Optical fiber tip integrated photoelectrochemical sensors.

In this work, we design and fabricate a compact photoelectrochemical (PEC) sensor by integrating a graphene-MoS2 heterostructure on an optical fiber tip. The graphene serves as a transparent carrier transport layer, and the MoS2 presents a photoelectrical transducer that generates photocarriers and interacts with ascorbic acid (AA) in solution. This device is used to demonstrate a self-powered detection of AA with a concentration range between 1 mM and 50 mM, and a time response of ∼ 6 ms. The device downsizes traditional PEC systems to the micrometer scale, benefiting the real-time monitoring of biochemical changes in small areas and opening the pathway for miniaturized PEC sensing applications.

Citation

Haoshang Wang, Yifeng Xiong, Chenhui Wu, Hengtian Zhu, Ye Chen, Fei Xu. Optical fiber tip integrated photoelectrochemical sensors. Optics express. 2022 Feb 28;30(5):6818-6825

Mesh Tags

Substances

PMID: 35299460

search → result