Applied Physics Letters
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.
213110-1 to 213110-5
Copyright © 2014, AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
Alam, Tarek; Wang, Baoming; Pulavarthy, Raghu; Haque, M. Amanul; Muratore, Christopher; Glavin, Nicholas R.; Roy, Ajit K.; and Voevodin, Andrey A., "Domain Engineering of Physical Vapor Deposited Two-Dimensional Materials" (2014). Chemical and Materials Engineering Faculty Publications. 98.