Liang Fang, Wang Chaolun, Luo Chen, Xia Yin, Wang Yang, Xu Mengjian, Wang Hailu, Wang Teng, Zhu Yicheng, Wu Peisong, Ye Jiafu, Mu Gang, Zhu He, Wu Xing
Shanghai Key Laboratory of Multidimensional Information Processing, Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China.
Nanotechnology. 2020 Sep 11;31(37):374002. doi: 10.1088/1361-6528/ab9867. Epub 2020 Jun 1.
Broadband infrared photodetectors based on two-dimensional (2D) materials which are the research focus in the infrared field, have wide applications in remote sensing, thermal imaging, and astronomy observation. In this article, the photodetector based on 2D ferromagnetic material CoSe is studied at room temperature, demonstrating the air-stable, broadband, and up to long wavelength properties. The CoSe material is applied to infrared photodetectors for the first time. The 2D material CoSe is synthesized by using the chemical vapor deposition method. The size of the as-grown CoSe is up to 71.8 μm. The photoresponse of the CoSe photodetector ranges from 450 nm to 10.6 μm. The photoresponsivity of this photodetector is up to 2.58 A W under the 10.6 μm illumination at room temperature. This work provides a new material for broadband photodetector at room temperature and builds a bridge for the magnetoelectronic and broadband photoelectric fields.
基于二维（2D）材料的宽带红外光电探测器是红外领域的研究热点，在遥感、热成像和天文观测等方面有广泛应用。本文在室温下研究了基于二维铁磁材料CoSe的光电探测器，展示了其空气稳定性、宽带特性以及直至长波长的特性。CoSe材料首次应用于红外光电探测器。二维材料CoSe通过化学气相沉积法合成。生长的CoSe尺寸可达71.8μm。CoSe光电探测器的光响应范围为450nm至10.6μm。该光电探测器在室温下10.6μm光照下的光响应率高达2.58 A/W。这项工作为室温宽带光电探测器提供了一种新材料，并为磁电子和宽带光电领域搭建了一座桥梁。
