当前和未来应用的可扩展六方氮化硼 (h-BN) 合成综述,Advanced Materials

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当前和未来应用的可扩展六方氮化硼 (h-BN) 合成综述
Advanced Materials ( IF 27.4 ) Pub Date : 2022-11-03 , DOI: 10.1002/adma.202207374
Andrew E Naclerio ₁ , Piran R Kidambi _{1,

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Affiliation

六方氮化硼 ( h -BN) 是一种层状无机合成晶体，具有高温稳定性和高导热性。作为一种陶瓷材料，它已广泛用于热管理、隔热、润滑以及作为结构复合材料的填充材料。从层状范德瓦尔斯晶体中分离出原子级薄单层以研究其独特性质的最新科学进展推动了对单层/少层h -BN 作为纳米电子、隧道势垒、通信、中子探测器、光学的宽带隙绝缘支持的研究兴趣、传感、新型分离、缺陷的量子发射等。实现这些未来应用取决于可扩展的具有成本效益的高质量h-BN合成。在这里，作者回顾了高质量单层/多层h- BN 合成的可扩展方法，讨论了每种方法的挑战和机遇，并将它们与新兴应用的相关性结合起来。随着原子结合到生长的层状晶体中，保持化学计量平衡 B:N = 1 并在多层合成过程中保持层间堆叠顺序成为h -BN 合成和开发工艺以解决这些方面的一些主要挑战可以告知和指导具有多个组成元素的其他层状材料的合成。最后，作者通过技术路线图将h -BN 合成工作与新兴应用的质量要求结合起来。

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A Review of Scalable Hexagonal Boron Nitride (h-BN) Synthesis for Present and Future Applications

Hexagonal boron nitride (h-BN) is a layered inorganic synthetic crystal exhibiting high temperature stability and high thermal conductivity. As a ceramic material it has been widely used for thermal management, heat shielding, lubrication, and as a filler material for structural composites. Recent scientific advances in isolating atomically thin monolayers from layered van der Waals crystals to study their unique properties has propelled research interest in mono/few layered h-BN as a wide bandgap insulating support for nanoscale electronics, tunnel barriers, communications, neutron detectors, optics, sensing, novel separations, quantum emission from defects, among others. Realizing these futuristic applications hinges on scalable cost-effective high-quality h-BN synthesis. Here, the authors review scalable approaches of high-quality mono/multilayer h-BN synthesis, discuss the challenges and opportunities for each method, and contextualize their relevance to emerging applications. Maintaining a stoichiometric balance B:N = 1 as the atoms incorporate into the growing layered crystal and maintaining stacking order between layers during multi-layer synthesis emerge as some of the main challenges for h-BN synthesis and the development of processes to address these aspects can inform and guide the synthesis of other layered materials with more than one constituent element. Finally, the authors contextualize h-BN synthesis efforts along with quality requirements for emerging applications via a technological roadmap.

更新日期：2022-11-03

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