Application of principal component analysis to the conductometric Cr1−xFexNbO4 (x = 0, 0.5, 1.0) thick films gas sensors

Author

Murthy, A. Sree Rama ; Gnanasekar, K.I. ; Jayaraman, V. ; Umarji, A.M.

Author_Institution

Mater. Chem. Div., Indira Gandhi Centre for Atomic Res., Kalpakkam, India

fYear

2015

fDate

7-10 March 2015

Firstpage

70

Lastpage

73

Abstract

The gas sensing characteristics of Cr_1-xFe_xNbO₄ (x = 0.0, 0.5, 1.0) towards different organic analytes and hydrogen were investigated at different operating temperatures. The slope of the retrace transient, a representative feature for desorption kinetics was considered for data exploration. 11 sensors with 12 samples were tested and the data obtained was processed using principal component analysis (PCA). The scores plot and loadings plot showed the possible differentiation of the cross sensitive analytes and redundancy of the sensor behaviour towards these analytes respectively.

Keywords

chromium compounds; gas sensors; hydrogen; iron compounds; organic compounds; principal component analysis; thin films; Cr_1-xFe_xNbO₄; H₂; conductometric thick films; cross sensitive analytes; desorption kinetics; gas sensors; organic analytes; principal component analysis; retrace transient; sensor behaviour redundancy; Chemical sensors; Principal component analysis; Sensor arrays; Temperature sensors; Thick films; Gas sensor; Principal Component Analysis; n — type and p — type response; sensor array;

fLanguage

English

Publisher

ieee

Conference_Titel

Physics and Technology of Sensors (ISPTS), 2015 2nd International Symposium on

Conference_Location

Pune

Type

conf

DOI

10.1109/ISPTS.2015.7220085

Filename

7220085