Broadband Polarization-Sensitive Photodetection of Magnetic Semiconducting MnTe Nanoribbons.
Broadband Polarization-Sensitive Photodetection of Magnetic Semiconducting MnTe Nanoribbons.
复制标题
DOI：
10.1002/smll.202300246
复制
发表时间：
2023-04
期刊：
影响因子：
13.3
通讯作者：
Kun Ye;Jun Yan;Lixuan Liu;Penghui Li;Zhipeng Yu;Yang Gao;Mengmeng Yang;He Huang;A. Nie;Yu Shu;J. Xiang;Shouguo Wang;Zhongyuan Liu
中科院分区：
文献类型：
--
作者：
Kun Ye;Jun Yan;Lixuan Liu;Penghui Li;Zhipeng Yu;Yang Gao;Mengmeng Yang;He Huang;A. Nie;Yu Shu;J. Xiang;Shouguo Wang;Zhongyuan Liu
低对称性二维材料由于其各向异性的优势在偏振敏感光电探测中得到了广泛的应用。本文报道了可控生长的六方磁性半导体α-MnTe纳米带具有高度各向异性的（100）表面和在宽带光电探测中对偏振的高灵敏度，而六方结构是高度对称的。α-MnTe纳米带的出色光响应发生在从紫外（UV，360 nm）到近红外（NIR，914 nm）的宽带范围内，具有46 ms（上升）和37 ms（下降）的短响应时间，优异的环境稳定性和可重复性。此外，由于α-MnTe纳米带具有高度的各向异性（100）表面，在紫外-近红外波段的光照射下，α-MnTe纳米带作为光电探测器表现出很高的偏振灵敏度和高达2.8的二色性比。这些结果表明，二维磁性半导体α-MnTe纳米带提供了一个有前途的平台，设计下一代偏振敏感的光电探测器在宽带范围内。
2D materials with low symmetry are explored in recent years because of their anisotropic advantage in polarization-sensitive photodetection. Herein the controllably grown hexagonal magnetic semiconducting α-MnTe nanoribbons are reported with a highly anisotropic (100) surface and their high sensitivity to polarization in a broadband photodetection, whereas the hexagonal structure is highly symmetric. The outstanding photoresponse of α-MnTe nanoribbons occurs in a broadband range from ultraviolet (UV, 360 nm) to near infrared (NIR, 914 nm) with short response times of 46 ms (rise) and 37 ms (fall), excellent environmental stability, and repeatability. Furthermore, due to highly anisotropic (100) surface, the α-MnTe nanoribbons as photodetector exhibit attractive sensitivity to polarization and high dichroic ratios of up to 2.8 under light illumination of UV-to-NIR wavelengths. These results demonstrate that 2D magnetic semiconducting α-MnTe nanoribbons provide a promising platform to design the next-generation polarization-sensitive photodetectors in a broadband range.