P1.7.9 Highly sensitive NO2 sensor based on monodispersed WO3 nanoparticles

Event
14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany
Chapter
P1.7 Nanostructured Metal Oxide-based Sensors
Author(s)
L. You, F. Yang, X. He, Y. Sun, G. Lu - State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University (China)
Pages
1081 - 1084
DOI
10.5162/IMCS2012/P1.7.9
ISBN
978-3-9813484-2-2
Price
free

Abstract

Monodispersed tungsten oxide nanoparticles were obtained by sintering the hydrothermally synthesized precursor. The size of particle can be controlled from 25 nm to 100 nm via adjustment the concentration of surfactant and annealing temperature. The thick film sensors based on as-prepared samples were fabricated and evaluated. The results manifested that the size of particle and sintered temperature had great influence on the sensing properties. The sensor had good repeatability and stability. The gas response to 40 ppb NO2 gas, which covered environmental standard, was about 2.

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