Domain engineering of physical vapor deposited two-dimensional materials

Tarek Alam; Baoming Wang; Raghu Pulavarthy; M. A. Haque; Christopher Muratore; Nicholas Glavin; Ajit K. Roy; Andrey A. Voevodin

doi:10.1063/1.4902937

Domain engineering of physical vapor deposited two-dimensional materials

Tarek Alam, Baoming Wang, Raghu Pulavarthy, M. A. Haque, Christopher Muratore, Nicholas Glavin, Ajit K. Roy, Andrey A. Voevodin

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

15 Scopus citations

Abstract

Physical vapor deposited two-dimensional (2D) materials span larger areas compared to exfoliated flakes, but suffer from very small grain or domain sizes. In this letter, we fabricate freestanding molybdenum disulfide (MoS₂) and amorphous boron nitride (BN) specimens to expose both surfaces. We performed in situ heating in a transmission electron microscope to observe the domain restructuring in real time. The freestanding MoS₂ specimens showed up to 100× increase in domain size, while the amorphous BN transformed in to polycrystalline hexagonal BN (h-BN) at temperatures around 600°C much lower than the 850-1000°C range cited in the literature.

Original language	English (US)
Article number	213110
Journal	Applied Physics Letters
Volume	105
Issue number	21
DOIs	https://doi.org/10.1063/1.4902937
State	Published - Nov 24 2014

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4902937

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title = "Domain engineering of physical vapor deposited two-dimensional materials",

abstract = "Physical vapor deposited two-dimensional (2D) materials span larger areas compared to exfoliated flakes, but suffer from very small grain or domain sizes. In this letter, we fabricate freestanding molybdenum disulfide (MoS2) and amorphous boron nitride (BN) specimens to expose both surfaces. We performed in situ heating in a transmission electron microscope to observe the domain restructuring in real time. The freestanding MoS2 specimens showed up to 100× increase in domain size, while the amorphous BN transformed in to polycrystalline hexagonal BN (h-BN) at temperatures around 600°C much lower than the 850-1000°C range cited in the literature.",

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AU - Alam, Tarek

AU - Wang, Baoming

AU - Pulavarthy, Raghu

AU - Haque, M. A.

AU - Muratore, Christopher

AU - Glavin, Nicholas

AU - Roy, Ajit K.

AU - Voevodin, Andrey A.

PY - 2014/11/24

Y1 - 2014/11/24

N2 - Physical vapor deposited two-dimensional (2D) materials span larger areas compared to exfoliated flakes, but suffer from very small grain or domain sizes. In this letter, we fabricate freestanding molybdenum disulfide (MoS2) and amorphous boron nitride (BN) specimens to expose both surfaces. We performed in situ heating in a transmission electron microscope to observe the domain restructuring in real time. The freestanding MoS2 specimens showed up to 100× increase in domain size, while the amorphous BN transformed in to polycrystalline hexagonal BN (h-BN) at temperatures around 600°C much lower than the 850-1000°C range cited in the literature.

AB - Physical vapor deposited two-dimensional (2D) materials span larger areas compared to exfoliated flakes, but suffer from very small grain or domain sizes. In this letter, we fabricate freestanding molybdenum disulfide (MoS2) and amorphous boron nitride (BN) specimens to expose both surfaces. We performed in situ heating in a transmission electron microscope to observe the domain restructuring in real time. The freestanding MoS2 specimens showed up to 100× increase in domain size, while the amorphous BN transformed in to polycrystalline hexagonal BN (h-BN) at temperatures around 600°C much lower than the 850-1000°C range cited in the literature.

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Domain engineering of physical vapor deposited two-dimensional materials

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