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Flexible Gas Sensors: Room‐Temperature Solid‐State Grown WO 3−δ Film on Plastic Substrate for Extremely Sensitive Flexible NO 2 Gas Sensors (Adv. Mater. Interfaces 1/2018)
Author(s) -
Annapureddy Venkateswarlu,
Kim Yonghun,
Hwang GeonTae,
Jang Ho Won,
Kim SungDae,
Choi JongJin,
Cho Byungjin,
Ryu Jungho
Publication year - 2018
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201870001
Subject(s) - materials science , detection limit , response time , tungsten oxide , tungsten , nanotechnology , oxide , solid state , substrate (aquarium) , scalability , chemical engineering , optoelectronics , analytical chemistry (journal) , computer science , chemistry , chromatography , computer graphics (images) , oceanography , database , engineering , metallurgy , geology
A simple, scalable, and time‐ and cost efficient approach for enhancement of sensing capability of chemiresistive flexible gas sensors based on nonstoichiometric tungsten oxide (WO 3−δ ) created using the granule spray in vacuum technique at room temperature is demonstrated. A linear sensor response was achieved for gas concentrations of sub‐ppm to tens of ppm with the detection limit 1.88 (±0.128) for NO 2 gas. The gas detection response/recovery (17/25 s) time is relatively fast. More details can be found in article number 1700811 by Byungjin Cho, Jungho Ryu and co‐workers.