论文标题
二维GA $ _2 $ o $ _3 $玻璃：单层WS $ _2 $的大规模钝化和保护材料
Two-dimensional Ga$_2$O$_3$ glass: a large scale passivation and protection material for monolayer WS$_2$
论文作者
论文摘要
原子上薄的过渡金属二分法晶体（TMDC）具有非凡的光学特性，使其对未来的光电应用具有吸引力。将TMDC集成到实用的全核异质结构中，取决于奴役和保护它们免受大规模上必要的制造步骤的能力。尽管具有有限的可伸缩性，但目前在六角形硼硼（HBN）中对TMDC的封装目前没有可行的替代方案来实现最终设备的高性能。在这里，我们证明了小说的超薄ga $ _2 $ o $ _3 $玻璃是一种理想的厘米级涂料材料，可增强单层的光学性能，并保护它们免受进一步的材料沉积。特别是，GA $ _2 $ o $ _3 $商业级封盖$ _2 $单层在室温下的可伸缩性和光学性能都优于HBN。这些属性使GA $ _2 $ o $ _3 $高度适用于功能异质结构中单层TMDC的大规模钝化和保护。
Atomically thin transition metal dichalcogenide crystals (TMDCs) have extraordinary optical properties that make them attractive for future optoelectronic applications. Integration of TMDCs into practical all-dielectric heterostructures hinges on the ability to passivate and protect them against necessary fabrication steps on large scales. Despite its limited scalability, encapsulation of TMDCs in hexagonal boron nitride (hBN) currently has no viable alternative for achieving high performance of the final device. Here, we show that the novel, ultrathin Ga$_2$O$_3$ glass is an ideal centimeter-scale coating material that enhances optical performance of the monolayers and protects them against further material deposition. In particular, Ga$_2$O$_3$ capping of commercial grade WS$_2$ monolayers outperforms hBN in both scalability and optical performance at room temperature. These properties make Ga$_2$O$_3$ highly suitable for large scale passivation and protection of monolayer TMDCs in functional heterostructures.
