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Air-Stable 2D van der Waals MgTeMoO6 Exhibits Strong In-plane Optical Anisotropy
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2024-05-03 , DOI: 10.1002/adom.202400474
Wei Liu 1, 2 , Zhipeng Du 2 , Belal Ahmed 2, 3 , Yunqi Zhao 2 , Jieyu Zheng 2 , Xianyu Song 2 , Ziyi Wang 2 , Xiaojun Kuang 1 , Junhua Luo 2 , Sangen Zhao 2
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2024-05-03 , DOI: 10.1002/adom.202400474
Wei Liu 1, 2 , Zhipeng Du 2 , Belal Ahmed 2, 3 , Yunqi Zhao 2 , Jieyu Zheng 2 , Xianyu Song 2 , Ziyi Wang 2 , Xiaojun Kuang 1 , Junhua Luo 2 , Sangen Zhao 2
Affiliation
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Exploring 2D van der Waals (vdW) materials is of great importance to the various optoelectronics-based applications. Herein, mono- and few-layer nanoflakes of a novel 2D vdW MgTeMoO6 are prepared by facile mechanical exfoliation method. These nanoflakes remain highly stable when being exposed in air even for 1 month, which is unique compared to most of 2D materials. Temperature-dependent Raman spectroscopy reveals that 2D MgTeMoO6 nanosheets exhibit stronger interlayer interaction than that of graphene. In situ, angle-resolved polarized Raman spectroscopy investigation show evidences for the anisotropic photo–phonon interactions. Notably, strong in-plane anisotropy for the second harmonic generation (SHG) independent of layer number is observed for 2D MgTeMoO6, making 2D MgTeMoO6 promising in polarization-sensitive optoelectronic applications.
中文翻译:
空气稳定二维范德华 MgTeMoO6 表现出强面内光学各向异性
探索二维范德华 (vdW) 材料对于各种基于光电子的应用非常重要。在此,通过简便的机械剥离方法制备了新型 2D vdW MgTeMoO 6 的单层和少层纳米薄片。这些纳米薄片即使暴露在空气中 1 个月也能保持高度稳定性,这与大多数 2D 材料相比是独一无二的。温度依赖性拉曼光谱表明,二维 MgTeMoO 6 纳米片表现出比石墨烯更强的层间相互作用。原位角分辨偏振拉曼光谱研究显示了各向异性光声子相互作用的证据。值得注意的是,二维 MgTeMoO 6 观察到与层数无关的二次谐波产生(SHG)的强面内各向异性,使得二维 MgTeMoO 6 在偏振敏感光电应用中具有广阔的前景。
更新日期:2024-05-03
中文翻译:
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空气稳定二维范德华 MgTeMoO6 表现出强面内光学各向异性
探索二维范德华 (vdW) 材料对于各种基于光电子的应用非常重要。在此,通过简便的机械剥离方法制备了新型 2D vdW MgTeMoO 6 的单层和少层纳米薄片。这些纳米薄片即使暴露在空气中 1 个月也能保持高度稳定性,这与大多数 2D 材料相比是独一无二的。温度依赖性拉曼光谱表明,二维 MgTeMoO 6 纳米片表现出比石墨烯更强的层间相互作用。原位角分辨偏振拉曼光谱研究显示了各向异性光声子相互作用的证据。值得注意的是,二维 MgTeMoO 6 观察到与层数无关的二次谐波产生(SHG)的强面内各向异性,使得二维 MgTeMoO 6 在偏振敏感光电应用中具有广阔的前景。