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Black Phosphorus All‐Fiber Sensor for Highly Responsive Humidity Detection
Author(s) -
Yu De,
Li Jia,
Wang Tao,
She Xiaoyang,
Sun Yongrong,
Li Jianping,
Zhang Liang,
Yu Xue-Feng,
Yang Dexing
Publication year - 2020
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201900697
Subject(s) - black phosphorus , humidity , materials science , modulation (music) , optoelectronics , optical fiber , relative humidity , fiber optic sensor , fiber , transistor , nanotechnology , computer science , telecommunications , composite material , electrical engineering , acoustics , meteorology , engineering , physics , voltage
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.