Optical fiber tip integrated photoelectrochemical sensors

被引：7
|
作者：
Wang, Haoshang [1 ,2 ]
Xiong, Yifeng [1 ,2 ]
Wu, Chenhui [1 ,2 ]
Zhu, Hengtian [1 ,2 ]
Chen, Ye [1 ,2 ]
Xu, Fei [1 ,2 ]
机构：
[1] Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210023, Peoples R China
[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210023, Peoples R China
来源：
OPTICS EXPRESS | 2022年 / 30卷 / 05期
基金：
中国国家自然科学基金;
关键词：
CDS QUANTUM DOTS; LABEL-FREE; COLORIMETRIC STRATEGY; GRAPHENE; DNA; PHOTODETECTOR; IMMUNOSENSOR; SURFACE;
D O I：
10.1364/OE.452551
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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 similar to 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. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码：6818 / 6825
页数：8
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