Black Phosphorus All‐Fiber Sensor for Highly Responsive Humidity Detection. Issue 4 (3rd February 2020)

• Record Type: Journal Article
• Authors: Yu, De; Li, Jia; Wang, Tao; She, Xiaoyang; Sun, Yongrong; Li, Jianping; Zhang, Liang; Yu, Xue-Feng; Yang, Dexing
• Is Part Of: Physica status solidi. Volume 14:Issue 4(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-02-03
• Subjects: black phosphorus -- fiber optics -- humidity sensors -- 2D materials; Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.201900697
• Languages: English
• ISSNs: 1862-6254

Abstract

Abstract : Black phosphorus (BP) promises high‐performance humidity sensing, due to its unique electrical, mechanical, and surface properties. Different from traditional transistor‐based BP humidity sensors, herein, an all‐fiber sensing strategy is proposed by integrating BP nanosheets with etched single‐mode fiber (ESMF). The experiments show that transmitted light in the ESMF can be effectively modulated by the coated BP nanosheets as relative humidity varies from 35% to 80%. Due to the combination of unique sensing characteristics of BP materials with a high sensitivity of optical modulation strategy, highly responsive humidity sensing is achieved with the response time as fast as 7 ms. This work demonstrates a BP‐based all‐optical sensing platform not only for high‐performance humidity sensing, but also for opening up new opportunities for many potential vapor/gas sensing applications in the fields of biomedicine and chemistry. Abstract : An all‐fiber phosphorene humidity sensor is fabricated by integrating black phosphorus (BP) nanosheets with single‐mode fiber. The highly responsive sensing performance is achieved with the rapid response time of 7 ms. This work demonstrates a BP‐based all‐optical sensing platform, opening up new opportunities for potential vapor/gas sensing applications.