Kim Suk Hyun, Park Kyeong Ho, Lee Young Gie, Kang Seong Jun, Park Yongsup, Kim Young Duck
Department of Physics, Kyung Hee University, Seoul 02447, Republic of Korea.
Department of Information Display, Kyung Hee University, Seoul 02447, Republic of Korea.
Nanomaterials (Basel). 2023 Aug 15;13(16):2344. doi: 10.3390/nano13162344.
Atomically thin two-dimensional (2D) hexagonal boron nitride (hBN) has emerged as an essential material for the encapsulation layer in van der Waals heterostructures and efficient deep ultraviolet optoelectronics. This is primarily due to its remarkable physical properties and ultrawide bandgap (close to 6 eV, and even larger in some cases) properties. Color centers in hBN refer to intrinsic vacancies and extrinsic impurities within the 2D crystal lattice, which result in distinct optical properties in the ultraviolet (UV) to near-infrared (IR) range. Furthermore, each color center in hBN exhibits a unique emission spectrum and possesses various spin properties. These characteristics open up possibilities for the development of next-generation optoelectronics and quantum information applications, including room-temperature single-photon sources and quantum sensors. Here, we provide a comprehensive overview of the atomic configuration, optical and quantum properties, and different techniques employed for the formation of color centers in hBN. A deep understanding of color centers in hBN allows for advances in the development of next-generation UV optoelectronic applications, solid-state quantum technologies, and nanophotonics by harnessing the exceptional capabilities offered by hBN color centers.
原子级薄的二维（2D）六方氮化硼（hBN）已成为范德华异质结构中封装层和高效深紫外光电器件的重要材料。这主要归因于其卓越的物理性能和超宽带隙（接近6 eV，在某些情况下甚至更大）特性。hBN中的色心是指二维晶格中的本征空位和外在杂质，它们在紫外（UV）到近红外（IR）范围内产生独特的光学性质。此外，hBN中的每个色心都表现出独特的发射光谱并具有各种自旋特性。这些特性为下一代光电器件和量子信息应用的发展开辟了可能性，包括室温单光子源和量子传感器。在此，我们全面概述了hBN中色心的原子构型、光学和量子性质以及用于形成色心的不同技术。深入了解hBN中的色心有助于通过利用hBN色心提供的特殊能力，推动下一代紫外光电子应用、固态量子技术和纳米光子学的发展。
