Kavli Affiliate: Xiang Zhang
| First 5 Authors: Abhijit Biswas, Rishi Maiti, Frank Lee, Cecilia Y. Chen, Tao Li
| Summary:
Room temperature growth of two-dimensional van der Waals (2D-vdW) materials
is indispensable for state-of-the-art nanotechnology as it supersedes the
requirement of elevated growth temperature accompanied with additional high
thermal budgets, and the possibility of intrinsic interfacial thermal diffusion
related deterioration of functional properties. Here, we demonstrated the
growth of ultrawide-bandgap boron nitride (BN) at room temperature by using the
pulsed laser deposition (PLD) process and demonstrated various functionalities
for potential applications. Comprehensive chemical, spectroscopic and
microscopic characterization confirms the growth of ordered nanosheets-like
hexagonal BN (h-BN). Functionally, films show hydrophobicity, high lubricity
(low coefficient of friction), low refractive index within the visible to
near-infrared wavelength range, and room temperature single-photon quantum
emission. Our work unveils an important step that brings a plethora of
applications ranging from the precise design of photonic devices, quantum
information technology, transparent lubricant coatings, chemically inert
capping layers for corrosive and ambient-air degradable materials, and 2D
flexible nano-electronics, thus creating a scenario for h-BN on demand at
frugal thermal budget.
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