Deterministic Modification of CVD Grown Monolayer MoS2 with Optical Pulses
Deterministic Modification of CVD Grown Monolayer MoS2 with Optical Pulses
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DOI：
10.1002/admi.202002119
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发表时间：
2021-03
影响因子：
5.4
通讯作者：
Mikko Turunen;E. Hulkko;Kamila K. Mentel;Xueyin Bai;Suvi-Tuuli Akkanen;Mohammad Amini;Shisheng Li;H. Lipsanen;M. Pettersson;Zhipei Sun
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文献类型：
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作者：
Mikko Turunen;E. Hulkko;Kamila K. Mentel;Xueyin Bai;Suvi-Tuuli Akkanen;Mohammad Amini;Shisheng Li;H. Lipsanen;M. Pettersson;Zhipei Sun
过渡金属二卤化物单分子膜具有许多优良的光学和电学性质。本文报道了在惰性气氛中用飞秒脉冲对单层MoS_2的形貌和光学性质进行光学修饰。证明了在单层MoS_2上形成了高度可调至≈20 nm的三维结构。与未修饰的MoS2单层相比，这些光学修饰结构表现出明显不同的光学性质，如较低的光致发光强度和较长的荧光寿命。这些结果为机械、电子和光子应用提供了一种新的修饰过渡金属二卤化物材料的方法。
Transition metal dichalcogenide monolayers have demonstrated a number of exquisite optical and electrical properties. Here, the authors report the optical modification of topographical and optical properties of monolayer MoS2 with femtosecond pulses under an inert atmosphere. A formation of three‐dimensional structures on monolayer MoS2 with tunable height up to ≈20 nm is demonstrated. In contrast to unmodified monolayer MoS2, these optically modified structures show significantly different optical properties, such as lower photoluminescence intensity and longer fluorescence lifetime. The results suggest a novel way to modify transition metal dichalcogenide materials for mechanic, electronic and photonic applications.