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Gas Sensors: The Role of NiO Doping in Reducing the Impact of Humidity on the Performance of SnO 2 ‐Based Gas Sensors: Synthesis Strategies, and Phenomenological and Spectroscopic Studies (Adv. Funct. Mater. 23/2011)
Author(s) -
Kim HaeRyong,
Haensch Alexander,
Kim IlDoo,
Barsan Nicolae,
Weimar Udo,
Lee JongHeun
Publication year - 2011
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201190110
Subject(s) - non blocking i/o , humidity , materials science , doping , nanostructure , chemical engineering , nanotechnology , optoelectronics , meteorology , physics , catalysis , chemistry , biochemistry , engineering
The loading of NiO provides a new strategy to achieve humidity‐independent SnO 2 gas sensors. When NiO is loaded to hierarchical SnO 2 nanostructures, the humidity dependence of the gas sensing characteris‐tics, such as gas sensitivity, response speed, recovery speed, and resistance in air, are decreased to a negli‐gible level. On page 4456 , Nicolae Barsan, Jong‐Heun Lee, and co‐workers confirmed that NiO plays the key role of a strong humidity absorber and protects the SnO 2 from the influence of water‐derived species.