Journal
CRYSTAL GROWTH & DESIGN
Volume 17, Issue 9, Pages 4932-4935Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.cgd.7b00871
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Funding
- Materials Engineering and Processing Program of the National Science Foundation [CMMI 1538127]
- II-VI Foundation
- National Science Foundation (NSF CAREER Grant) [DMR-1552482]
- ARO [W911NF-16-1-0268]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1760668] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1538127] Funding Source: National Science Foundation
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Single crystals of hexagonal boron nitride (hBN) have recently been envisioned for electronic, optoelectronic, and nanophotonic applications. In this study, the production of large-scale, high-quality hBN single crystals via precipitation from a new solvent composed of Fe and Cr was demonstrated to be viable at atmospheric pressure. The clear and colorless crystals have a maximum domain size of around 2 mm and a thickness of around 200 Jim. The Raman spectra and photoluminescence emission spectra demonstrate that the crystals produced with this solvent are pure hBN phase, and with low defect and residual impurity concentrations. The use of an Fe Cr mixture provides a lower cost alternative to the more common Ni-Cr solvent for growing large hBN of comparable quality.
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