Fabrication of tin substituted nickel ferrite (Sn-NiFe2O4) thin film and its application as opto-electronic humidity sensor

[Display omitted] •The tin substituted nickel ferrite thin film has been prepared by simple and cost effective method.•The sensing film exhibits negligible aging effect and better reproducibility.•The sensing film shows average sensitivity of 2.08 MΩ/%RH. A well nanocrystalline structured tin substi...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. 2018-04, Vol.272, p.267-273
Main Authors: Manikandan, V., Sikarwar, Samiksha, Yadav, B.C., Mane, R.S.
Format: Article
Language:English
Subjects:
Chemical precipitation
Humidity
Humidity sensor
Infrared radiation
Morphology
Nanocrystals
Nanostructured ferrites
Nickel ferrites
Optoelectronic devices
Organic chemistry
Reproducibility
Scanning electron microscopy
Sensitivity analysis
Sensors
Studies
Substitutes
Surface morphology
Thin film
Thin films
Tin
Titanium nitride
Transmission electron microscopy
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Summary:[Display omitted] •The tin substituted nickel ferrite thin film has been prepared by simple and cost effective method.•The sensing film exhibits negligible aging effect and better reproducibility.•The sensing film shows average sensitivity of 2.08 MΩ/%RH. A well nanocrystalline structured tin substituted nickel ferrite thin film was prepared by chemical co-precipitation method. XRD analysis reveals the average crystallite size as 51 nm and most preferential peak (311) affirms the formation of tin substituted nickel ferrite. The SEM morphology shows the large number of active sites. FT-IR analysis reveals the general nature of ferrite materials. TEM analysis shows the inhomogeneous distribution of particles. Also, the SAED pattern exhibits the polycrystalline nature. From UV analysis, it was observed that material has absorption in visible region at ∼201 nm. Humidity sensing analysis reveals that material has average sensitivity is 2.08 MΩ/%RH and excellent reproducibility with response and recovery times of 44 and 180 s respectively.
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2018.01.059