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Highly Sensitive Detection of Polarized Light Using Anisotropic 2D ReS2 |
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| Authors: | Fucai Liu Shoujun Zheng Xuexia He Apoorva Chaturvedi Junfeng He Wai Leong Chow Thomas R Mion Xingli Wang Jiadong Zhou Qundong Fu Hong Jin Fan Beng Kang Tay Li Song Rui‐Hua He Christian Kloc Pulickel M Ajayan Zheng Liu |
| Affiliation: | 1. School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore;2. Centre for Disruptive Photonic Technologies, School of Physics and Mathematics Sciences, Nanyang Technological University, Singapore, Singapore;3. Department of Physics, Boston College, Chestnut Hill, MA, USA;4. NOVITAS, Centre for Micro‐/Nano‐electronics School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore;5. CINTRA CNRS/NTU/THALES, UMI 3288, Research Techno Plaza, Singapore, Singapore;6. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, P. R. China;7. Department of Materials Science and Nanoengineering, Rice University, Houston, TX, USA;8. Center for Programmable Materials School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore |
| Abstract: | Due to the novel optical and optoelectronic properties, 2D materials have received increasing interests for optoelectronics applications. Discovering new properties and functionalities of 2D materials is challenging yet promising. Here broadband polarization sensitive photodetectors based on few layer ReS2 are demonstrated. The transistor based on few layer ReS2 shows an n‐type behavior with the mobility of about 40 cm2 V?1 s?1 and on/off ratio of 105. The polarization dependence of photoresponse is ascribed to the unique anisotropic in‐plane crystal structure, consistent with the optical absorption anisotropy. The linear dichroic photodetection with a high photoresponsivity reported here demonstrates a route to exploit the intrinsic anisotropy of 2D materials and the possibility to open up new ways for the applications of 2D materials for light polarization detection. |
| Keywords: | 2D materials anisotropy linear dichroism photoresponse ReS2 |