 2018
Semiconducting defect-free polymorph of borophene: Peierls distortion in two dimensions journal December 2018
Near-equilibrium growth from borophene edges on silver journal September 2019
Borophene-graphene heterostructures journal October 2019
Emerging Applications of Elemental 2D Materials. text January 2020
Quantum oscillation in carrier transport in two-dimensional junctions preprint January 2018

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