Gas sensing; High sensitivity; NH3 sensor; Optical microfibre; P-n heterojunctions; Rapid response; Ammonia gas; Micro-fiber; NH 3; Optical microfiber; Optical-; Electronic, Optical and Magnetic Materials; Atomic and Molecular Physics, and Optics; Electrical and Electronic Engineering
Abstract :
[en] In this work, we propose a synergistic framework between a p-n heterojunction and an optical microfibre for gas sensing, in which an n-type semiconductor, SnO2, and a p-type semiconductor, polyaniline (PANI), form on surface of the optical microfibre at room temperature. Owing to the strong interaction between evanescent waves and carriers of semiconductors, the device could detect ammonia gas with a high sensitivity of 3.98 pm/ppm and an extremely low theoretical limit of detection (LOD) of 15.2 ppm. Importantly, its ultrafast response time is experimentally achieved at 11 s with a recovery time of 7 s, which is lower than those of most reported ammonia gas sensing technologies. Based on the proposed innovative integration of optical fibre with a p-n heterojunction sensing strategy, this work could provide a new way to promote more high-performance hybrid optical and semiconductor sensing platforms.
Disciplines :
Materials science & engineering
Author, co-author :
Li, Hongtao ; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China ; Institute of Environment, Hefei Comprehensive National Science Center, Hefei, China
Hu, Wei; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China
Dai, Jiaoyan; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China
Cai, Shunshuo ; Microelectronics Instruments and Equipment R&D Center, Institute of Microelectronics, Chinese Academy of Sciences, Beijing, China
Huang, Lei; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China
Lu, Liang; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China
Lv, Jialiang; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China
Liu, Xue; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China ; Center of Free Electron Laser and High Magnetic Field, Anhui University, Hefei, China
Xu, Feng; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China
Li, Yujun; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China ; Center of Free Electron Laser and High Magnetic Field, Anhui University, Hefei, China
Yu, Benli; State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, School of Optoelectronic Science and Engineering, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, China
Caucheteur, Christophe ; Université de Mons - UMONS > Faculté Polytechnique > Service d'Electromagnétisme et Télécommunications
Language :
English
Title :
Integration of PANI-SnO2 heterojunctions with portable optical microfibre for advanced operando ammonia gas sensing
University Natural Science Research Project of Anhui Province Anhui Provincial Natural Science Foundation Institute of Energy, Hefei Comprehensive National Science Center National Natural Science Foundation of China National Natural Science Foundation of China
Funding text :
This work was supported by the National Natural Science Foundation of China (62105001, 62275001), Natural Science Foundation of Anhui Province (2508085MF162), Natural Science Research Project in Universities of Anhui Province (2024AH050047), Research Funds for Institute of Environmental Hefei Comprehensive National Science Center (HYKYTD2024009).
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